DX - AHR InternationalII Formula Symbols and Designations Formula Symbol Unit Designation aB-Bearing...

DXMarginally lubricated

Designer´s Handbook

GLACIER GARLOCKBEARINGS

QualityAll the products described in this handbook are manufactured under DIN ISO 9001/2 or QS 9000 approved qualitymanagement systems.

© by GLACIER GARLOCK BEARINGS

II

Formula Symbols and Designations

FormulaSymbol Unit Designation

aB - Bearing size factor

aE - High load factor

aQ - Speed/Load factor

aS - Surface finish factor

aT - Temperature application factor

B mm Nominal bush width

C 1/min Dynamic load frequency

CD mm Installed diametral clearance

CDm mm Diametral clearance machined

CT - Total number of dynamic load cycles

Ci mm ID chamfer length

Co mm OD chamfer length

DH mm Housing Diameter

Di mm Nominal bush/thrust washer ID

Di,a mm Bush ID when assembled in housing

Di,a,m mm Bush ID assembled and machined

DJ mm Shaft diameter

Do mm Nominal bush/thrust washer OD

dD mm Dowel hole diameter

dL mm Oil hole diameter

dP mm Pitch circle diameter for dowel hole

F N Bearing load

Fi N Insertion force

f - friction

L mm Strip length

LH h Bearing service life

LRG h Relubrication interval

N 1/min Rotational speed

Nosz 1/min Oscillating movement frequency

p N/mm2 Specific load

plim N/mm2 Specific load limit

psta,max N/mm2 Maximum static load

pdyn,max N/mm2 Maximum dynamic load

Q - Total number of cycles

R - Number of lubrication intervals

Ra µm Surface roughness (DIN 4768, ISO/DIN 4287/1)

S3 mm Bush wall thickness

SS mm Strip thickness

ST mm Thrust washer thickness

T °C Temperature

Ta mm Depth of Housing Recess

Tamb °C Ambient temperature

Tmax °C Maximum temperature

Tmin °C Minimum temperature

U m/s Sliding speed

u - speed factor

W mm Strip width

Wu mm Maximum usable strip width

α1 1/106K Coefficient of linear thermal expansion parallel to surface

α2 1/106K Coefficient of linear thermal expansion normal to surface

σc N/mm2 Compressive Yield strength

λ W/mK Thermal conductivity

ϕ ° Angular displacement

η Ns/mm2 Dynamic Viscosity

ZT - Total number of osscillating movements

FormulaSymbol Unit Designation

Content

3

ContentQuality . . . . . . . . . . . . . . . . . . . . . IFormula Symbols andDesignations . . . . . . . . . . . . . . . . II

1 Introduction . . . . . . . . . . . 41.1 Characteristics and Advantages 4

2 Structure . . . . . . . . . . . . . 52.1 Basic Forms . . . . . . . . . . . . . . . . 5

3 Properties . . . . . . . . . . . . . 63.1 Physical Properties . . . . . . . . . . 63.2 Chemical Properties . . . . . . . . . 6

4 Lubrication . . . . . . . . . . . . 74.1 Choice of Lubricant . . . . . . . . . . 74.2 Friction . . . . . . . . . . . . . . . . . . . . 94.3 Lubricated Environments . . . . . 9

Lubrication . . . . . . . . . . . . . . . . . . 94.4 Characteristics of Fluid

Lubricated DX Bearings . . . . . 104.5 Design Guidance for Fluid

Lubricated Applications . . . . . 104.6 Wear Rate and Relubrication

Intervals with Greaselubrication . . . . . . . . . . . . . . . . 12Fretting Wear . . . . . . . . . . . . . . . 12

5 Design Factors . . . . . . . 135.1 Specific Load . . . . . . . . . . . . . . 13

Specific Load Limit . . . . . . . . . . . 135.2 Sliding Speed . . . . . . . . . . . . . . 14

Continuous Rotation . . . . . . . . . 14Oscillating Movement . . . . . . . . 14

5.3 pU Factor . . . . . . . . . . . . . . . . . 155.4 Load . . . . . . . . . . . . . . . . . . . . . 15

Type of Load . . . . . . . . . . . . . . . 155.5 Temperature . . . . . . . . . . . . . . . 175.6 Mating Surface . . . . . . . . . . . . . 175.7 Bearing Size . . . . . . . . . . . . . . . 185.8 Estimation of Bearing Service

Life with Grease Lubrication . 18Calculation Parameters . . . . . . . 18Estimate Bearing Life . . . . . . . . . 19Estimate Re-greasing Interval . . 19Oscillating Motion . . . . . . . . . . . 19Dynamic Loads . . . . . . . . . . . . . 19

5.9 Worked Examples . . . . . . . . . . 20

6 Data Sheet . . . . . . . . . . . 216.1 Data for bearing design

calculations . . . . . . . . . . . . . . . 21

7 Bearing Assembly . . . . . 227.1 Dimensions and Tolerances . . 227.2 Tolerances for minimum

clearance . . . . . . . . . . . . . . . . . . 22Grease lubrication . . . . . . . . . . . 22Fluid Lubrication . . . . . . . . . . . . . 24Allowance for ThermalExpansion . . . . . . . . . . . . . . . . . 24

7.3 Counterface Design . . . . . . . . . 257.4 Installation . . . . . . . . . . . . . . . . 26

Fitting of Bushes . . . . . . . . . . . . 26Insertion Forces . . . . . . . . . . . . . 26Alignment . . . . . . . . . . . . . . . . . . 27Sealing . . . . . . . . . . . . . . . . . . . . 27Axial Location . . . . . . . . . . . . . . . 27Fitting of Thrust Washers . . . . . . 27Slideways . . . . . . . . . . . . . . . . . . 28

8 Machining . . . . . . . . . . . 298.1 Machining Practice . . . . . . . . . 298.2 Boring . . . . . . . . . . . . . . . . . . . . 298.3 Reaming . . . . . . . . . . . . . . . . . . 308.4 Broaching . . . . . . . . . . . . . . . . . 308.5 Vibrobroaching . . . . . . . . . . . . . 318.6 Modification of components . . 318.7 Drilling Oil Holes . . . . . . . . . . . 318.8 Cutting Strip Material . . . . . . . . 31

9 Electroplating . . . . . . . . 32DX Components . . . . . . . . . . . . . 32Mating Surfaces . . . . . . . . . . . . . 32

10 Standard Products . . . . 3310.1 PM-DX cylindrical bushes . . . . 3310.2 MB-DX cylindrical bushes . . . . 4010.3 Inch DX cylindrical bushes . . . 4510.4 DX Thrust Washers - metric . . 4810.5 DX Thrust Washers - inch . . . . 4910.6 DX Strip - metric . . . . . . . . . . . . 5010.7 DX Strip - inch . . . . . . . . . . . . . 50

1 IntroductionGLACIER GARLOCK BEARINGS

4

1 IntroductionThe purpose of this handbook is to providecomprehensive technical information onthe characteristics of DX bearings. Theinformation given, permits designers toestablish the correct size of bearing requi-red and the expected life and performance.Glacier Garlock Bearings Research andDevelopment services are available toassist with unusual design problems.

Complete information on the range of DXstandard stock products is given togetherwith details of other DX products.Glacier Garlock Bearings is continuallyrefining and extending its experimental andtheoretical knowledge and, therefore,when using this brochure it is alwaysworthwhile to contact the Company shouldadditional information be required. Customers are advised to carry out proto-type testing wherever possible.

1.1 Characteristics and Advantages DX provides maintenance free opera-

tion DX has a high pU capability DX exhibits low wear rate Seizure resistant Suitable for temperatures from -40 to

+120 °C High static and dynamic load capacity

Good frictional properties No water absorption and therefore

dimensionally stable Compact and light Suitable for rotating, oscillating, reci-

procating and sliding movements DX bearings are prefinished and

require no machining after assembly

2 StructureDX is a composite bearing materialdeveloped specifically to operate with mar-ginal lubrication and consists of three bon-ded layers: a steel backing strip and asintered porous bronze matrix, impregna-ted and overlaid with a pigmented acetalcopolymer bearing material.The steel backing provides mechanicalstrength and the bronze interlayer providesa strong mechanical bond for the lining.This construction promotes dimensionalstability and improves thermal conductivity,thus reducing the temperature at the bea-ring surface. DX is designed for use with grease lubrica-tion and the bearing surface is normally

provided with a uniform pattern of indentsThese serve as a reservoir for the greaseand are designed to provide the optimumdistribution of the lubricant over the bea-ring surface.

Fig. 1: DX-microsection

2Structure

5

2.1 Basic FormsStandard Components available from stockThese products are manufactured to Inter-national, National or Glacier Garlock Bea-rings standard designs.

Metric and Imperial Sizes Cylindrical Bushes

- PM pre finished metric range, not machinable in situ, for use with stan-dard journals finished to h6-h8 limits.

- MB machinable metric range, with an allowance for machining in situ.

- Machinable inch range for use as sup-plied or after machining in situ.

Thrust Washers Strip Material

Fig. 2: Standard components

Non Standard Components not available from stockThese products are manufactured tocustomers requirements with or withoutGlacier Garlock Bearings recommendati-ons, and include for example

Modified Standard Components Half Bearings Flat Components Pressings Stampings

Fig. 3: Non standard components

3 PropertiesGLACIER GARLOCK BEARINGS

6

3 Properties3.1 Physical Properties

Table 1: Properties of DX

3.2 Chemical PropertiesThe following table provides an indicationof the resistance of DX to various chemicalmedia. It is recommended that

the chemical resistance is confirmed bytesting if possiple.

Table 2: Chemical resistance of DX

Characteristic Symbol Value DX Unit CommentsPhysical Properties

Thermal Conductivity λ 52 W/mKCoefficient of linear thermal expansion :

parallel to surface α1 11 1/106K

normal to surface α2 29 1/106KMaximum Operating Temperature Tmax 120 °CMinimum Operating Temperature Tmin 40 °C

MechanicalProperties Compressive Yield Strength σc 380 N/mm

2 measured on disc 5 mm diame-ter x 2.45 mm thick.

Maximum Load

Static psta,max 140 N/mm2

Dynamic pdyn,max 140 N/mm2

Electrical Properties Volume resistivity of acetal lining 10

15 Ωcm

Chemical % °C RatingStrong Acids Hydrochloric Acid 5 20 -

Nitric Acid 5 20 -Sulphuric Acid 5 20 -

Weak Acids Acetic Acid 5 20 -Formic Acid 5 20 -

Bases Ammonia 10 20 oSodium Hydroxide 5 20 o

Solvents Acetone 20 +Carbon Tetrachloride 20 +

Lubricants and fuels Paraffin 20 +Gasolene 20 +Kerosene 20 +Diesel fuel 20 +Mineral Oil 70 oHFA-ISO46 High Water fluid 70 oHFC-Water-Glycol 70 oHFD-Phosphate Ester 70 +Water 20 oSea Water 20 -

+Satisfactory: Corrosion damage is unlikely to occur.

o

Acceptable: Some corrosion damage may occur but this will not be suf-ficient to impair either the structural integrity or the tribo-logical performance of the material.

-

Unsatisfactory: Corrosion damage will occur and is likely to affect either the structural integrity and/or the tribological performance of the material.

4Lubrication

7

4 Lubrication4.1 Choice of LubricantDX must be lubricated, the choice of lubri-cant depending upon pU and sliding speedand the stability of the lubricant under theoperating conditions.

Table 3: Performance of greases

+ Recommendedo Satisfactory- Not recommended

NA Data not available

Manufacturer Grade Type RatingBP Energrease LS2 Mineral Lithium Soap +

Energrease LT2 Mineral Lithium Soap +Energrease FGL Mineral Non Soap oEnergrease GSF Synthetic NA o

Century Lacerta ASD Mineral Lithium/Polymer oLacerta CL2X Mineral Calcium -

Dow Corning Molykote 55M Silicone Lithium Soap oMolykote PG65 PAO Lithium Soap +Molykote PG75 Synthetic/Mineral Lithium Soap +Molykote PG602 Mineral Lithium Soap o

Elf Rolexa.1 Mineral Lithium Soap +Rolexa.2 Mineral Lithium Soap oEpexelf.2 Mineral Lithium/Calcium Soap o

Esso Andok C Mineral Sodium Soap oAndok 260 Mineral Sodium Soap oCazar K Mineral Calcium Soap -

Mobil Mobilplex 47 Mineral Calcium Soap oMobiltemp 1 Mineral Non Soap +

Rocol BG622 White Mineral Calcium Soap oSapphire Mineral Lithium Complex oWhite Food Grease White Oil Clay -

Shell Albida R2 Mineral Lithium Complex +Axinus S2 Mineral Lithium oDarina R2 Mineral Inorganic Non Soap +Stamina U2 Mineral Polyurea oTivela A Synthetic NA +

Sovereign Omega 77 Mineral Lithium oOmega 85 Mineral Polyurea -

Tom Pac Tom Pac NA NA oTotal Aerogrease Synthetic NA +

Multis EP2 NA Lithium -

4 LubricationGLACIER GARLOCK BEARINGS

8

GreaseThis is the recommended method of lubri-cation. The performance ratings of diffe-rent types of grease are indicated in Table3. For environmental temperatures above50°C the grease should contain an

anti-oxidant additive. Greases containingEP additives or significant additions of gra-phite or MoS2 are not generally recom-mended for use with DX.

OilDX is not generally suitable for use withhydrocarbon oils operating above 115 °C.At these temperatures oxidation of the oilmay produce a low concentration of labileresidues, acid or free radical, which willcause depolymerisation of the DX acetalcopolymer bearing lining.

Such oxidation can also occur after prolon-ged periods at lower temperatures. Inpractice, this means that DX is not recom-mended for use with recirculating oilsystems or bath systems where sump tem-perature of 70 °C or greater are possible.

Non lubricating fluidsCare must be taken when using DX withnon lubricating fluids as indicated below.

WaterDX is only suitable for operation in waterwhen the load and speed permit full hydro-

dynamic conditions to be established (seeFig. 7).

Water-Oil EmulsionDX is suitable for use with 95/5 water/oilemulsions, however initial operation with

pure oil or grease is recommended beforetransferring to emulsion.

Shock-Absorber OilsDX is not compatible with shock-absorberoils at operating temperature.

PetrolWith petrol as a lubricant at a pU factor of0.21 N/mm2 x m/s the wear rate of DX hasbeen found to be about 4-5 times greater

than that of an initially greased bearingunder the same pU conditions.

Kerosene and PolybuteneThe wear rate of DX with these fluids hasbeen found to be equivalent to that obtai-ned with a light hydrocarbon oil.

Other FluidsPolyester, polyethylene glycol and polygly-col lubricants give similar wear rates withDX to light hydrocarbon oil. With the glycolfluids however the operating temperaturemust not exceed 80°C because of the pos-sibility of attack of the acetal lining of DXby these fluids.In general, the fluid will be acceptable if itdoes not chemically attack the acetal liningor the porous bronze interlayer. Chemicalresistance data are given in Table 2.Where there is doubt about the suitabilityof a fluid, a simple test is to submerge a

sample of DX material in the fluid for two tothree weeks at 15-20°C above the opera-ting temperature. The following will usuallyindicate that the fluid is not suitable for usewith DX. A significant change in the thickness of

the DX material, A visible change in the bearing surface

from polished to matt. A visible change in the microstructure of

the bronze interlayer

4Lubrication

9

4.2 FrictionLubricated DX bearings show negligiblestick-slip and provide smooth sliding bet-ween adjacent surfaces. The coefficient offriction of lubricated DX depends upon the

actual operating condi-tions as indicated insection 4.3. Where frictional characteristicsare critical to a design they should be esta-blished by prototype testing.

4.3 Lubricated EnvironmentsThe following sections describe the basicsof lubrication and provide guidance on theapplication of DX in such environments.

Lubrication There are three modes of lubricated bea-ring operation which relate to the thicknessof the developed lubricant film between thebearing and the mating surface.

These three modes of operation dependupon: Bearing dimensions Clearance Load and Speed Lubricant Viscosity and Flow

Hydrodynamic lubrication Characterised by: Complete separation of the shaft from

the bearing by the lubricant film Very low friction and no wear of the bea-

ring or shaft since there is no contact Coefficients of friction of 0.001 to 0.01

Fig. 4: Hydrodynamic lubrication

Hydrodynamic conditions occur when

Mixed film lubricationCharacterised by: Combination of hydrodynamic and

boundary lubrication. Part of the load is carried by localised

areas of self pressurised lubricant andthe remainder supported by boundarylubrication.

Friction and wear depend upon thedegree of hydrodynamic supportdeveloped.

DX provides low friction and high wearresistance to support the boundary lubri-cated element of the load.

Fig. 5: Mixed film lubrication

pU η⋅7 5,------------ B

Di-----⋅≤

(4.3.1) [N/mm²]


10

Boundary lubrication Characterised by: Rubbing of the shaft against the bearing

with virtually no lubricant separating thetwo surfaces.

Bearing material selection is critical toperformance.

Shaft wear is likely due to contact bet-ween bearing and shaft.

The excellent properties of DX materialminimises wear under these conditions.

The dynamic coefficient of friction withDX is typically 0.02 to 0.1 under bound-ary lubrication conditions.

The static coefficient of friction with DX istypically 0.03 to 0.15 under boundarylubrication conditions.

Fig. 6: Boundary lubrication

4.4 Characteristics of Fluid Lubricated DX BearingsDX is particularly effective in the mostdemanding of lubricated applications

where full hydrodynamic operation cannotbe maintained, for example:

High load conditions In highly loaded applications operatingunder boundary or mixed film conditionsDX shows excellent wear resistance andlow friction.

Start up and shut down under load With insufficient speed to generate ahydrodynamic film the bearing will ope-rate under boundary or mixed film condi-tions.- DX minimises wear- DX requires less start up torque than

conventional metallic bearings.

Sparse lubrication Many applications require the bearing tooperate with less than the ideal lubricantsupply, typically with splash or mist lubri-cation only.DX requires significantly less lubricantthan conventional metallic bearings.

4.5 Design Guidance for Fluid Lubricated Applications

Fig. 7, Page 11 shows the three lubricationregimes discussed above plotted on a

graph of sliding speed vs the ratio of speci-fic load to lubricant viscosity.

In order to use Fig. 7 Using the formulae in Section 5

- Calculate the specific load p- Calculate the shaft surface speed(U)

Using the viscosity temperature relati-onships presented in Table 4.- Determine the viscosity in centipoise

of the lubricant.

Note:Viscosity is a function of operating tempe-rature. If the operating temperature of the

fluid is unknown, a provisional temperatureof 25 °C above ambient can be used.

4Lubrication

11

Area 1 of Fig. 7The bearing will operate with boundarylubrication.The pU factor will be the major determinantof bearing life.

DX bearing performance can be estimatedfrom the following:Calculate Effective pU Factor from Section5.8

Area 2 of Fig. 7The bearing will operate with mixed filmlubrication.pU factor is no longer a significant parame-ter in determining the bearing life.

DX bearing performance will depend uponthe nature of the fluid and the actual ser-vice conditions.

Area 3 of Fig. 7The bearing will operate with hydrodyna-mic lubrication. Bearing wear will be deter-mined only by the cleanliness of the lubri-

cant and the frequency of start up and shutdown.

Area 4 of Fig. 7 These are the most demanding opera-

ting conditions. The bearing is operated under either

high speed or high bearing load to visco-sity ratio, or a combination of both.

These conditions may cause

- excessive operating temperature- and/or high wear rate.

Bearing performance may be improved:- by use of unindented DX lining- by the addition of one or more grooves

to the bearing- by shaft surface finish < 0.05 [µm Ra].

Fig. 7: Design guide for lubricated application

LH2000epU

η----------- 0 5,------------------------- aQ aT aS⋅ ⋅ ⋅=

[h]LH

1000epU

η----------- ----------------- aQ aT aS⋅ ⋅ ⋅=

[h]LH

1000epU

η----------- 2-------------------- aQ aT aS⋅ ⋅ ⋅=

[h]If epU/η ≤ 0.2 then(4.5.1)

If 0.2 < epU/η ≤ 1.0 then(4.5.1)

If epU/η > 1.0 then(4.5.1)

epU see (5.8.2), Page 19

Spec

ific

bear

ing

load

p [N

/mm

²]

Journal surface speed U [m/s]

0.1

1.0

10

0.01 0.1 1.0 10

Increased clearances may be necessary

Detail bearing design may be necessary - consult the company

Area 1Effectively dry rubbing

Area 2Mixed film lubrication

Area 3Full hydrodynamic lubrication

Area 4

Visc

osity

η [c

P]

Conditions:

- Steady unidirectional loading- Continuous, non reversing shaft rotation- Sufficient clearance between shaft and bearing- Sufficient lubricant flow


12

Table 4: Viscosity data

4.6 Wear Rate and Relubrication Intervals with Grease lubrication

At specific bearing loads below 100 N/mm2a grease lubricated DX bearing shows onlysmall bedding-in wear of about 0.0025mm. This is followed by little wear duringthe early part of the bearing life until thelubricant becomes exhausted and thewear rate increases. If the bearing isregreased before the rate of wear starts toincrease rapidly the material will continueto function satisfactorily with little wear.Fig. 8 shows the typical wear pattern.

Under specific loads above 100 N/mm2 theinitial bedding-in wear is greater, typicallyabout 0.025 mm, followed by a decreasingwear rate until the bearing exhibits a simi-lar wear/life relationship to that shown inFig. 8.The useful life of the bearing is limited bywear in the loaded area. If this wearexceeds 0.15mm the grease capacity ofthe indents is reduced and more frequentregreasing of the bearing will be required.

Fretting WearOscillating movements of less than thedimensions of the indent pattern maycause localised wear of the mating surfaceafter prolonged usage. This will result inthe indent pattern becoming transferred

onto the mating surface in contact with theDX bearing and may also give rise to fret-ting corrosion damage. In this situationDSTM material should be considered as analternative to DX.

Fig. 8: Typical wear of DX

cPTemperature [°C] 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140LubricantISO VG 32 310 146 77 44 27 18 13 9.3 7.0 5.5 4.4 3.6 3.0 2.5 2.2ISO VG 46 570 247 121 67 40 25 17 12 9.0 6.9 5.4 4.4 3.6 3.0 2.6ISO VG 68 940 395 190 102 59 37 24 17 12 9.3 7.2 5.8 4.7 3.9 3.3ISO VG 100 2110 780 335 164 89 52 33 22 15 11.3 8.6 6.7 5.3 4.3 3.6ISO VG 150 3600 1290 540 255 134 77 48 31 21 15 11 8.8 7.0 5.6 4.6Diesel oil 4.6 4.0 3.4 3.0 2.6 2.3 2.0 1.7 1.4 1.1 0.95Petrol 0.6 0.56 0.52 0.48 0.44 0.40 0.36 0.33 0.31Kerosene 2.0 1.7 1.5 1.3 1.1 0.95 0.85 0.75 0.65 0.60 0.55Water 1.79 1.30 1.0 0.84 0.69 0.55 0.48 0.41 0.34 0.32 0.28

Rad

ial w

ear (

mm

)

Operating lifeB

0.05

0.10

B B

Recommended re-greasing interval

End of useful life of pre-lubricated bearing - A

Initial greasing only

Recom-mended re-greasing interval

Bearing continues with low rate of wear when regreased at intervals - B

5Design Factors

13

5 Design FactorsThe main parameters when determiningthe size or calculating the service life for aDX bearing are: Specific Load Limit plim [N/mm

2] pU Factor [N/mm2 x m/s]

Mating surface roughness Ra [µm] Mating surface material Temperature T [°C] Other environmental factors eg. housing

design, dirt, lubrication.

5.1 Specific LoadThe specific load p is defined as the wor-king load divided by the projected area ofthe bearing and is expressed in N/mm2.

Bushes Thrust Washers

Slide Plates

Specific Load LimitThe maximum load which can be appliedto a DX bearing can be expressed in termsof the Specific Load Limit, which dependson the type of the loading and lubrication Itis highest under steady loads. The valuesof Specific Load Limit specified in Table 5assume good alignment between the bea-ring and mating surface.

The Specific Load Limit for DX reduces forbearing operating temperatures in excessof 40 °C, falling to about half the valuesgiven in Table 5 for temperatures above100 °C.Conditions of dynamic load or oscillatingmovement which produce fatigue stress inthe bearing result in a reduction in the per-missible Specific Load Limit (Fig. 9, Page14).

Table 5: Specific load limit plim for DX

(5.1.1) [N/mm²]p F

Di B⋅--------------=

(5.1.2) [N/mm²]p 4F

π Do2Di2

( )⋅---------------------------------=

(5.1.3) [N/mm²]

p FL W⋅-------------=

Load Operating condition Lubrication plimSteady Intermittent or very slow (below

0.01 m/s) continuous rotation or oscillating motion

Grease or oil 140

Steady Continuous rotation or oscillating motion

Grease or oil (bound-ary lubrication) 70

Steady or dynamic Continuous rotation or oscillating motion

Oil (hydrodynamic lub-rication) 45

5 Design FactorsGLACIER GARLOCK BEARINGS

14

Fig. 9: DX specific load limits plim under dynamic loads or oscillating conditions

5.2 Sliding SpeedThe sliding speed U [m/s] is calculated asfollows:

Continuous RotationBushes Thrust Washers

Oscillating MovementBushes Thrust Washers

The maximum permissible effective pUfactor (epU factor) for grease lubricatedDX bearings is dependent upon the sliding

speed as shown in Fig. 11. For slidingspeeds in excess of 2.5 m/s continuous oillubrication is recommended.

Fig. 11: Maximum epU factor for grease lubrication

Spec

ific

load

lim

it p l

im [N

/mm

²]

Cycles Q1041

10

100

105 106 107 108

UDi π N⋅ ⋅

60 103⋅

----------------------=

(5.2.1) [N/mm²]

U

Do Di+

2------------------- π N⋅ ⋅

60 103⋅

------------------------------------=

(5.2.2) [N/mm²]

UDi π⋅

60 103⋅

--------------------4ϕ Nosz⋅360

------------------------⋅=

(5.2.3) [N/mm²]

U

Do Di+

2------------------- π⋅

60 103⋅

---------------------------4ϕ Nosz⋅360

------------------------⋅=

(5.2.4) [N/mm²]

Fig. 10: Oscillating cycle ϕ

ϕ ϕ

412 3

epU

Fac

tor [

N/m

m² x

m/s

]

Speed [m/s]

00.0

0.5

1.0

0.5 1.0 1.5 2.0 2.5

2.0

1.5

2.5

3.0

5Design Factors

15

5.3 pU FactorThe useful operating life of a DX bearing isgoverned by the pU factor, which is calcu-lated as follows:

5.4 LoadIn addition to its contribution to the pU fac-tor the type and direction of the appliedload also affects the performance of a DXbearing. This is accomodated in the calcu-

lation of the bearing service life by thespeed/load application factor aQ shown inFigs. 15-17.

Type of Load

Fig. 12: Steady load, vertically down-wards, bush stationary, shaft rotating. Lubricant drains to loaded area

Fig. 13: Steady load, vertically upwards, bush stationary, shaft rotating. Lubricant drains away from loaded area

Fig. 14: Rotating load, shaft stationary, bush rotating

pU p U⋅=

(5.3.1) [N/mm² x m/s]

F2---

F2---

F

F2---

F2---

F

F2---

F2---

F


16

Fig. 15: Speed/Load factor aQ for MB range bushes - unmachined

Fig. 16: Speed/Load factor aQ for PM range and MB range bushes - machined

Fig. 17: Speed/Load factor aQ for thrust washers

Note: aQ = 1 for slideways

Rubbing speed U [m/s]0

0.0

0.5

1.0

0.5 1.0 1.5 2.0 2.5

2.0

1.5

2.5

3.0

Rotating load

Steady load verticallydownwardsDynamic load or steady loadnot downwards

Spee

d/Lo

ad fa

ctor

aQ

Rubbing speed U [m/s]

00.0

0.5

1.0

0.5 1.0 1.5 2.0 2.5

2.0

1.5

2.5

3.0

Rotating load

Steady load verticallydownwardsDynamic load or steady loadnot downwards

Spee

d/Lo

ad fa

ctor

aQ


00.0

0.5

1.0

0.5 1.0 1.5 2.0 2.5

2.0

1.5

2.5

3.0

Spee

d/Lo

ad fa

ctor

aQ

5Design Factors

17

5.5 TemperatureThe useful life of a DX bearing dependsupon the operating temperature. The per-formance of grease lubricated DX decrea-ses at bearing temperatures above 40°C.This loss of performance is related to bothmaterial and lubricant effects.For a given pU Factor the operating tem-perature of the bearing depends upon the

temperature of the surrounding environ-ment and the heat dissipation properties ofthe housing.In calculating the service life of DX theseeffects are accomodated by the applicationfactor aT shown in Fig. 18.

Fig. 18: DX application factor aT

5.6 Mating SurfaceThe wear rate of DX is strongly dependentupon the roughness of the mating counter-face. For optimum bearing performancethe mating surface should be

ground to better than 0.4 µm Ra. Thiseffect is accomodated by the mating sur-face finish application factor aS shown inFig. 19.

Fig. 19: DX application factor aS

Bearing environment temperature Tamb [°C]

00

0.2

0.4

10 20 30 40 50

0.8

0.6

1

Housings offering average to good heat dissipation

Housings made of light metal pressings

Non-metallic housings

60 70 80 90 100

Appl

icat

ion

fact

or a

T

Mating surface finish Ra [µm]

00

0.2

0.4

0.25 0.50

0.8

0.6

1

0.75 1.00 1.25

Appl

icat

ion

fact

or a

S


18

5.7 Bearing SizeFrictional heat generated at the bearingsurface and dissipated through the shaftand housing depends both on the opera-ting conditions (i.e. pU factor) and the bea-ring size.

For a give pU condition a large bearing willrun hotter than a smaller bearing. The bea-ring size factor aB shown in Fig. 20 takesaccount of this effect.

Fig. 20: Bearing size factor aBNote: aB = 1 for slideways

5.8 Estimation of Bearing Service Life with Grease Lubrication

Calculation Parameters

Operating Conditions

Bear

ing

size

fact

ora B

Journal diameter DJ [mm]

80.1

0.2

0.3

9 10

0.40.5

0.80.60.70.91.0

1.5

3.0

2.0

15 20 30 40 50 70 100 150 200 500

Bushes Thrust Washers Slide Plates Unit

Bearing diameter DiBearing outside dia-meter

Do Strip Length L [mm]

Bearing width B Bearing insidediameterDi Strip Width W [mm]

Load F [N]Rotational Speed (Continuous) N [1/min]

Oscillating Frequency Nosz [1/min]

Angular movement about mean position ϕ [°]Specific Load Limit see Table 5, Page 13 [N/mm2]Application Factor aQ see Fig. 15-17, Page 16 [−]Application Factor aT see Fig. 18, Page 17 [−]Application Factor aS see Fig. 19, Page 17 [−]Bearing Size Factor aB see Fig. 20, Page 18 [−]

5Design Factors

19

Calculate p from the equations in 5.1 on Page 13. Calculate U from the equations in 5.2 on Page 14.Calculate pU from the equation in 5.3 on Page 15.

Calculate High Load Factor aE

Note:If aE> 10000, or aE < 0, the bearing is over-loaded.

Calculate Effective pU Factor epU

Note:Check that epU is less than limit set inFig. 11 for the sliding speed U. If NOT,

increase the bearing length or use conti-nuous lubrication.

Estimate Bearing LifeIf epU < 1.0 then If epU > 1.0 then

Estimate Re-greasing Interval

Oscillating MotionCalculate number of cycles

Dynamic LoadsCalculate number of cycles

where R = Number of times bearing isregreased during total life required.

Check that ZT (or CT) is less than the totalnumber of cycles Q given in Fig. 9 foractual bearing specific load p.If ZT (or CT) > Q then life will be limited byfatigue after Q cycles.If ZT (or CT) < Q then life will be limited bywear after ZT cycles.If the estimated life or total cycles areinsufficient or the regreasing intervals aretoo frequent, increase the bearing lengthor diameter, or consider drip feed or conti-nuous oil lubrication, the quantity to beestablished by test.

aEplim

plim p-------------------=

(5.8.1) []

plim see Table 5, Page 13

epUaE pU⋅aB

-------------------=

(5.8.2) []

LH3000epU------------- aQ aT aS⋅ ⋅ ⋅=

(5.8.3) [h]LH

3000

epU( )2 4,------------------------ aQ aT aS⋅ ⋅ ⋅=

(5.8.4) [h]

LRGLH2-------=

(5.8.5) [h]

ZT LRG Nosz 60 R 2+( )⋅⋅ ⋅=

(5.8.6) []

CT LRG C 60 R 2+( )⋅⋅ ⋅=

(5.8.7) []


20

5.9 Worked Examples

PM cylindrical BushGiven:Load Details Steady Load Inside Diameter Di 40 mm

Direction: down Length B 30 mmShaft Steel Bearing Load F 15000 N

ambient Temperature Rotational Speed N 30 1/mingood heat conditions Ra 0.3 µm

Calculation Constants and Application FactorsSpecific Load Limit plim 70 N/mm²

(Table 5, Page 13)Application Factor aT 1.0 (Fig. 18, Page 17)Mating Surface Application Factor aS 0.98 (Fig. 19, Page 17)Bearing Size Factor aB for ø 40 0.98 (Fig. 20, Page 18)Application Factor for PM bush aQ 1.8 (Fig. 16, Page 16)

Calculation Ref ValueSpecific Load p [N/mm²]

(5.1.1), Page 13

Sliding Speed U [m/s]

(5.2.1), Page 14

High Load FactoraE [-] (must be >0)

(5.8.1), Page 19

epU Factor[-]

(5.8.3), Page 19

LifeLH [h] for epU0)

(5.8.1), Page 19

epU Factor[-]

(5.8.3), Page 19

LifeLH [h] for epU>1

(5.8.3), Page 19

LRG [h](5.8.3), Page 19

p FDi B⋅------------- 45000

90 60⋅----------------- 8 33,= = = .

UDi π N⋅ ⋅

60 103⋅---------------------- 90 π 20⋅ ⋅

60000------------------------- 0 094,= = =

aEplim

plim p------------------ 46 7,

46 7, 8 33,-------------------------------- 1 22,= = =

epUaE pU⋅aB

------------------ 1 22, 8 33, 0 094,⋅ ⋅0 70,

--------------------------------------------------- 1 36,== =

LH3000

epU( )2 4,----------------------- aQ aT aS⋅ ⋅ ⋅

3000

1 36, 2 4,------------------- 1⋅ 0, 0 4, 0 98,⋅ ⋅ 562= = =.. 562

LRGLH2------ 562

2----------== = 281

Thrust washerGiven:Load Details Steady Load Inside Diameter Di 26 mm

Direction: down Outside Diameter Do 44 mmShaft Steel Bearing Load F 10000 N

ambient Temperature Rotational Speed N 10 1/mingood heat conditions Ra 0.3 µm

Calculation Constants and Application FactorsSpecific Load Limit plim 70 N/mm² (Table 5, Page 13)Application Factor aT 1.0 (Fig. 18, Page 17)Mating Surface Application Factor aS 0.98 (Fig. 19, Page 17)Bearing Size Factor aB for ø 35 0.90 (Fig. 20, Page 18)Application Factor for Thrust washers aQ 1.0 (Fig. 16, Page 16)

Calculation Ref ValueSpecific Load p [N/mm²]

(5.1.2), Page 13

Sliding Speed U [m/s]

(5.2.2), Page 14

High Load FactoraE [-](must be >0)

(5.8.1), Page 19

epU Factor[-]

(5.8.2), Page 19

LifeLH [h] for epU0)

(5.8.1), Page 19

epU Factor[-]

(5.8.2), Page 19

LifeLH [h] for epU

6Data Sheet

21

6 Data Sheet6.1 Data for bearing design calculations

Application:

Quantity

Dimensions in mm

Inside Diameter Di

Width B

Outside Diameter Do

Length of slideplate LWidth of slideplate WThickness of slideplate SS

Radial load F [N]

or specific load p [N/mm2]

Axial load F [N]

or specific load p [N/mm2]

Oscillating frequency Nosz [1/min]

Rotational speed N [1/min]Speed U [m/s]Length of Stroke LS [mm]Frequency of Stroke [1/min]Oscillating cycle ϕ [°]

Continuous operation

Load

Service hours per day

Days per yearOperating timeIntermittent operation

Movement

Shaft DJBearing Housing DH

Fits and Tolerances

Ambient temperature Tamb [°]

Operating Environment

Non metal housing with poor heat transfer properties

Light pressing or insulated housing with poor heat transfer properties

Housing with good heat transfer pro-perties

Material

Mating surface

Surface finish Ra [µm]Hardness HB/HRC

Process FluidLubricant

Alternate operation in water and dry

Dry

Lubrication

Process fluid lubrication

Continuous lubrication

Initial lubrication only

Hydrodynamic conditions

Dynamic viscosity η

Required service life LH [h]

Service life

Rotational movement Steady load Rotating load Oscillating movement

Cylindrical Bush Thrust Washer Slideplate

Existing Design New Design

Special (Sketch)

Linear movement

B

Di

Do

Di Do

WS S

ST

L

Customer DataCompany:Street:

Project:Name:Tel.:

Date:Signature:Fax:

City:Post Code:

7 Bearing Assembly

GLACIER GARLOCK BEARINGS

22

7 Bearing Assembly7.1 Dimensions and TolerancesFor optimum performance it is essentialthat the correct running clearance is usedand that both the diameter of the shaft andthe bore of the housing are finished to thelimits given in the tables.If the bearing housing is unusually flexiblethe bush will not close in by the calculated

amount and the running clearance will bemore than the optimum. In these circum-stances the housing should be boredslightly undersize or the journal diameterincreased, the correct size being determi-ned by experiment.

7.2 Tolerances for minimum clearance

Grease lubricationThe minimum clearance required for satis-factory performance of DX depends uponthe pU factor, the sliding speed and theenvironmental temperature, any one orcombination of which may reduce the dia-metral clearance in operation due toinward thermal expansion of the DX poly-mer lining. It is therefore necessary tocompensate for this.Fig. 21 shows the minimum diametral clea-rance plotted stepped against journal dia-meter at an ambient 20°C. Where thestepped lines show a change of clearancefor a given journal diameter, the lowervalue is used. The superimposed straight lines indicatethe minimum permissible diametral clear-

ance for various values of pUu (Fig. 21),where pU is calculated as in 5.3 on Page15, and u is a sliding speed factor forspeeds in excess of 0.5 m/s given inFig. 22.If the clearance indicated for a pUu factorlies below the stepped lines the recom-mended standard shaft may be used. Ifabove, the shaft size must be reduced toobtain the clearance indicated on the verti-cal axis of the relevant figure.Under slow speed and high load conditionsit may be possible to achieve satisfactoryperformance with diametral clearancesless than those indicated. But adequateprototype testing is recommended in suchcases.

7Bearing Assembly

23

Fig. 21: Minimum clearance for PM prefinished and MB machinable metric range machined to H7 bore

Fig. 22: Rubbing speed factor u

Rec

omm

ende

d m

inim

um d

iam

etra

l cle

aran

ce C

D [m

m]

Journal diameter DJ [mm]

100.01

0.02

0.03

20 30 40 50 60 80 10070 90

0.04

0.05

0.06

0.08

0.1

0.15

0.2

PM range Use standard clearan-ces unless fine running required

Increase stan-dard clearances to level indicated by pUu line

MB range

2.8 N/m

m² x m

/s

1.0

0.5

0.35

0.25

0.15

0.10

pUu

Rub

bing

spe

ed fa

ctor

u


0.5

1

2

0 0.5 1

1.5

01.5 2 2.5

7 Bearing Assembly


24

Fluid LubricationThe minimum clearance required for jour-nal bearings operating under hydrodyna-mic or mixed film conditions for a range ofshaft rotational speeds and diameters is

shown in Fig. 23 It is recommended thatthe bearing performance under minimumclearance conditions be confirmed bytesting if possible.

Fig. 23: DX minimum clearances - bush diameters Di 10-50 mm

Allowance for Thermal ExpansionFor operation in high temperature environ-ments the clearance should be increasedby the amounts indicated by Fig. 24 to

compensate for the inward thermal expan-sion of the bearing lining.

Fig. 24: Recommended increase in diametral clearanceIf the housing is non-ferrous then the boreshould be reduced by the amounts given inTable 6, in order to give an increased inter-

ference fit to the bush, with a similar reduc-tion in the journal diameter additional tothat indicated by Fig. 24.

Dia

met

ral c

lear

ance

CD

[mm

]

Speed N [rev/min]

00.01

0.02

100

0.03

0.05

0.06

0.04

1000

Detail design required for rubbing speeds above 3 m/s

50 45 40 35 3025

20

15

18

12

10

Incr

ease

in m

inim

um d

iam

etra

l cle

aran

ce [m

m]

Environmental temperature Tamb [°C]

0.01

0.02

0 40 60 800

20 100 120 140 160

0.03

0.04

0.05

7Bearing Assembly

25

Table 6: Allowance for high temperature

7.3 Counterface DesignDX bearings may be used with all conven-tional mating surface materials. Hardeningof steel journals is not required unlessabrasive dirt is present or if the projectedbearing life is in excess of 2000 hours, inwhich cases a minimum shaft hardness of350HB is recommended.A ground surface finish of better than0.4µm Ra is recommended. The finaldirection of machining of the mating sur-face should preferably be the same as thedirection of motion relative to the bearingin service.DX is normally used in conjunction with fer-rous journals and thrust faces, but in dampor corrosive surroundings stainless steel or

hard chromium plated mild steel, alterna-tively WH shaft sleeves (Standard pro-gramm available) are recommended.When plated mating surfaces are specifiedthe plating should possess adequatestrength and adhesion, particularly if thebearing is to operate with high fluctuatingloads.The shaft or thrust collar used in con-junction with the DX bush or thrust washermust extend beyond the bearing surface inorder to avoid cutting into it. The matingsurface must also be free from grooves orflats, the end of the shaft should be given alead-in chamfer and all sharp edges orprojections which may damage the softpolymer lining of the DX must be removed.

Fig. 25: Counterface design

Housing material Reduction in housing diameter per 100°C riseReduction in shaft diameter

per 100°C riseAluminium alloys 0.1% 0.1% + values from Fig. 24Copper base alloys 0.05% 0.05% + values from Fig. 24Steel and cast iron Nil values from Fig. 24Zinc base alloys 0.15% 0.15% + values from Fig. 24

incorrect correct

7 Bearing Assembly


26

7.4 InstallationImportant NoteCare must be taken to ensure that the DXlining material is not damaged during theinstallation.

Fitting of BushesThe bush is inserted into its housing withthe aid of a stepped mandrel, preferablymade from case hardened mild steel, asshown in Fig. 26. The following should benoted to avoid damage to the bearing:

Housing diameter is as recommended 15-30° lead-in chamfer on housing edges of lead-in chamfer are deburred The bush must be square to the housing Light smear of oil on bush OD

Fig. 26: Fitting of bushes

Insertion ForcesFig. 27 gives an indication of the maximuminsertion force required to correctly install

standard DX bushes.

Fig. 27: Maximum insertion force Fi

Di 55 mm Di >120 mm

15°-30°

Mounting Ring

Note:Lightly oil back of bush to assist assembly.

for D

H ≤

125

= 0.

8fo

r DH

> 1

25 =

2

for D

H ≤

125

= 0.

8fo

r DH

> 1

25 =

2

DiDi

DHDH

Max

imum

inse

rtion

forc

e [N

/mm

uni

t len

gth]

Bush bore diameter Di [mm]

200

400

1000

0 30 40 50

800

0

20 100

600

10

7Bearing Assembly

27

AlignmentAccurate alignment is an important consi-deration for all bearing assemblies. WithDX bearings misalignment over the length

of a bush (or pair of bushes), or over thediameter of a thrust washer should notexceed 0.020 mm as illustrated in Fig. 28.

Fig. 28: Alignment

SealingWhile DX can tolerate the ingress of somecontaminant materials into the bearing wit-hout loss of performance, where there isthe possibility of highly abrasive material

entering the bearing, a suitable sealingarrangement, as illustrated in Fig. 29should be provided.

Fig. 29: Recommended sealing arrangements

Axial LocationWhere axial location is necessary, it isgenerally advisable to fit DX thrust was-hers in conjunction with DX bushes, evenwhen the axial loads are low. Experience

has shown that fretting debris from unsa-tisfactory locating surfaces can enter anadjacent DX bush and adversely affect thebearing life and performance.

Fitting of Thrust WashersDX thrust washers should be located onthe outside diameter in a recess as shownin Fig. 30. The inside diameter must beclear of the shaft in order to prevent con-tact with the steel backing of the DX mate-rial. The recess diameter should be 0.125mm larger than the washer diameter andthe depth as given in the product tables.

If there is no recess for the thrust washerone of the following methods of fixing maybe used: two dowel pins two screws adhesive

7 Bearing Assembly


28

Fig. 30: Installation of Thrust-Washer

Important Note Dowel pins should be recessed 0.25 mm

below the bearing surface Screws should be countersunk 0.25 mm

below the bearing surface DX must not be heated above 130 °C Contact adhesive manufacturers for gui-

dance on the selection of suitable adhe-sives

Protect the bearing surface to preventcontact with adhesive

Ensure the washer ID does not touch theshaft after assembly

Ensure that the washer is mounted withthe steel backing to the housing

SlidewaysDX strip material for use as slideway bea-rings should be installed using one of thefollowing methods:

countersunk screws adhesives mechanical location

Fig. 31: Mechanical location of DX slideways

8Machining

29

8 Machining8.1 Machining PracticeThe acetal copolymer lining of DX hasgood machining characteristics and can betreated as a free cutting brass in mostrespects. The indents in the bearing sur-face may lead to the formation of burrs orwhiskers due to the resilience of the liningmaterial, but this can be avoided by usingmachining methods which remove thelining as a ribbon, rather than a narrowthread.

When machining DX it is recommendedthat not more than 0.125 mm is removedfrom the lining thickness in order to ensurethat the lubricant capacity of the indentsremaining after machining is not signifi-cantly reduced.Boring, reaming and broaching are all sui-table machining methods for use with DX.The recommended tool material is highspeed steel or tungsten carbide.

8.2 BoringFig. 32 illustrates a recommended boringtool which should be mounted with its axisat right angles to the direction of feed.The essential characteristic required in theboring tool is a tip radius greater than 1.5mm, which combined with a side rake of30° will produce the ribbon effect required.Cutting speeds should be high, the opti-

mum between 2.0 and 4.5 m/s. The feedshould be low, in the range 0.05/0.025 mmfor cuts of 0.125 mm, the lower feedsbeing used with the higher cutting speeds.Satisfactory finishes can usually be obtai-ned machining dry and an air blast mayfacilitate swarfe removal. The use of coo-lant is not detrimental.

Fig. 32: Boring tool for DX

12°

setting flatCentre line through tip of tool to be on horizontal plane through centre of work piece

Section AA

20°A

30°Dia to suit holder

0.75 mm x 3°

2.5 mm rad

A

Tungsten carbide tip H or N wickmen or equivalent 1.5 mm thick

25°

0.75 mm x 3°

8 MachiningGLACIER GARLOCK BEARINGS

30

8.3 ReamingDX can be reamed satisfactorily by handwith a straight-fluted expanding reamer.For best results the reamer should besharp, the cut 0.025-0.050 mm and the

feed slow. Where hand reaming is notdesired machining speeds of about 0.05m/s are recommended with the cuts andfeeds as for boring.

8.4 BroachingFig. 33 shows broaches suitable for finis-hing bushes up to 65 mm diameter. The

broach should be used dry, at a speed of0.1-0.5 m/s.

Fig. 33: Suitable broaches for DXUse the single tooth version where thebush is less than 25 mm long, and thedouble tooth broach for longer bushes orfor two or more bushes together.If it is necessary to make up a special formof broach the following points should benoted:

Adequate provision should be made forlocating the bush by providing a pilot tosuit the bore of the bush when pressedhome. A rear support shoulder shouldlocate in the broached bore of the bushafter cutting. Alternatively, special guidesmay be provided external to the work-piece.

If two bushes are to be broached in line,

Bush Width PitchB P

Over To10 13 313 20 420 30 530 50 5.550 70 670 95 795 130 8

Diameter

Á´ Min. ass. bore+0.013+0

´B´ Nominal bore+0.038+0.025

Ć´ Nominal bore+0.015+0.005

Min. ass. bore = Do min - 2 x S3 maxNominal bore = min. finished bore

´B1´* Nominal bore-0.065-0.076

Min. length of Pilot Guide

LminSingle bush B + 62 or more

bushes in line B + 6 + bush spacing

5°

6 mm

3 mm rad polished1.5 mm rad

1.5 mm

2LL

Á´dia´B1´dia´B´dia´Ć´dia

C dia - 3 mm

0.75 mm x 45°1.5 mm rad

2LL

´B´diaĆ´dia Á´dia

Pitch P0.75 mm rad

1.5 mm

5°

45° 45°

2°

0.75 mm land

1.5 mm1.5 mm rad polished

Alternative - single tooth cutter

Detail of tooth form

Double tooth cutter

* First tooth of double tooth cutter

8Machining

31

then the pilot guide and rear supportshould be longer than the distancebetween the two bushes.

For large bushes it may be necessary toprovide axial relief along the length ofthe pilot guide and rear support, in orderto reduce the broaching forces.

Unless a guided broach is used, the tool

will follow the initial bore alignment of thebush, broaching cannot improve concen-tricity and parallelism unless externalguides are used.

In general owing to the variation in wallthickness of large diameter bushes, broa-ching is not suitable for finishing bores ofmore than 60 mm diameter unless externalguides are used.

8.5 VibrobroachingThis technique may also be used. A singlecutter is propelled with progressive recipro-cating motion with a vibration frequency oftypically 50 Hz. The cutter should have aprimary rake of 1.5° for 0.5 mm.

A cut of 0.25 mm on diameter may bemade at an average cutting speed of 0.15m/s to give a surface finish of better than0.8 µm Ra, which is acceptable.

8.6 Modification of componentsThe modification of DX bearing compon-ents requires no special procedures. Ingeneral it is more satisfactory to performmachining or drilling operations from thepolymer lining side in order to avoid burrs.When cutting is done from the

steel side, the minimum cutting pressureshould be used and care taken to ensurethat any steel or bronze particles protru-ding into the remaining bearing material,and all burrs, are removed.

8.7 Drilling Oil HolesBushes should be adequately supportedduring the drilling operation to ensure that

no distortion is caused by the drilling pres-sure.

8.8 Cutting Strip MaterialDX strip material may be cut to size by anyone of the following methods. Care mustbe taken to protect the bearing surfacefrom damage and to ensure that no defor-mation of the strip occurs.

Using side and face cutter, or slittingsaw, with the strip held flat and securelyon a horizontal milling machine.

Cropping Guillotine (For widths less than 90 mm

only) Water-jet cutting, Laser cutting

9 ElectroplatingGLACIER GARLOCK BEARINGS

32

9 ElectroplatingDX ComponentsTo provide corrosion protection the mildsteel backing of DX may be electroplatedwith most of the conventional electropla-ting metals including the following: zinc ISO 2081-2 cadmium ISO 2081-2 nickel ISO 1456-8 hard chromium ISO 1456-8

For the harder materials if the specifiedplating thickness exceeds approximately5 µm then the housing diameter should beincreased by twice the plating thickness inorder to maintain the correct assembledbearing bore size.Where electrolytic attack is possible testsshould be conducted to ensure that all thematerials in the bearing environment aremutually compatible.

Mating SurfacesDX can be used against hard chrome pla-ted materials and care should be taken toensure that the recommended shaft sizes

and surface finish are achieved after theplating process.

10Standard Products

33

10 Standard Products10.1PM-DX cylindrical bushes

3i i,

a

o

dL

i

o

0.3

min

.

Dimensions and tolerances follow ISO 3547 and GSP-Specifications

Detail Z

Split

Part No.

Nominalsize

WidthB

Wall thickness

S3

Shaft-øDJ [h8]

Housing-øDH [H7]

Bush i-ø Di,a

assembled in H7

housing

Clearance CD Oil hole -ø

dL

Di Domax.min.

max.min.

max.min.

max.min.

max.min.

max.min.

PM 0808 DX

8 10

8.257.75

0.9800.955

8.0007.978

10.01510.000

8.1058.040

0.1270.040 No holePM 0810 DX

10.259.75

PM 0812 DX 12.2511.75

PM 1010 DX

10 12

10.259.75

10.0009.978

12.01812.000

10.10810.040

0.1300.040

3

PM 1012 DX 12.2511.754PM 1015 DX 15.2514.75

PM 1020 DX 20.2519.75

PM 1210 DX

12 14

10.259.75

12.00011.973

14.01814.000

12.10812.040

0.1350.040

3

PM 1212 DX 12.2511.75

4

PM 1215 DX 15.2514.75

PM 1220 DX 20.2519.75

PM 1225 DX 25.2524.75

PM 1415 DX

14 16

15.2514.75

14.00013.973

16.01816.000

14.10814.040PM 1420 DX

20.2519.75

PM 1425 DX 25.2524.75

PM 1510 DX

15 17

10.259.75

15.00014.973

17.01817.000

15.10815.040

3

PM 1512 DX 12.2511.754PM 1515 DX 15.2514.75

PM 1525 DX 25.2524.75

All dimensions in mmS3 Co Ci

1 0.6 ± 0.4 0.1 to 0.5

1.5 0.6 ± 0.4 0.1 to 0.7

S3 Co Ci

2 1.2 ± 0.4 0.1 to 0.7

2.5 1.6 ± 0.8 0.2 to 1.0

ID and OD chamfers

10 Standard Products


34

PM 1615 DX

16 18

15.2514.75

0.9800.955

16.00015.973

18.01818.000

16.10816.040

0.1350.040

4

PM 1620 DX 20.2519.75

PM 1625 DX 25.2524.75

PM 1815 DX

18 20

15.2514.75

18.00017.973

20.02120.000

18.11118.040

0.1380.040PM 1820 DX

20.2519.75

PM 1825 DX 25.2524.75

PM 2010 DX

20 23

10.259.75

1.4751.445

20.00019.967

23.02123.000

20.13120.050

0.1640.050

PM 2015 DX 15.2514.75

PM 2020 DX 20.2519.75

PM 2025 DX 25.2524.75

PM 2030 DX 30.2529.75

PM 2215 DX

22 25

15.2514.75

22.00021.967

25.02125.000

22.13122.050

6

PM 2220 DX 20.2519.75

PM 2225 DX 25.2524.75

PM 2230 DX 30.2529.75

PM 2415 DX

24 27

15.2514.75

24.00023.967

27.02127.000

24.13124.050

PM 2420 DX 20.2519.75

PM 2425 DX 25.2524.75

PM 2430 DX 30.2529.75

PM 2515 DX

25 28

15.2514.75

25.00024.967

28.02128.000

25.13125.050

PM 2520 DX 20.2519.75

PM 2525 DX 25.2524.75

PM 2530 DX 30.2529.75

PM 2830 DX

28

31 30.2529.75

28.00027.967

31.02531.000

28.13528.050

0.1680.050

PM 2820 DX

32

20.2519.75

1.9701.935

32.02532.000

28.15528.060

0.1880.060

PM 2825 DX 25.2524.75

PM 2830 DX 30.2529.75

PM 3020 Dx

30 34

20.2519.75

30.00029.967

34.02534.000

30.15530.060PM 3030 DX

30.2529.75

PM 3040 DX 40.2539.75

Part No.

Nominalsize

WidthB

Wall thickness

S3

Shaft-øDJ [h8]

Housing-øDH [H7]

Bush i-ø Di,a

assembled in H7

housing


dL

Di Domax.min.

max.min.

max.min.

max.min.

max.min.

max.min.

10Standard Products

35

PM 3220 DX

32 36

20.2519.75

1.9701.935

32.00031.961

36.02536.000

32.15532.060

0.1940.060

6

PM 3230 DX 30.2529.75

PM 3235 DX 35.2534.75

PM 3240 DX 40.2539.75

PM 3520 DX

35 39

20.2519.75

35.00034.961

39.02539.000

35.15535.060

PM 3530 DX 30.2529.75

PM 3535 DX 35.2534.75

PM 3550 DX 50.2549.75

PM 3635 DX 36 40 35.2534.7536.00035.961

40.02540.000

36.15536.060

PM 3720 DX 37 41 20.2519.7537.00036.961

41.02541.000

37.15537.060

PM 4020 DX

40 44

20.2519.75

40.00039.961

44.02544.000

40.15540.060

8

PM 4030 DX 30.2529.75

PM 4040 DX 40.2539.75

PM 4050 DX 50.2549.75

PM 4520 DX

45 50

20.2519.75

2.4602.415

45.00044.961

50.02550.000

45.19545.080

0.2340.080

PM 4530 DX 30.2529.75

PM 4540 DX 40.2539.75

PM 4545 DX 45.2544.75

PM 4550 DX 50.2549.75

PM 5040 DX

50 55

40.2539.75

50.00049.961

55.03055.000

50.20050.080

0.2390.080PM 5050 DX

50.2549.75

PM 5060 DX 60.2559.75

PM 5520 DX

55 60

20.2519.75

55.00054.954

60.03060.000

55.20055.080

0.2460.080

PM 5525 DX 25.2524.75

PM 5530 DX 30.2529.75

PM 5540 DX 40.2539.75

PM 5550 DX 50.2549.75

PM 5560 DX 60.2559.75

PM 6030 DX

60 65

30.2529.75

60.00059.954

65.03065.000

60.20060.080

PM 6040 DX 40.2539.75

PM 6060 DX 60.2559.75

PM 6070 DX 70.2569.75

Part No.

Nominalsize

WidthB

Wall thickness

S3

Shaft-øDJ [h8]

Housing-øDH [H7]

Bush i-ø Di,a

assembled in H7

housing


dL

Di Domax.min.

max.min.

max.min.

max.min.

max.min.

max.min.



36

PM 6540 DX

65 70

40.2539.75

2.4502.384

65.00064.954

70.03070.000

65.26265.100

0.3080.100

8

PM 6550 DX 50.2549.75

PM 6560 DX 60.2559.75

PM 6570 DX 70.2569.75

PM 7040 DX

70 75

40.2539.75

70.00069.954

75.03075.000

70.26270.100

PM 7050 DX 50.2549.75

PM 7065 DX 65.2564.75

PM 7070 DX 70.2569.75

PM 7080 DX 80.2579.75

PM 7540 DX

75 80

40.2539.75

75.00074.954

80.03080.000

75.26275.100

9.5

PM 7560 DX 60.2559.75

PM 7580 DX 80.2579.75

PM 8040 DX

80 85

40.5039.50

80.00079.954

85.03585.000

80.26780.100

0.3130.100

PM 8060 DX 60.5059.50

PM 8080 DX 80.5079.50

PM 80100 DX 100.5099.50

PM 8530 DX

85 90

30.5029.50

85.00084.946

90.03590.000

85.26785.100

0.3210.100

PM 8540 DX 40.5039.50

PM 8560 DX 60.5059.50

PM 8580 DX 80.5079.50

PM 85100 DX 100.5099.50

PM 9040 DX

90 95

40.5039.50

90.00089.946

95.03595.000

90.26790.100

PM 9060 DX 60.5059.50

PM 9080 DX 80.5079.50

PM 9090 DX 90.5089.50

PM 90100 DX 100.5099.50

PM 9560 DX95 100

60.5059.50 95.000

94.946100.035100.000

95.26795.100PM 95100 DX 100.5099.50

Part No.

Nominalsize

WidthB

Wall thickness

S3

Shaft-øDJ [h8]

Housing-øDH [H7]

Bush i-ø Di,a

assembled in H7

housing


dL

Di Domax.min.

max.min.

max.min.

max.min.

max.min.

max.min.

10Standard Products

37

PM 10050 DX

100 105

50.5049.50

2.4502.384

100.00099.946

105.035105.000

100.267100.100

0.3210.100

9.5

PM 10060 DX 60.5059.50

PM 10080 DX 80.5079.50

PM 10095 DX 95.5094.50

PM 100115DX 115.50114.50

PM 10560 DX

105 110

60.5059.50

105.000104.946

110.035110.000

105.267105.100PM 105110 DX

110.50109.50

PM 105115 DX 115.50114.50

PM 11060 DX

110 115

60.5059.50

110.000109.946

115.035115.000

110.267105.100PM 110110 DX

110.50109.50

PM 110115 DX 115.50114.50

PM 11550 DX115 120

50.5049.50 115.000

114.946120.035120.000

115.267115.100PM 11570 DX 70.5069.95

PM 12060 DX

120 125

60.5059.50

120.000119.946

125.040125.000

120.272120.100

0.3260.100PM 120100 DX

100.5099.50

PM 120110 DX 110.50109.50

PM 12560 DX

125 130

60.5059.50

125.000124.937

130.040130.000

125.272125.100

0.3350.100PM 125100 DX

100.5099.50

PM 125110 DX 110.50109.50

PM 13050 DX

130 135

50.5049.50

2.4352.380

130.000129.937

135.040135.000

130.280130.130

0.3430.130 -

PM 13060 DX 60.5059.50

PM 13080 DX 80.5079.50

PM 130100 DX 100.5099.50

PM 13560 DX135 140

60.5059.50 135.000

134.937140.040140.000

135.280135.130PM 13580 DX 80.5079.50

PM 14050 DX

140 145

50.5049.50

140.000139.937

145.040145.000

140.280140.130

PM 14060 DX 60.5059.50

PM 14080 DX 80.5079.50

PM 140100 DX 100.5099.50

PM 15050 DX

150 155

50.5049.50

150.000149.937

155.040155.000

150.280150.130

PM 15060 DX 60.5059.50

PM 15080 DX 80.5079.50

PM 150100 DX 100.5099.50

Part No.

Nominalsize

WidthB

Wall thickness

S3

Shaft-øDJ [h8]

Housing-øDH [H7]

Bush i-ø Di,a

assembled in H7

housing


dL

Di Domax.min.

max.min.

max.min.

max.min.

max.min.

max.min.



38

PM 16050 DX

160 165

50.5049.50

2.4352.380

160.000159.937

165.040165.000

160.280160.130

0.3430.130

-

PM 16060 DX 60.5059.50

PM16080 DX 80.5079.50

PM 160100 DX 100.5099.50

PM 17050 DX

170 175

50.5049.50

170.000169.937

175.040175.000

170.280170.130

PM 17060 DX 60.5059.50

PM 17080 DX 80.5079.50

PM 170100 DX 100.5099.50

PM 18050 DX

180 185

50.5049.50

180.000179.937

185.046185.000

180.286180.130

0.3490.130

PM 18060 DX 60.5059.50

PM 18080 DX 80.5079.50

PM 180100 DX 100.5099.50

PM 19050 DX

190 195

50.5049.50

190.000189.928

195.046195.000

190.286190.130

0.3580.130

PM 19060 DX 60.5059.50

PM 19080 DX 80.5079.50

PM 190100 DX 100.5099.50

PM 190120 DX 120.5019.50

PM 20050 DX

200 205

50.5049.50

200.000199.928

205.046205.000

200.286200.130

PM 20060 DX 60.5059.50

PM 20080 DX 80.5079.50

PM 200100 DX 100.5099.50

PM 200120 DX 120.50119.50

PM 22050 DX

220 225

50.5049.50

220.000219.928

225.046225.000

220.286220.130

PM 22060 DX 60.5059.50

PM 22080 DX 80.5079.50

PM 220100 DX 100.5099.50

PM 220120 DX 120.50119.50

PM 24050 DX

240 245

50.5049.50

240.000239.928

245.046245.000

240.286240.130

PM 24060 DX 60.5059.50

PM 24080 DX 80.5079.50

PM 240100 DX 100.5099.50

PM 240120 DX 120.50119.50

Part No.

Nominalsize

WidthB

Wall thickness

S3

Shaft-øDJ [h8]

Housing-øDH [H7]

Bush i-ø Di,a

assembled in H7

housing


dL

Di Domax.min.

max.min.

max.min.

max.min.

max.min.

max.min.

10Standard Products

39

PM 25050 DX

250 255

50.5049.50

2.4352.380

250.000249.928

255.052255.000

250.292250.130

0.3640.130

-

PM 25060 DX 60.5059.50

PM 25080 DX 80.5079.50

PM 250100 DX 100.5099.50

PM 250120 DX 120.50119.50

PM 26050 DX

260 265

50.5049.50

260.000259.919

265.052265.000

260.292260.130

0.3730.130

PM 26060 DX 60.5059.50

PM 26080 DX 80.5079.50

PM 260100 DX 100.5099.50

PM 260120 DX 120.50119.50

PM 28050 DX

280 285

50.5049.50

280.000279.919

285.052285.000

280.292280.130

PM 28060 DX 60.5059.50

PM 28080 DX 80.5079.50

PM 280100 DX 100.5099.50

PM 280120 DX 120.50119.50

PM 30050 DX

300 305

50.5049.50

300.000299.919

305.052305.000

300.292300.130

PM 30060 DX 60.5059.50

PM 30080 DX 80.5079.50

PM 300100 DX 100.5099.50

PM 300120 DX 120.50119.50

Part No.

Nominalsize

WidthB

Wall thickness

S3

Shaft-øDJ [h8]

Housing-øDH [H7]

Bush i-ø Di,a

assembled in H7

housing


dL

Di Domax.min.

max.min.

max.min.

max.min.

max.min.

max.min.



40

10.2MB-DX cylindrical bushes

3i i,

a,m

o

dL

i

o

0.3

min

.

Dimensions and tolerances follow ISO 3547 and GSP-SpecificationsDetail Z

Split

Part No.

Nominalsize

WidthB

Wall thickness

S3

Shaft-øDJ [d8]

Housing-ø DH [H7]

Bush i-ø Di,a,m

machined to [H7]


dL

Di Domax.min.

max.min.

max.min.

max.min.

max.min.

max.min.

MB 0808 DX

8 10

8.257.75

1.1081.082

7.9607.938

10.01510.000

8.0158.000

0.0770.040 No holeMB 0810 DX

10.259.75

MB 0812 DX 12.2511.75

MB 1010 DX

10 12

10.259.75

9.9509.923

12.01812.000

10.01810.000

0.0800.040

3

MB 1012 DX 12.2511.754MB 1015 DX 15.2514.75

MB 1020 DX 20.2519.75

MB 1210 DX

12 14

10.259.75

11.95011.923

14.01814.000

12.01812.000

0.0950.050

3

MB 1212 DX 12.2511.75

4

MB 1215 DX 15.2514.75

MB 1220 DX 20.2519.75

MB 1225 DX 25.2524.75

MB 1415 DX

14 16

15.2514.75

13.95013.923

16.01816.000

14.01814.000MB 1420 DX

20.2519.75

MB 1425 DX 25.2524.75

MB 1510 DX

15 17

10.259.75

14.95014.923

17.01817.000

15.01815.000

3

MB 1512 DX 12.2511.754MB 1515 DX 15.2514.75

MB 1525 DX 25.2524.75

All dimensions in mm

S3 Co Ci

1 0.6 ± 0.4 0.1 to 0.5

1.5 0.6 ± 0.4 0.1 to 0.7

S3 Co Ci

2 1.2 ± 0.4 0.1 to 0.7

2.5 1.6 ± 0.8 0.2 to 1.0

ID and OD chamfers

10Standard Products

41

MB 1615 DX

16 18

15.2514.75

1.1081.082

15.95015.923

18.01818.000

16.01816.000

0.0950.050

4

MB 1620 DX 20.2519.75

MB 1625 DX 25.2524.75

MB 1815 DX

18 20

15.2514.75

17.95017.923

20.02120.000

18.01818.000MB 1820 DX

20.2519.75

MB 1825 DX 25.2524.75

MB 2010 DX

20 23

10.259.75

1.6081.576

19.93519.902

23.02123.000

20.02120.000

0.1190.065

MB 2015 DX 15.2514.75

MB 2020 DX 20.2519.75

MB 2025 DX 25.2524.75

MB 2030 DX 30.2529.75

MB 2215 DX

22 25

15.2514.75

21.93521.902

25.02125.000

22.02122.000

6

MB 2220 DX 20.2519.75

MB 2225 DX 25.2524.75

MB 2230 DX 30.2529.75

MB 2415 DX

24 27

15.2514.75

23.93523.902

27.02127.000

24.02124.000

MB 2420 DX 20.2519.75

MB 2425 DX 25.2524.75

MB 2430 DX 30.2529.75

MB 2515 DX

25 28

15.2514.75

24.93524.902

28.02128.000

25.02125.000

MB 2520 DX 20.2519.75

MB 2525 DX 25.2524.75

MB 2530 DX 30.2529.75

MB 2820 DX

28 32

20.2519.75

2.1082.072

27.93527.902

32.02532.000

28.02128.000MB 2825 DX

25.2524.75

MB 2830 DX 30.2529.75

MB 3020 Dx

30 34

20.2519.75

30.00029.967

34.02534.000

30.02130.000MB 3030 DX

30.2529.75

MB 3040 DX 40.2539.75

Part No.

Nominalsize

WidthB

Wall thickness

S3

Shaft-øDJ [d8]

Housing-ø DH [H7]

Bush i-ø Di,a,m

machined to [H7]


dL

Di Domax.min.

max.min.

max.min.

max.min.

max.min.

max.min.



42

MB 3220 DX

32 36

20.2519.75

2.1082.072

31.92031.881

36.02536.000

32.02532.000

0.1440.080

6

MB 3230 DX 30.2529.75

MB 3235 DX 35.2534.75

MB 3240 DX 40.2539.75

MB 3520 DX

35 39

20.2519.75

34.92034.881

39.02539.000

35.02535.000MB 3530 DX

30.2529.75

MB 3550 DX 50.2549.75

MB 3720 DX 37 41 20.2519.7536.92036.881

41.02541.000

37.02537.000

MB 4020 DX

40 44

20.2519.75

39.92039.881

44.02544.000

40.02540.000

8

MB 4030 DX 30.2529.75

MB 4040 DX 40.2539.75

MB 4050 DX 50.2549.75

MB 4520 DX

45 50

20.2519.75

2.6342.588

44.92044.881

50.02550.000

45.02545.000

MB 4530 DX 30.2529.75

MB 4540 DX 40.2539.75

MB 4545 DX 45.2544.75

MB 4550 DX 50.2549.75

MB 5040 DX50 55

40.2539.75 49.920

49.88155.03055.000

50.02550.000MB 5060 DX 60.2559.75

MB 5520 DX

55 60

20.2519.75

54.90054.854

60.03060.000

55.03055.000

0.1760.100

MB 5525 DX 25.2524.75

MB 5530 DX 30.2529.75

MB 5540 DX 40.2539.75

MB 5550 DX 50.2549.75

MB 5560 DX 60.2559.75

MB 6030 DX

60 65

30.2529.75

59.90059.854

65.03065.000

60.03060.000

MB 6040 DX 40.2539.75

MB 6060 DX 60.2559.75

MB 6070 DX 70.2569.75

Part No.

Nominalsize

WidthB

Wall thickness

S3

Shaft-øDJ [d8]

Housing-ø DH [H7]

Bush i-ø Di,a,m

machined to [H7]


dL

Di Domax.min.

max.min.

max.min.

max.min.

max.min.

max.min.

10Standard Products

43

MB 6540 DX

65 70

40.2539.75

2.6342.568

64.90064.854

70.03070.000

65.03065.000

0.1760.100

8

MB 6550 DX 50.2549.75

MB 6560 DX 60.2559.75

MB 6570 DX 70.2569.75

MB 7040 DX

70 75

40.2539.75

69.90069.854

75.03075.000

70.03070.000

MB 7050 DX 50.2549.75

MB 7065 DX 65.2564.75

MB 7070 DX 70.2569.75

MB 7080 DX 80.2579.75

MB 7540 DX

75 80

40.2539.75

74.90074.854

80.03080.000

75.03075.000

9.5

MB 7560 DX 60.2559.75

MB 7580 DX 80.2579.75

MB 8040 DX

80 85

40.5039.50

79.90079.854

85.03585.000

80.03080.000

MB 8060 DX 60.5059.50

MB 8080 DX 80.5079.50

MB 80100 DX 100.5099.50

MB 8530 DX

85 90

30.5029.50

84.88084.826

90.03590.000

85.03585.000

0.2090.120

MB 8540 DX 40.5039.50

MB 8560 DX 60.5059.50

MB 8580 DX 80.5079.50

MB 85100 DX 100.5099.50

MB 9040 DX

90 95

40.5039.50

89.88089.826

95.03595.000

90.03590.000

MB 9060 DX 60.5059.50

MB 9090 DX 90.5089.50

MB 90100 DX 100.5099.50

MB 9560 DX95 100

60.5059.50 94.880

94.826100.035100.000

95.03595.000MB 95100 DX 100.5099.50

MB 10050 DX

100 105

50.5049.50

99.88099.826

105.035105.000

100.035100.000

MB 10060 DX 60.5059.50

MB 10080 DX 80.5079.50

MB 10095 DX 95.5094.50

MB 100115DX 115.50114.50

Part No.

Nominalsize

WidthB

Wall thickness

S3

Shaft-øDJ [d8]

Housing-ø DH [H7]

Bush i-ø Di,a,m

machined to [H7]


dL

Di Domax.min.

max.min.

max.min.

max.min.

max.min.

max.min.



44

MB 10560 DX

105 110

60.5059.50

2.6342.568

104.880104.826

110.035110.000

105.035105.000

0.2090.120

9.5

MB 105110 DX 110.50109.50

MB 105115 DX 115.50114.50

MB 11060 DX110 115

60.5059.50 109.880

109.826115.035115.000

110.035105.000MB 110115 DX 115.50114.50

MB 11550 DX115 120

50.5049.50 114.880

114.826120.035120.000

115.035115.000MB 11570 DX 70.5069.95

MB 12060 DX120 125

60.5059.50 119.880

119.826125.040125.000

120.035120.000MB 120100 DX 100.5099.50

MB 125100 DX 125 130 100.5099.50124.855124.792

130.040130.000

125.040125.000

0.2480.145

MB 13050 DX

130 135

50.5049.50

2.6192.564

129.855129.792

135.040135.000

130.040130.000

-

MB 13060 DX 60.5059.50

MB 130100 DX 100.5099.50

MB 13560 DX135 140

60.5059.50 134.855

134.792140.040140.000

135.040135.000MB 13580 DX 80.5079.50

MB 14060 DX140 145

60.5059.50 139.855

139.792145.040145.000

140.040140.000MB 140100 DX 100.5099.50

MB 15060 DX

150 155

60.5059.50

149.855149.792

155.040155.000

150.040150.000MB 15080 DX

80.5079.50

MB 150100 DX 100.5099.50

Part No.

Nominalsize

WidthB

Wall thickness

S3

Shaft-øDJ [d8]

Housing-ø DH [H7]

Bush i-ø Di,a,m

machined to [H7]


dL

Di Domax.min.

max.min.

max.min.

max.min.

max.min.

max.min.

10Standard Products

45

10.3Inch DX cylindrical bushes

3i i,

a

o

dL

.015

.031

.012

min

.

20˚ ± 8˚

45˚ ± 5˚

Detail Z

Split

Part Nr.

Nominalsize

Wall thick-ness

S3

Width B±0.010

Hou-sing-ø

DH

Shaft-ø DJ

Bush i-ø Di,a as

supplied

Shaft for ma-

chinedbush i-ø

DJm

Bush i-ø Di,a

mahinedto H 7

Oil hole-ø

dL

Running Clea-

rance CD as

supplied

Running Clearanc

e CD machine

d

Di Domax.min.

max.min.

max.min.

max. min.

max.min.

max.min.

max.min.

max.min.

max.min.

06DX06

3/815/32

0.05100.0500

0.3850.365

0.46940.4687

0.36480.3639

0.36940.3667

0.37340.3725

0.37560.3750

No hole

0.00550.0019

0.00310.001606DX08

0.5100.490

5/32

06DX12 0.7600.740

07DX08 7/16

17/32

0.5100.490 0.5319

0.53120.42730.4263

0.43190.4292

0.43550.4345

0.43820.4375

0.00560.0019

0.00370.0020

07DX12 0.7600.740

08DX06

1/219/32

0.3850.365

0.59440.5937

0.48970.4887

0.49440.4917

0.49800.4970

0.50070.5000

0.00570.0020

08DX08 0.5100.490

08DX10 0.6350.615

08DX14 0.8850.865

09DX08 9/16

21/32

0.5100.490 0.6569

0.65620.55220.5512

0.55690.5542

0.56050.5595

0.56320.562509DX12 0.7600.740

10DX08

5/823/32

0.5100.490

0.71950.7187

0.61460.6136

0.61950.6167

0.62300.6220

0.62570.6250

0.00590.0021

10DX10 0.6350.615

10DX12 0.7600.740

10DX14 0.8850.865

11DX14 11/16 25/320.8850.865

0.78200.7812

0.67700.6760

0.68200.6792

0.68550.6845

0.68820.6875

0.00600.0022

12DX08

3/47/8

0.06690.0657

0.5100.490

0.87580.8750

0.73900.7378

0.74440.7412

0.74750.7463

0.75080.7500

0.00660.0022

0.00450.002512DX12

0.7600.740

12DX16 1.0100.990

All dimensions in inch



46

14DX12

7/8 1

0.06690.0657

0.7600.740

1.00081.0000

0.86390.8627

0.86940.8662

0.87250.8713

0.87580.8750

1/4

0.00670.0023

0.00450.0025

14DX14 0.8850.865

14DX16 1.0100.990

16DX12

1 11/8

0.7600.740

1.1258 1.1250

0.98880.9876

0.99440.9912

0.99750.9963

1.00081.0000

0.00680.002416DX16

1.0100.990

16DX24 1.5101.490

18DX1211/8

19/32

0.08240.0810

0.7600.740 1.2822

1.28121.11381.1126

1.12021.1164

1.12251.1213

1.12581.2500

0.00760.002618DX16 1.0100.990

20DX12

11/4 113/32

0.7600.740

1.40721.4062

1.23871.2371

1.24521.2414

1.24701.2454

1.25101.2500

0.00810.0027

0.00560.0030

20DX16 1.0100.990

20DX20 1.2601.240

20DX28 1.7601.740

22DX16

13/8 117/32

1.0100.990

1.53221.5312

1.36351.3619

1.37021.3664

1.37201.3704

1.37601.3750

0.00830.002922DX22

1.3850.365

22DX28 1.7601.740

24DX16

11/2 121/32

1.0100.990

1.65721.6562

1.48841.4868

1.49521.4914

1.49701.4954

1.50101.5000

5/16

0.00840.0030

24DX20 1.2601.240

24DX24 1.5101.490

24DX32 2.0101.990

26DX1615/8 1

25/32

1.0100.990 1.7822

1.78121.61331.6117

1.62021.6164

1.62201.6204

1.62601.6250

0.00850.003126DX24 1.5101.490

28DX16

13/4 115/16

0.09800.0962

1.0100.990

1.93851.9375

1.73831.7367

1.74611.7415

1.74701.7454

1.75101.7500

0.00940.0032

28DX24 1.5101.490

28DX28 1.7601.740

28DX32 2.0101.990

30DX16

17/8 21/16

1.5101.490

2.06372.0625

1.86321.8616

1.87131.8665

1.87201.8704

1.87601.8750

0.00970.003330DX30

1.8851.865

30DX36 2.2602.240

32DX16

2 23/16

1.0100.990

2.18872.1875

1.98811.9863

1.99631.9915

1.99601.9942

2.00122.0000

0.01000.0034

0.00700.0040

32DX24 1.5101.490

32DX32 2.0101.990

32DX40 2.5102.490

Part Nr.

Nominalsize

Wall thick-ness

S3

Width B±0.010

Hou-sing-ø

DH

Shaft-ø DJ

Bush i-ø Di,a as

supplied

Shaft for ma-

chinedbush i-ø

DJm

Bush i-ø Di,a

mahinedto H 7

Oil hole-ø

dL

Running Clea-

rance CD as

supplied

Running Clearanc

e CD machine

d

Di Domax.min.

max.min.

max.min.

max. min.

max.min.

max.min.

max.min.

max.min.

max.min.

10Standard Products

47

36DX32

21/4 27/16

0.09800.0962

2.0101.990

2.43872.4375

2.23782.2360

2.24632.2415

2.24602.2442

2.25122.2500

5/16

0.01030.0037

0.00700.0040

36DX36 2.2602.240

36DX40 2.5102.490

40DX3221/2 2

11/16

2.0101.990 2.6887

2.68752.48752.4857

2.49632.4915

2.49602.4942

2.50122.5000

0.01060.004040DX40 2.5102.490

44DX32

23/4 215/16

0.09910.0965

2.0101.990

2.93872.9375

2.73512.7333

2.74572.7393

2.74602.7442

2.75122.7500

0.01240.0042

44DX40 2.5102.490

44DX48 3.010 2.990

44DX56 3.510 3.490

48DX32

3 33/16

2.0101.990

3.18893.1875

2.98492.9831

2.99592.9893

2.99602.9942

3.00123.0000

3/8

0.01280.004448DX48

3.0102.990

48DX60 3.7603.740

56DX40

31/2 311/16

2.5102.490

3.68893.6875

3.48443.4822

3.49593.4893

3.49503.4928

3.50143.5000

0.01370.0049

0.00860.0050

56DX48 3.0102.990

56DX60 3.7603.740

64DX48

4 43/16

3.0102.990

4.18894.1875

3.98393.9817

3.99593.9893

3.99503.9928

4.00144.0000

0.01420.005464DX60

3.7603.740

64DX76 4.7604.740

Part Nr.

Nominalsize

Wall thick-ness

S3

Width B±0.010

Hou-sing-ø

DH

Shaft-ø DJ

Bush i-ø Di,a as

supplied

Shaft for ma-

chinedbush i-ø

DJm

Bush i-ø Di,a

mahinedto H 7

Oil hole-ø

dL

Running Clea-

rance CD as

supplied

Running Clearanc

e CD machine

d

Di Domax.min.

max.min.

max.min.

max. min.

max.min.

max.min.

max.min.

max.min.

max.min.



48

10.4DX Thrust Washers - metric

dp

Di

DoST

d D

Ta

Part No.

Inside-øDi

Outside-øDo

ThicknessST

Dowel holePCD-ø

dP

Dowel hole-ødD

Recess depthTa

max.min.

max.min.

max.min.

max.min.

max.min.

max.min.

WC10DX 12.2512.0024.0023.75

1.5771.487

18.1217.88

1.8751.625

1.200.95

WC12DX 14.2514.0026.0025.75

20.1219.88

2.3752.125WC14DX

16.2516.00

30.0029.75

22.1221.88

WC16DX 18.2518.0032.0031.75

25.1224.88

WC18DX 20.2520.0036.0035.75

28.1227.88

3.3753.125

WC20DX 22.2522.0038.0037.75

30.1229.88

WC22DX 24.2524.0042.0041.75

33.1232.88

WC24DX 26.2526.0044.0043.75

35.1234.88

WC25DX 28.2528.0048.0047.75

38.1237.88

4.3754.125

WC30DX 32.2532.0054.0053.75

43.1242.88

WC35DX 38.2538.0062.0061.75

50.1249.88

WC40DX 42.2542.0066.0065.75

54.1253.88

WC45DX 48.2548.0074.0073.75 2.600

2.510

61.1260.88 1.70

1.45WC50DX 52.2552.0078.0077.75

65.1264.88


10Standard Products

49

10.5DX Thrust Washers - inch

dp

Di

DoST

d D

Ta

Part No.

Inside-øDi

Outside-øDo

ThicknessST

Dowel holePCD-ø

dP

Dowel hole-ødD

Recess depthTa

max.min.

max.min.

max.min.

max.min.

max.min.

max.min.

DX06 0.51000.50000.87500.8650

0.06600.0625

0.69200.6820 0.0770

0.0670

0.05000.0400

DX07 0.57200.56201.00000.9900

0.78600.7760

DX08 0.63500.62501.12501.1150

0.88000.8700

0.10900.0990

DX09 0.69700.68701.18701.1770

0.94200.9320

DX10 0.76000.75001.25001.2400

1.00500.9950

DX11 0.82200.81201.37501.3650

1.09901.0890

DX12 0.88500.87501.50001.4900

1.19201.1820 0.1400

0.1300DX14 1.01001.00001.75001.7400

1.38001.3700

DX16 1.13501.12502.00001.9900

1.56701.5570

0.17100.1610DX18

1.26001.2500

2.12502.1150

1.69201.6820

DX20 1.38501.37502.25002.2400

1.81701.8070

DX22 1.51001.50002.50002.4900

2.00501.9950

0.20200.1920

DX24 1.63501.62502.62502.6150

2.13002.1200

DX26 1.76001.75002.75002.7400

2.25502.2450

DX28 2.01002.00003.00002.9900

0.09700.0935

2.50502.4950

0.08000.0700DX30

2.13502.1250

3.12503.1150

2.63002.6200

DX32 2.26002.25003.25003.2400

2.75502.7450




50

10.6DX Strip - metric

10.7DX Strip - inch

Ss

Wu

L+3

W

Group No. LengthLUsable Width

Wu

ThicknessSS

max.min.

S100 90 DX

500

93 1.071.03

S152 00 DX 200 1.561.52

S202 00 DX218

2.052.01

S252 00 DX 2.572.52

Group No. LengthLUsable Width

Wu

ThicknessSS

max.min.

B

18

2.75 0.04920.0480

C

4

0.06420.0630

D 0.07950.0783

E 0.09490.0937



Glacier Garlock Bearings warrants that products described in this bro-chure are free from defects in workmanship and material but unless expressly agreed in writing Glacier Garlock Bearings gives no war-ranty that these products are suitable for any particular purpose of for use under any specific conditions notwithstanding that such purpose would appear to be covered by this publication. Glacier Garlock Bea-rings accepts no liability for any loss, damage, or expense whatsoever arising directly or indirectly from use of its products. All business undertaken by Glacier Garlock Bearings is subject to its standard Conditions of Sale, copies of which are available upon request. Gla-cier Garlock Bearings products are subject to continual development and Glacier Garlock Bearings reserves the right to make changes in the specification and design of its products without prior notice.

GLACIERTM is a Trademark of the EnPro Industries Inc., USA.

DXTM is a Trademark of the EnPro Industries Inc., USA.

DSTM is a Trademark of the EnPro Industries

DX - AHR InternationalII Formula Symbols and Designations Formula Symbol Unit Designation aB-Bearing...

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Transcript of DX - AHR InternationalII Formula Symbols and Designations Formula Symbol Unit Designation aB-Bearing...