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    AXIAL PISTON PUMPS SERIES 20

    CLOSED CIRCUIT

    EPTM-mixer drives your solution for the

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    * One partner

    * One system

    * One Order

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    * One Guarantee

    * One package price

    EUROparts, Ltd, with its EpTM Mixer Drives

    the transit mixer drive:

    TRANSIT MIXER SPEED REDUCERS/PLANETARY GEAR BOXES

    Complete line of the German technology based Gear Boxes of the EpTM Series, for all drum driving

    application needs. Ep Gear Boxes Series integrates the quality & good service provided to you by EURO-

    parts, Ltd.

    EpTM sGEAR BOXES SERIES ADVANTAGES:

    HIGH TORQUE: From 60.000 to 82.000 Nm, for any drum driving application.

    IMROVEMENTS: Floating female spline sun gear for radial load absorption.

    BEST MATERIALS: In Casting, forging, gears as per DIN high standards.

    WORKMANSHIP: To assure optimum quality and performance.

    COMPACT DESIGN: Make the Ep Gear Boxes Series, one of the lightest gear-boxes in the industry tocomply with the weight limitation laws. Special design of the planetary carriers (triangular).

    EASY MINTENANCE: Simple assembling & disassembly procedures. Main Seal & Bearing not dama-

    ged while servicing.

    LONG LIFETIME: Meeting the highest standards of the transit mixer industry. Large output bearing

    fo hight torque performance and durability.

    in all models reducing the need of service parts srock. Flange and mounting holes to the pedestal

    are the same ones than all other main brands

    COST EFFECTIVE: Helping to compete in the ready mix industry

    HYDROSTATIC TRANSMISSIONS/HYDRAULIC PMUP&MOTOR

    Complete line of the NEW hydraulic pumps, motors and spare parts. Hydraulic Pumps & Motors EpTM

    TOP QUALITY: Best materials and advanced workmanship. Well and thru decades proven classics in

    the Transit Mixer Hydrostatic Drives

    COSTS SAVINGS: BRAND NEW product at a low costs NO MORE CORE HASSLES !

    INTERCHANGEABILITY: EpTM Series pumps, motors & spare parts are completely interchangeable

    with SAUER-SUNDSTRAND * series 20, size 20 to 27.

    NOWTHERE IS NO NEED TO SWITCH FROM A PROVEN HIGH QUALITY HYDROSTATIC TRANSMISSION

    Please, refer to our detailed Catalogue, for further details

    All manufacturers names, numbers and descriptions are used for reference only. It is not implied that any part listed is the part of any particular

    manufacturer Sauer/Sundstrand is a registered trademark of Sauer/Sundstrand Company Iowa/Neuminster

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    Page No. 1

    AXIAL PISTON PUMPS SERIES 20 ........................... .............................. .............................. ......................... 2

    GENERAL DESCRIPTIONS ...................................................................................................................... 2

    FEATURES .................................................................................................................................................. 3

    TECHNICAL DATA ........................... .............................. .............................. ............................... ............... 4

    SERVO DISPLACEMENT CONTROL (LINEAR RESPONSE) ................................................................... 6

    REVERSING TIME ...................................................................................................................................... 7

    DIMENSIONS .................... ..................... ..................... ...................... ....................................................... 8

    TYPE DESIGNATION .............................. .............................. .............................. ............................... ...... 11

    TYPES OF CONTROLS ............................ .............................. .............................. ............................... ...... 12

    SPARE PARTS ............................................................................................................................................13

    AXIAL PISTON FIXED MOTORS SERIES 20 ............................................................................................ 14

    GENERAL DESCRIPTIONS ........................................................................................................................14

    FEATURES .......................... .............................. .............................. .............................. .............................. 15

    TECHNICAL DATA ............................ .............................. .............................. ................................ ............ 16

    DIMENSIONS ............................................. .................................................... .......................................... 17

    MANIFOLD ASSY ............................ .............................. .............................. ............................... .............. 20

    TYPE DESIGNATION .......................... .............................. .............................. ............................... .......... 21

    SPARE PARTS ............................................................................................................................................. 22

    AXIAL PISTON VARIABLE MOTOR SERIES 20 ......................................................................................... 23

    TYPE DESIGNATION ................................................................................................................................. 23

    CONCRETE MIXER REDUCERS SERIES PM .............................................................................................. 24

    AXIAL PISTON PUMPS SERIES 20

    CLOSED CIRCUIT

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    General description

    Axial piston variable displacement pumps, Series 20,are of swash plate construction with variableflow capability suitable for hydrostatic transmissions with closed circuit.The flow rate is proportional to the pump`s driven speed displacement, which ,in turn ,is determined bythe swash plate angle .The latter is infinitely adjustable between zero and maximum displacementFlow direction is reserved by tilting the swash plate to the opposite side of the neutral or zerodisplacement position.

    Figure :

    Page No. 2

    AXIAL PISTON PUMPS SERIES 20

    CLOSED CIRCUIT

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    Upon release of the control handle, the swash plate automatically returns to the null position and theflow becomes zero.High case pressures can be achieved without leakage even at the lowest temperatures by usingsuitable shaft seals.The servo valve arrangement offers the facility to incorporate function regulators and remote controlsystems. Axial piston units are designed for easy servicing , complete dismantling and disassembly

    can be carried out with standard hand tools , and all components or sub assemblies are replaceable.

    Figure 2 shows schematically the function of hydrostatic transmission using an axial piston variabledisplacement pump and fixed displacement motor.

    Page No. 3

    Features

    Axial piston variable displacement pumps, Series 20, are well engineered and easy handle.The full length shaft with a highly efficient tapered roller bearing arrangement offers a high loadingcapacity for external radial forces.Additional pumps can be built on.The hydro mechanical servo displacement control maintains the selected swash plate position andhence pump displacement.

    AXIAL PISTON PUMPS SERIES 20

    CLOSED CIRCUIT

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    + for higher speeds contact our Application department

    Figure 3. External drain fluid lossfor frame sizes 20 23Determination of nominal pump size

    Vg . n . vQe = - ( l/min )

    1000

    15,9 . Vg . pMe = - ( Nm )

    100 . mh

    Mg . n Qe . pPe = - =

    9550 600 t

    Vg displacement ( cm3

    ) per revolutionp difference high and low pressure( MPa )n speed ( min

    1)

    v volumetric efficiency

    mh mechanical hydraulic efficiencyt total efficiency

    Page No. 4

    Frame sizeDimension

    20 21 22 23 24 25 26 27

    Max. displacement perrevolution of the variabledisplacement pump

    cm3

    33,3 51,6 69,8 89,0

    12,3 12,3 18,8 32,8 32,8 65,518,03 18,03

    118,7 165,8 227,3 333,7

    119,54 159,96 196,14 230,51 278,94 348,18 429,59 557,28

    3590 3100 2810 2590 2350 2100 1890 1670

    45 55 63 78 124 164 212 270

    Max. flow dm3min

    -1

    Displacement per revolution ofthe charge pump

    cm3

    Max. pressure MPa 35

    Nominal pressure MPa 21

    Max. pressure of control MPa 3,5Charge pressure MPa 0,8 2,0

    Max. pressure in case MPa 0,25 continuous 0,5 intermittent

    Maximum speed + min-1

    Minimum speed min-1

    500

    Nominal speed min-1

    1500

    Kinematic viscosity rangeof working fluid-starting-operating-optimum

    mm2s

    -11000

    12-60025-35

    Kind of working fluid mineral oil

    Operating temperature C -40 to + 50Max. temperature of workingfluid in tank

    C 80

    Purity of working fluid m 10

    Direction of shaft rotation clockwise or counter clockwise

    Maximum swash plate angle 18

    Weight kg

    Technical data

    Table 1:

    AXIAL PISTON PUMPS SERIES 20

    CLOSED CIRCUIT

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    EXAMPLES OF CURVES DEPENDENCES OF EFFICIENCY ,FLOW AND OUTPUT ON THE SPEED.

    ( for operating condition of 18 swash plate angle )

    For frame size 20 For frame size 22

    For frame size 23

    v volumetric efficiency

    t total efficiency

    Page No. 5

    AXIAL PISTON PUMPS SERIES 20

    CLOSED CIRCUIT

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    Servo Displacement Control ( linear response )

    Regulated by the control handle on the servo valve , the swash plate can be infinitely varied in bothdirections with the help of the servo system.The pump displacement resulting from any control handle position can be established usingfigures ( 5a 5c ). The angle of the control handle for stroke initiation and for the final position of thestroke can vary from unit to unit within the range of the tolerance band ( Figure 5a- 5c) .

    Frame size 20

    Frame size 22

    Frame size 23

    Page No. 6

    AXIAL PISTON PUMPS SERIES 20

    CLOSED CIRCUIT

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    Reversing Time

    Time for the directional change of the flow from Q max across 0 to Q max depending on the size of thecontrol orifice fitted in the supply port to the servo valve ( figure 7 ).

    The values given assume movement of the control handle directly from one end position to other .

    Adjustment time of handle: < minimum reversing timeOperating pressure: 21 MPaSpeed: 1450 min

    -1

    Viscosity: 35 mm2.s

    -1

    Schematic diagram of servovalve withAlternative orifice position

    Servo valve counterbored recessed forOrifices insert

    The reversing time in one flow direction can be extended by inserting an orifice in one of the pilot portsonly.

    Table 2.

    Page No. 7

    0,761,05

    1,60without orifice

    0,76

    1,051,60

    without orifice

    0,76

    1,051,60

    without orifice

    0,76

    1,05

    1,60without orifice

    20

    21

    22

    23

    Frame

    sizeDiameter of orifice

    (mm)

    Reversing time

    (s)

    3,782,16

    1,140,60

    6,063,42

    1,740,96

    4,142,34

    1,200,66

    6,24

    3,54

    1,801,02

    0,761,051,60

    without orifice

    0,761,051,60

    without orifice

    0,761,051,60

    without orifice

    0,761,05

    1,60without orifice

    24

    25

    26

    27

    Framesize

    Diameter of orifice(mm)

    Reversing time(s)

    10,205,822,881,68

    11,585,923,121,86

    29,7016,207,503,78

    30,9015,72

    7,805,64

    AXIAL PISTON PUMPS SERIES 20

    CLOSED CIRCUIT

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    Table 3. Dimensions / mm /

    Dimensions

    Page No. 8

    Framesize

    A A1 B B1 B2 B3 C D D3 D4 D5 EF

    +-0,4G

    20 190 146 47.6 112,7 100 122 56 15 163

    21 191 146 48 124 110 131 70 15 172

    22 194 194 48 133 113 135 83 15 172

    23 194 194 49 150,8 123,8 14656 162 127

    -0,00584

    90 15 190,4

    24 213 204 70 167 132 153 75 229 152,4 98 133 21,3 213

    25 286 254 80 174 142 162 317,5 165,1 98 160 21,3 260

    26 285 240 81 197 153 174 317,5 165,1 110 180 21,3 287,4

    27 300 274 86 212 172 19377

    350 177,8 114

    25,4

    208 27,7 317,4

    Framesize

    G1 H H1 H2 H3 L L1 L2 S M N R1 S1

    20 81,03 340 270 284 352 224 161,2 93,7 94,7 55,6 68 100

    21 86 358 282 301 367 246 174 106 108,7 65 68 107

    22 86 381 311 314 381 256 188 119 112,7 68,3 68,3 111

    23 95,2 395 320 327 395 270 194 127 127,6 77,8 68,3 117

    24 106,5 498 377 412 510 318 239 169 146 87,3 76 148

    25 130 560 423 457 560 366 264 196 153,7 97 76 171

    26 143,7 584 451 486 614 388 283 215 170,3 108 76 162

    27 158,7 656 475 578 656 433 311 244

    19-0,25

    187,2 127 76 198

    Framesize

    T U V V1 V3 X Y Z W d d1 f

    20 152 113 115,9 159 3 321 160 122 128,6 152 6,35 6,35

    22 165 123 128,6 146 9,5 9,5

    34,5-0,17

    16

    2319

    171 134 139,8 140 12,7 12,7 37,68-0.18

    M10 5 H

    17,5

    24 186 154 152,3 173 14 14

    3/8-16UNC-2B

    25 199 175 165,1 219 16 16

    26 201 214 167,4 235 14,3 16,344,03

    M14 5 H

    23,5

    27

    9,4+0,2

    21

    225 216 190,5 246 17,5 17,5

    5/8-11UNC-2B

    64,66 M16 25

    Framesize

    e h1 h2 k l l1 m n

    20 62 51,16

    21 68 54

    22 71,4 60,5

    23 77,7 65

    4812,5

    min20

    24 88,5 68,2 12,45 3052,4 26,2

    25 98 74 30

    26 100 79,4 36,7

    27

    6,73

    116 95,367 15,6

    30

    45o

    79,4 36,5

    H with charge pump 12cm

    3

    (sizes 20-23), 33 cm3

    (size

    25)

    H3 with charge pump 18cm

    3

    (sizes 20-23), 33 cm3

    (size24), 66 cm

    3(size 25)

    Framesize

    Port A and BP1,2drain

    Port Rgear pump

    M1, M2,Z2

    20 -24SAE flange, 3000 psi

    4 threads, 3/8-16 UNC-2B, 18 deep 7/8-14 UNF-2B 7/8-14 UNF-2B

    25 15/16

    12 UN-2B 15/16

    12 UN-2B

    26 15/16

    12 UN-2B

    27

    SAE flange, size 11/2

    4 threads, 6000 psi, 5/8-11 UNC-2B,35 deep

    1 7/8-12 UNF-2B

    SAE straightthreads

    O ring boss

    SAE flange,size 1 1/4,3000 psi, 4 threads

    7/16-14 UNC-2B

    7/16-20 UNF-2B,

    SAE straight

    threadO-ring boss

    AXIAL PISTON PUMPS SERIES 20

    CLOSED CIRCUIT

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    Figure. 8 Outline drawing for axial piston variable displacement pumps, Series 20,frame size 20-23.

    Deviating control lever of servo valve in direction:A: Causes high pressure in A orifice in clockwise pump

    Causes high pressure in B orifice in counter clockwise pumpB: Causes high pressure in B orifice in clockwise pump

    Causes high pressure in A orifice in counter clockwise pump

    B

    15

    HH1

    LL 1

    XS1

    BP2

    n

    R

    D5

    Wh2

    m

    h1

    h1

    ck

    I1

    d2

    d

    D4

    D3

    I

    E

    e

    S

    ZERO POSITION

    OIL DRAINAGE

    B A L 2H2

    Page No. 9

    a

    G

    Z1 M1B1

    V3

    B2B3

    +0,8-0,3

    AXIAL PISTON PUMPS SERIES 20

    CLOSED CIRCUIT

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    Dimensions /mm/:

    Frame size A B C D-0,1 E-0,1 F H J

    20-24 81 70 35 52,4 26,2 3/816 UNC-2A Was

    s

    her 10,2 22,5

    25-27 112 95 46 79,4 36,5 5/811 UNC-2A Wa her 16 30

    Dimensions /mm/:

    Frame size A B C D-0,1 E-0,1 F H J

    25-27 112 95 65 79,4 36,5 5/811 UNC-2A Washer 16 30

    20-24 81 70 40 52,4 26,2 3/816 UNC-2A Washer 10 22,5

    Frame size K L M-0,1 N-0,1 O P + 0,2 U

    25 27 38 50 12,6 2,8 53,90,01 4 V6-158

    20 24 28 38 8 2,8 39,70,05 4 V5-104

    Note:Flange according to SAE J 518 c

    Frame size 20 24: size 1, 5000 psi, torque for screw tightening 3/8 16 UNC2A: 37 42 NmFrame size 25 27: size 1 1/2, 6000 psi, torque for screw tightening 5/8 11 UNC2A: 158 181 Nm

    Figure 9: Hose flange

    Firuge 0: Flange for piping

    Page No. 10

    AXIAL PISTON PUMPS SERIES 20

    CLOSED CIRCUIT

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    Page No. 11

    Reversible

    33,3

    51,6

    69,889,0

    118,7165,8

    227,3333,7

    Special

    R

    A

    other

    B

    C

    D

    F

    21,80

    Type designation

    NN

    AA

    BA

    CA

    20

    21

    22

    23

    24

    25

    26

    27

    F 40 64,66

    18,85 cm3

    65,5 cm3

    AXIAL PISTON PUMPS SERIES 20

    CLOSED CIRCUIT

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    Types of controls

    Page No. 12

    AXIAL PISTON PUMPS SERIES 20

    CLOSED CIRCUIT

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    To enquiry for spare parts, please specify the following :

    - position number according to explosion view- name of the part

    - size of pump or motor (PV or MF 20,21,22,23,24,25,26,27)- quantity required

    Page No. 13

    Spare Parts

    Item Pcs Name Item Pcs Name Item Pcs Name

    1 1 Servovalve Assembly 32 2 Spring Guide 63 4 Pin2 1 Charge Pump CW 33 1 Shim 64 1 Drive Screw3 2 Servo Cylinder 34 2 Washer 65 1 Pin4 2 Servo Piston 35 1 Orifice 66 4 Pin5 1 Front Cover 36 1 Spacer 67 1 Retaining Ring6 1 Pump Housing 37 1 Control Handle 68 2 Retaining Ring7 1 End Cap 38 3 Loop 69 8 Retaining Ring8 1 Swash Plate 39 2 Cap 70 1 O- Ring9 2 Check Valve 40 1 Brand plate 71 2 O- Ring

    10 1 Cylinder Barrel Housing 41 1 Control Valve Gasket 72 1 O- Ring11 9 Piston Assembly 42 1 Charge Pump Gasket 73 2 O- Ring12 1 Bearing Plate 43 2 Shim Pack 74 2 O- Ring13 1 Retainer Guide 44 1 End Cap Gasket 75 2 O- Ring14 1 Slipper Retainer 45 1 Front Cover Gasket 76 4 O- Ring15 1 Spring Retainer 46 Not used 77 1 Main shaft bearing

    16 1 Spring Seat 476

    (8*)Seal Spring 78 1 Shaft bearing

    17 1 Spring Guide 48 2 Servo Spring 79 2 Swashplate bearing

    18 1 Bearing Plate Pilot 49 1 Nut 80 20 Washer19 1 Pin 50 3 Plastic Plug 81 13 Washer20 1 Cylinder Barrel Spring 51 1 Plug 82 1 Washer21 6 Retainer Spring 52 4 Expander 05 83 4 Drive Screw22 1 Retaining Ring 53 1 Expander 09 84 6 Washer23 1 Thrust Plate 54 9 Hex Head Screw 85 1 Link Swahsplate

    24 1Valve Plate CWValve Plate CCW

    55 4 Hex Head Screw 86 4 Socket Head Screw

    25 2 Trunnion 56 Not used 87 2 O- Ring26 1 Seal Retainer 57 8 Hex Head Screw 88 Not used27 1 Rotating Seal 58 3 End Cap Screw 89 4 Hex Head Screw28 1 Stationary Seal 59 5 End Cap Screw 1 Cylinder barrel set29 1 Drive Shaft 60 2 Screw 1 Set of gaskets30 2 Servo Link 61 6 Hex Head Screw 1 Shaft sealings set31 2 Sleeve Retainer 62 1 Pin

    AXIAL PISTON PUMPS SERIES 20

    CLOSED CIRCUIT

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    General Description

    Axial piston fixed displacement motors, Series 20, are of swash plate construction with presetdisplacement, and are intended for closed circuit operation.The output speed is proportional to the flow rate of the input fluid.The output torque is proportional to the differential between high and low pressure sides of the fluidcirucit.The direction of motor (output) shaft rotation depends upon which port the fluid enters the motor.

    Figure :

    Page No. 14

    AXIAL PISTON FIXED MOTORS SERIES 20

    CLOSED CIRCUIT

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    Figure 2:

    Figure 2 shows schematically the function of a hydrostatic transmission using an axial piston variabledisplacement pump and a fixed displacement motor.

    Page No. 15

    Features

    Axial piston fixed displacement motors, Series 20, are well-engineered and easy to handle.

    The full-length shaft with a highly efficient tapered roller bearing arrangement offers a high loadingcapacity for external radial forces.

    High case pressures can be achieved without leakage even at the lowest temperatures by usingsuitable shaft seals.

    The modular construction of the units simplifies the production of a wide variety of model options whilelimiting the number of different components involved.

    Light weight, short versions available on request.

    AXIAL PISTON FIXED MOTORS SERIES 20

    CLOSED CIRCUIT

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    + for higher speeds contact our Application department

    Figure 3. External drain fluid lossfor frame sizes 20 23

    VM . n . vQe = - ( l/min )

    1000

    15,9 . VM . pMe = - ( Nm )

    100

    mh

    Mg . n e . pPe = - =

    9550 600

    t

    VM displacement ( cm3

    ) per revolutionp difference high and low pressure( MPa )n speed ( min

    1)

    v volumetric efficiency

    mh mechanical hydraulic efficiencyt total efficiency

    Frame sizeDimension

    20 21 22 23 24 25 26 27

    Max. displacement perrevolution of the fixed motor

    cm3

    33,3 51,6 69,8 89,0

    12,3 12,3 18,8 32,8 32,8 65,518,03 18,03

    118,7 165,8 227,3 333,7

    119,54 159,96 196,14 230,51 278,94 348,18 429,59 557,28

    3590 3100 2810 2590 2350 2100 1890 1670

    30 35 40 47 70 124 152 197

    Max. flow dm3min

    -1

    Displacement per revolution ofthe charge pump

    cm3

    Max. pressure MPa 35

    Nominal pressure MPa 21

    Max. pressure of control MPa 3,5Charge pressure MPa 0,8 2,0

    Max. pressure in case MPa 0,25 continuous 0,5 intermittent

    Maximum speed + min-1

    Minimum speed min-1

    500

    Nominal speed min-1

    1500

    Kinematic viscosity rangeof working fluid-starting-operating-optimum

    mm2s

    -11000

    12-60025-35

    Kind of working fluid mineral oil

    Operating temperature C -40 to + 50Max. temperature of workingfluid in tank

    C 80

    Purity of working fluid m 10

    Direction of shaft rotation clockwise or counter clockwise

    Maximum swash plate angle 18

    Weight kg

    Technical data

    Table 1:

    Motor input flow

    output

    . Q

    torque

    outputpower

    (kW )

    .

    Page No. 16

    AXIAL PISTON FIXED MOTORS SERIES 20

    CLOSED CIRCUIT

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    Table 2: Dimensions /mm/

    Framesize

    A C C1 D D1 D2 D3 D4 D5 F H

    20 15,71,5 56 190 162 146 140 127- 0,05 108 25,4 15+0,8 -0,3 340

    21 15,71,5 56 190 162 147 154 127- 0,05 108 25,4 15+0,8 -0,3 360

    22 15,71,5 56 194 162 194 161 127- 0,05 108 25,4 15+ 0,8 -0,3 380

    23 17,21,5 56 194 162 194 180 127- 0,05 108 25,4 15+0,8 -0,3 395

    24 25 75 214 229 204 200 152,4-0,05 121 25,4 21,3+0,8-0,3 442

    25 25 77 285 317,5

    317,5

    254 230 165,1-0,05 127 36,5 20,5+ 0,8-0,3 542

    26 27 77 281 273 271,5 165,1-0,05 127 36,5 20,6+0,8-0,3 57227 38 77 298 350 298 292 177,8-0,05 140 36,5 27 603

    Framesize

    H1 H2 H3 H4 H5 H6 K P1,P2,P3 R R1 R2 U2

    20 36 252 315 277 11 25 214 88,7 82 18 19

    21 36 270 354 295 32 235 97 88 18 19

    22 36 291 382 315

    6 44

    9

    30 255,3

    7/8-14 UNF-2B

    108 98 18 1923 36 306 400 331

    12272,3 117 107 18 19

    24 362 481 388,7 305 125 109 21

    25 387 524 442,5 330 136,5 136 2126 410 547 346 139,7 152 21

    27 447 588 483,5 387 154 161 21

    Framesize

    U1 W b B1 d d1 h H1 k

    20 82,5 34,5-0,17

    227/8-14UNF-2B 3/8-16UNC-2B

    5/8-11UNC-2B

    172 86

    171

    162

    34,5-0,17 M10

    103

    87 48

    23 192 96 37,68-0,18 M10 115 96 48

    24 214 107 44-0,18 M14 100 67

    25 260 130 44-0,1844-0,18

    M14 124 6726 292 146 M14 170 138 67

    27 317 159 64,7-0,18 M16 183 146 67

    Framesize

    I I1 x z m n x1, x2, x3

    20

    21

    222324

    12,5 0,2 min.20 156 450

    52,4 26,2

    25 16 0,2 min.30 219 450

    79,4 36,5

    26 16 0,2 mi

    i

    i

    i

    i

    n.30 228,5

    7/8-14UNF

    UN

    -2B

    -2B15/16-12 450

    79,4 36,5

    12,5 0,2 m n.20 170 450

    52,4 26,2

    12,5 0,2 m n.30 175 450

    52,4 26,2

    12,5 0,2 m n.20 160 450

    52,4 26,2

    12,5 0,2 m n.20 165 450

    52,4 26,2

    7/16-20 UNF 2B

    27 16 0,2 min.40 278 45

    0

    79,4 36,5

    M10 71 4821 85,8 34,5-0,17 M10 76 48

    100,6

    Page No. 17

    AXIAL PISTON FIXED MOTORS SERIES 20

    CLOSED CIRCUIT

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    Figure 4: Outline drawing motor configuration with manifold assy.

    Page No. 18

    AXIAL PISTON FIXED MOTORS SERIES 20

    CLOSED CIRCUIT

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    Dimensions /mm/:

    Frame size A B C D-0,1 E-0,1 F H J

    20-24 81 70 35 52,4 26,2 3/816 UNC-2A Was

    s

    her 10,2 22,5

    25-27 112 95 46 79,4 36,5 5/811 UNC-2A Wa her 16 30

    Dimensions /mm/:

    Frame size A B C D-0,1 E-0,1 F H J

    25-27 112 95 65 79,4 36,5 5/811 UNC-2A Washer 16 30

    20-24 81 70 40 52,4 26,2 3/816 UNC-2A Washer 10 22,5

    Frame size K L M-0,1 N-0,1 O P + 0,2 U

    25 27 38 50 12,6 2,8 53,90,01 4 V6-158

    20 24 28 38 8 2,8 39,70,05 4 V5-104

    Note:Flange according to SAE J 518 c

    Frame size 20 24: size 1, 5000 psi, torque for screw tightening 3/8 16 UNC2A: 37 42 NmFrame size 25 27: size 1 1/2, 6000 psi, torque for screw tightening 5/8 11 UNC2A: 158 181 Nm

    Figure 9: Hose flange

    Firuge 0: Flange for piping

    Page No. 19

    AXIAL PISTON FIXED MOTORS SERIES 20

    CLOSED CIRCUIT

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    Manifold assy

    Manifold assy consist of control elements that serve to restrict working pressure in the high pressurehydrostatic circuit, to exchange the heated working fluid in closed hydrostatic circuit, to charge thevolume losses in closed hydrostatic circuit, to charge the volume losses hydrostatic circuit as well tosecure rinsing of transmission case.

    Manifold assy with by-pass valve

    Manifold assy with by-pass valve secures all the functions as manifold assy. On the back side there isa built-in by-pass valve designed for interconnection of high pressure lines in closed hydrostatic circuit.

    Page No. 20

    AXIAL PISTON FIXED MOTORS SERIES 20

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    MotorFixed

    Manifold assy

    Pressure setting of low-pressure valve in the manifold assy

    Pressure setting in port A

    11 1,1 MPa ( 1,1 0,05 MPa at 3,8 dm3.min-1)

    11 MPa11

    14

    35

    4042

    14 MPa

    35 MPa

    40 MPa

    42 MPa

    00 Without pressure valve

    Pressure setting in port B

    11 MPa11

    14

    35

    40

    42

    14 MPa

    35 MPa

    40 MPa

    42 MPa

    00 Without pressure valve

    13 1,3 MPa ( 1,3 0,05 MPa at 3,8 dm3.min-1)

    16 1,6 MPa ( 1,3 0,05 MPa at 3,8 dm3.min-1)

    00 without manifold assy

    Manifold assy with by-pass valve

    Manifold assy without by-pass valve

    Without manifold assy with cover plate

    Without manifold assy with by-pass valve

    Without manifold assy

    Special

    R

    F

    A

    B

    C

    D

    N

    MF

    MF

    3.

    6.

    21,80

    Type designation

    Page No. 21

    40 64,66

    20

    21

    22

    23

    24

    25

    26

    27

    33,3

    51,6

    69,8

    89,0

    118,7

    165,8227,3

    333,7

    AXIAL PISTON FIXED MOTORS SERIES 20

    CLOSED CIRCUIT

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    Item Pcs Name Item Pcs Name Item Pcs Name

    1 1 Manifold Assy 35 MPa 19 1 Seal Retainer 37 1 Drive Screw

    2 1 Motor Housing 20 1 Rotaling Seal 38 1 Pin

    3 1 End Cap 21 1 Stationary Seal 39 1 Pin

    4 1 Swash Plate 22 1 Drive Shaft 40 2 Pin

    5 1 Cylinder Barrel Housing 23 1 Shim 41 1 Retaining Ring

    6 9 Piston Assembly 24 1 Loop 42 1 O- Ring

    7 1 Bearing Plate 25 2 Cap 43 1 O- Ring

    8 1 Retainer Guide 26 1 Not used 44 2 O- Ring

    9 1 Slipper Retainer 27 1 End Cap Gasket 45 1 O- Ring

    10 1 Spring Retainer 28 Not used 46 1 Bearing

    11 1 Spring Seat 29 6 Seal Spring 47 1 Bearing

    12 1 Spring Guide 30 1 Plug 48 8 Washer

    13 1 Bearing Plate Pilot 31 1 Plug 49 6 Washer

    14 1 Pin 32 1 Hex Head Plug 50 4 Drive Screw

    15 1 Cylinder Barrel Spring 33 6 Hex Head Screw 51 2 O- Ring

    16 6 Retainer Spring 34 4 End Cap Screw 52 1 Washer

    17 1 Retainer Ring 35 3 Hex Head Screw 1 Cylinder barrel set

    18 1 Valve Plate 36 Not used 1 Set of gaskets

    1 Shaft sealings set

    To enquiry for spare parts, please specify the following :

    - position number according to explosion view- name of the part- size of pump or motor (PV or MF 20,21,22,23,24,25,26,27)- quantity required

    Page No. 22

    Spare Parts

    AXIAL PISTON FIXED MOTORS SERIES 20

    CLOSED CIRCUIT

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    Page No. 23

    Type designation

    2 3XX XXX

    1.MV

    12.

    2.

    22 23 11.

    A

    3. B

    C

    D

    E

    N

    1

    2 3

    4

    5

    6

    7

    0

    10.

    21

    28

    35

    40

    42

    45

    48

    52

    4. 20 22 23

    A - 9. Pressure setting in port AB 21

    C 28

    D - - 35 E - - 40 F - - 42 G - - 45 I - 48 J - - 52 K

    L -M - - 8.P - 11 X 13

    16

    00

    5. 20 22 23 Other values according to mutual agreement.

    A

    B 7.

    C 20 22 23

    07 12,45 26,38 33,59

    08 14,26 30,15 38,51

    6. 09 16,06 34,09 43,26

    A 10 18,03 37,85 48,18

    B 11 19,83 41,79 53,26

    12 21,63 45,72 58,17

    - available 13 23,6 4 9,6 5 63 ,25 - 14 25,4 5 3,5 9 68 ,17

    AAA

    13 teeth, 16/32 PITCH, 21,805

    19 teeth, 16/32 PITCH, 31,75

    21 teeth, 16/32 PITCH, 34,50

    23 teeth, 16/32 PITCH, 37,68

    27 teeth, 16/32 PITCH, 44,03

    1

    - on request

    X

    - pressure value 20 Mpa

    - electric control; voltege 24V=; Dn 6 mm

    - empty

    - electric control; voltege 12V=; Dn 6 mm

    AUTOMATIC

    9

    X

    - standard

    - without the mechanical -hydraulic servo valve,

    with top cover only

    RPx

    - pressure value 25 Mpa

    2

    3

    4

    5

    - automatic control - constant pressure

    0

    4

    2

    XX

    MHx

    0

    MECHANICAL - HYDRAULIC

    X

    WHITOUT CONTROLS DEVICE

    20

    -three positional distributor (non-continuous)

    MV

    Motor

    variable

    TYPES OF CONTROLS

    Displacement

    Vgmax [cm3]

    without orifice

    orifice in channel "P","A","B"

    orifice in channel "A"

    8

    7

    6

    - pressure value 5 Mpa

    - pressure value 10 Mpa

    - pressure value 15 Mpa

    - pressure value 30 Mpa

    15 teeth, 16/32 PITCH, 25,40

    13 teeth, 8/16 PITCH, 43,71

    20 teeth, 16/32 PITCH, 33,91

    cone 1:8, SEA J501, 41,27

    cone 1:8, SEA J501, 31,75

    Dimension of the input shaft

    8XX

    parallel with key 34,925;

    - mechanical -hydraulic servo valve

    ELECTRICAL - HYDRAULIC

    Erx

    - pressure value 35 Mpa

    - pressure value 40 Mpa

    1

    14

    special design on request

    28 Mpa

    35 Mpa

    40 Mpa

    42 Mpa

    45 Mpa

    48 Mpa

    Manifold assy with by-pass valve

    Manifold assy without by-pass valve

    standard design

    765

    ISO 6162, DIN25, type II, 40 MPa M 12

    Manifold assy

    1

    7/16"-14 UNC-2B

    14 teeth, 12/24 PITCH, 31,20

    XX9

    XX XX10

    BBB-without the mechanical-hydraulic servo valve,

    with D18 joining piece and cover

    without orifice

    orifice in channel "P"

    1,36 mm

    Orifice

    12XXX

    11

    Special production

    number "000"

    0,76 mm

    0,91 mm

    1,05 mm

    orifice in channel "B"

    orifice in channel "P","A"

    1.6 mm

    28 Mpa

    21 Mpa

    orifice in channel "A","B"

    52 Mpa

    orifice in channel "P","B"

    Pressure setting in port B

    21 Mpa

    35 Mpa

    40 Mpa

    42 Mpa

    48 Mpa

    SEA J518c , code 61, size 1", 5000PSI 3/8"-16 UNC-2B

    Pressure setting of low-pressure valve in the manifold assy

    1,1MPa (1,10,05 Mpa at 3,8 dm3.min-1)

    1,3MPa (1,30,05 Mpa at 3,8 dm3.min-1)

    FRAME SIZE

    SEA J518c , code 62, size 1", 6000PSI

    Dimension of high pressure ports Thread

    parallel with key 44,45;

    1,6MPa (1,60,05 Mpa at 3,8 dm3.min-1)

    without manifold assy

    45 Mpa

    10

    The minimum inclination angle of the swashplate

    Displacement in cm3

    52 Mpa

    11

    12

    13

    7

    8

    9

    AXIAL PISTON VARIABLE MOTORS SERIES 20

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    MODEL PARAMETER PM60 PM60 WP PM70 PM70 WP PM80 PM80 WP

    Gear ratio 1:96,2 1:96,2 1:138,7 1:138,7 1:138,7 1:138,7

    Input speed rpm 1100 -1350 1100 -1350 1400-1900 1400-1500 1400-1900 1400-1500

    Drum speed rpm 11-14 11-14 11-14 11-14 11-14 11-14

    Max. drum driving moment :

    with hydraulic motor 70cm3/rev. kNm 42 42 - - - -

    with hydraulic motor 90cm3/rev. kNm 54 54 70 70 78 80

    Max. drum volume with HM70 m3 7 7 - - - -

    Max. drum volume with HM90 m3 9 9 10 10 15 15

    Hydraulic motors teeth number - 21 21 21 21 21 21

    Water pump gearing - - 2,333 - 2,333 - 2,333

    Max. speed of water pump rpm - 3150 - 3500 - 3500

    Max. power of water pump l/min. - 500 - 600 - 600

    Oil quantity up to eye-sight l (Liter) 7 7 8 8 8 8

    Oil viscosity ISO VG 320 (CLP oil DIN 51517/3)

    Oil quality ref. AH408.802. 990-001 EN

    Sound pressure level dB(A) 75 75 82 82 82 82

    Weight Kg 275 280 290 295 292 297

    Ordering example : PM60 reducer without water pump drive PM60 WP - reducer with water pump drive

    CONCRETE MIXER SPEED REDUCERS(PLANETARY GEAR BOXES)

    Ep Series

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    5

    CONCRETE MIXER SPEED REDUCERS(PLANETARY GEAR BOXES)

    Ep Series

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    Page No. 27

    CONCRETE MIXER SPEED REDUCERS(PLANETARY GEAR BOXES)

    Ep Series

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    assemblyangle

    outletforh

    ydraulic

    motor21teeth

    fixationscre

    wM12x20

    oilcontrol

    gauge

    sealO

    ring

    124x4

    oiloutletplu

    g

    outletplu

    g

    fillingplug

    pouringplug

    530h9

    20

    406

    187

    20

    190

    518

    14

    12,500

    79,500

    127H7

    31.75H11

    17

    LK500/24x15

    40

    54

    /248.68

    /

    2

    3

    40

    3

    3

    15

    18

    118,500

    33

    53

    67

    36

    .3

    153

    110

    70

    460

    460

    200

    200

    200

    200

    70

    162

    8

    8

    DIMENSIONDRAWING

    CONCRETE MIXER SPEED REDUCERS(PLANETARY GEAR BOXES)

    Ep Series

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