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Steering Catalog

Steering Control Units

Torque Generators

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2/1062 EATON C har-Lynn Steering Catalog C-STOV-MC001-E1 J uly 2006

Literature Referenced in this Catalog:

Eaton Technical B ulletin 3-401

Eaton Flow D ivider C atalog E-VLFL-M C 001-E

Eaton Relief Valve C atalog 11-510

Eaton G ear Pum ps Series 26 M odel 26000 C atalog 11-609

Eaton C har-Lynn Low Speed H igh Torque M otors Catalog E -M O LO -M C 001-E2

Vickers Screw in C artridge Values C atalog V-VLO V-M C 001-E2

Vickers Proportional Valves C atalog 539

Vickers Solenoid O perated D irectional Valves C atalog G B -C -2015




3/106EATON Char-Lynn Steering Catalog C-STOV-MC001-E1 J uly 2006

Table ofContents

Description and Technologies About Power SteeringDescription and Advantages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Hydraulic Circuit Explanation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Neutral Circuits

Open Center . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Open Center Power Beyond . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Closed Center . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Load Sensing (static and dynamic signal) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Work Circuits

Non-Load Reaction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Load Reaction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Steering Units with Integral Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Special Features and Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Manual Steering. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2 Speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Dual Displacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Eaton Patented Technologies

Q-Amp (Flow Amplification) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Wide Angle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Cylinder Damping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

VersaSteer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

STC Direct Porting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Steering Control Units and Torque GeneratorsSeries 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Series 10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Series 20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Series 25 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Series 40 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Torque Generator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Steering System Components and System AccessoriesAntijerk Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Priority Valves VLC, VLE, VLH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Check Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Relief Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Columns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Steering Wheels and Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

EH Proportional Steer Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Four Wheel Steer Switching Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Flow Divider Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Brake Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

T Series Hydraulic Motors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Sizing and Application

Ackermann Type Steering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Articulated Type Steering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Articulated Vehicle Steering Analysis Form. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Articulated Vehicle Steering Analysis Form. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Information contained in this publication is accurate as of the publication date and is subject to change without notice. Performance values are typical values. Customers are responsible for selectingproducts for their applications using normal engineering methods.




4/106



Description andAdvantages

Torque Generator

Char-Lynn torque generators have been completelyredesigned to meet the needs of the changingmarketplace. These torque generators have servedthe industry well, providing:

Pow er assist for vehicle steering

Pow er assist on gates and valves, elim inating thelarge hand w heels

Pow erful rotary m otion w ith effortless m anual rotaryinput on num erous other applications

Todays m arket includes pow er steering on electric lifttrucks. These new torque generators have been designedw ith features that greatly im prove the operators com fort asw ell as the vehicles perform ance.

Use the Torque Generator as rotary power assist for:

Large indexing tables

M anually operated gates and valves

M anual positioning devices

M echanical steering system s

Turntables

SERIES 2 17, 227

Displacement 76 - 160 cm3/r 4.7 - 9.6 in3/r

Flow 15 l/min 4 GPM

Pressure 69 and 172 bar 1000 and 2500 PSI

STEERING COLUMNS (204-XXXX-XXX)

J acket Length 56 - 836 mm 2.2 - 33 inch

Horn Wire with and without with and without

Upper Ends 10 Upper End Types 10 Upper End Types

Customized Steering Columns

Char-Lynn columns can be custom built to yourexact specifications. The column and mountingflange is of a sturdy single weldment design. Thesecolumns have high thrust and side load capacitywith low shaft torsional friction. A tilt column isalso available.





Hydraulic C ircuitExplanation

Neutral Circuits:Open Centerand Open CenterPower Beyond

T

FixedDisplacementPump

Gerotor

Gerotor

L R

L R

PB P

P

T


To Auxilliary CircuitOpen CenterValves

Open Center

Sim plest, m osteconom ical system

U ses a fixeddisplacem ent pum p

In neutral positionpum p and tank areconnected

M ost suitable onsm aller type vehicles

Open Center Power Beyond

The pow er beyond steeringcontrol unit supplies steeringand auxiliary valve functions.The pow er beyond unit isused on m edium pressure,open center (fixeddisplacem ent pum p) system s.

W hen not steering, the pow erbeyond unit directs all inletflow to the auxiliary circuit.

H ow ever once steering isinitiated, part of the auxiliaryflow is diverted to steering.Since steering has priority, allflow , if required, w ill bediverted to steering. The tankport of the steering unit hasflow only w hen steering isoperated. Thus, flow out ofthe auxiliary (PB) port andthe tank port w ill fluctuate orstop depending on steeringinput.

The follow ing specialconsiderations should beaddressed w hen applyingpow er beyond steering:

Auxiliary valves(connected to PB ) m ustbe open center type.Slight bum p or kick m aybe felt in steeringw heel w hen auxiliaryfunctions are activatedduring steeringoperations.

Pum p flow not used forsteering is available atpow er beyond (PB )outlet, except atsteering stops w heretotal pum p flow goesover the system reliefvalve. Avoid auxiliaryfunctions that requireconstant flow w hilesteering.

Flow is only directed tothe tank port w hensteering is operated.Avoid system s w herereturn flow from tankport is used for auxiliaryfunctions.

Inlet pressure to thesteering unit w ill be thehigher of steeringsystem pressure orauxiliary valve pressure.

G enerally avoid

system s w here heavyuse of auxiliaryfunctions occur w hilesteering.

Applications

Law n and G ardenEquipm ent

U tility Vehicles






Neutral Circuits:Closed Center

Closed Center

U ses a pressurecom pensated variabledisplacem ent pum p

In neutral position

pum p and tank aredisconnected

M ost suitable on largeconstruction equipm ent

Valve OptionAClosed CenterSystem

PressureCompensatedPump

P

RL

T

P

RL

T

DirectMechanicalLink

Steering

ControlUnit

GerotorMeteringMechanism

with

NeutralBleed

Closed Center with

Neutral Bleed

Neutral Bleed Feature

Closed C enter SteeringControl U nits are availablew ith and w ithout neutralbleed feature. M ostapplications m ay not requirethe bleed feature, how ever,the m axim um tem peraturedifferential betw eencom ponents w ithin thesteering circuit m ust notexceed specification (50 F or

28 C ). O rder unit w ith thebleed feature if thetem perature differential m ayexceed this lim it. The neutralbleed feature allow s a sm allflow of fluid to pass throughthe unit w hen in neutral toreduce the therm aldifferential.

Typical applications w here

neutral bleed is required are:

Rem ote steeringposition from pow ersource.

Extended engine idleoperation w hen vehicleis parked.

H igh duty cycleoperation sharing acom m on reservoir w iththe steering circuit.

Applications

Construction Industry






Neutral Circuits:Load Sensing

Load Sensing Circuits

C har-Lynn load sensingpow er steering uses

conventional or load sensingpow er supplies to achieveload sensing steering. Theuse of a load sensingsteering unit and a priorityvalve in a norm al pow ersteering circuit offers thefollow ing advantages:

Provides sm oothpressure com pensatedsteering because loadvariations in thesteering circuit do notaffect axle response orm axim um steering rate.

Provides true pow erbeyond systemcapability by splittingthe system into tw oindependent circuits.Pressure transients areisolated in each circuit.O nly the flow requiredby the steeringm aneuver goes to thesteering circuit. Flownot required forsteering is available foruse in the auxiliary

circuits.

Provides reliable operationbecause the steeringcircuit alw ays has flowand pressure priority.

Char-Lynn load sensingsteering control units andpriority valves can be used w ithopen center, closed center orload sensing system s. U se inan open center system w ith afixed displacem ent pum p or aclosed center system w ith apressure com pensated pum p,offers m any of the features of aload sensing system . Excessflow is available for auxiliarycircuits.

Listed below are thecom ponents of a typical loadsensing control circuit and abrief application description.

PumpM ay be fixeddisplacem ent, pressurecom pensated,or flow and pressurecom pensated design.

Priority ValveSized fordesign pressure drop atm axim um pum p output flowrate and priority flow

requirem ents. The m inim umcontrol pressure m ust assureadequate steering flow rateand m ust be m atched w iththe steering control unit.

A dynam ic signal priorityvalve m ust be used w ith adynam ic signal steeringcontrol unit.

Steering Control UnitD esigned for specific ratedflow s and control pressures.It m ust be m atched w ith acontrol pressure in thepriority valve to obtainm axim um steering rates.H igher flow rates requirehigher control pressures.N eutral internal bleedassures com ponenttem perature equalization.

LS LineA LS line is alw aysneeded to sense pressuredow nstream from thevariable control orifice in thesteering control unit. This isbalanced by an internalpassage to the opposite sideof the priority control spool.

The total systemperform ance depends oncareful consideration of thecontrol pressure chosen andpressure drop in the C F line.

Steering Relief ValveM ust be factory set at least10 bar [145 PSl] above them axim um steering cylinderpressure requirem ent. M ostof the flow w ill be directedto the auxiliary circuit (EF)

w hen the relief setting isexceeded.

System Main ReliefValveA pressure reliefvalve for the auxiliary circuitand/or a m ain safety valve forthe protection of the pum p isrecom m ended and sized forthe m axim um pum p outputflow rate. If a m ain relief valveis used, it m ust be set abovethe priority circuit steeringrelief valve pressure setting.

Filter

Pump Prime Mover

MainRelief

ManualInput

Steering Cylinder

LoadSensingSteering Unit

T

LS

T P

L R

Priority Valve

High PressureCarryover

P

CF

EFDSLS PP

DynamicSignal

LS Load SensingDS D ynam ic SignalPP Pilot PressureCF C ontrol FlowEF Excess Flow







T

LS P

LS CF EF

RL

P

THigh PressureCarryovertoAuxiliary Circuit witOpen CenterValve(s

Fixed Displacement Pump

Load SensingSteeringSystem with FixedDisplacement Pump (Open CenterCircuit)

LoadSensing(DynamicSignal)SteeringControl Unit(non-loadreaction)

Priority Valve(DynamicSignal)

DynamicSignal

T LS P

LS CF EF

RL

T

P

AuxiliaryCircuit withLoad SensingValve(s)

Pilot Signalfrom AuxiliaryCircuit

Pressure and FlowCompensated Pump

Shuttle Valve

Load Sensing Steering System with Pressure and FlowCompensated Pump (ClosedCenter, Load SensingCircu

LoadSensing(DynamicSignal)SteeringControl Unit(non-loadreaction)

Priority Valve(Dynamic Signal)

DynamicSignal

Dynamic SignalOpen Center Pump

Dynamic SignalLoad Sensing Pump

Load Sensing CircuitsSignal Systems

Tw o types of load sensingsignal system s areavailableD ynam ic andStatic.

Dynamic SignalU sed form ore difficult applications.The dynam ic signal system soffer the follow ing benefits:

Faster steeringresponse.

Im proved cold w eatherstart-up perform ance.

Increased flexibility tosolve problem s relatedto system perform anceand stability.





T LS P

LS CF EF

RL

T

P

AuxiliaryCircuit withOpen CenterValve(s)

Fixed Displacement Pump

Load SensingSteering System withFixed Displacement Pump(Open CenterCircuit)

LoadSensing(StaticSignal)Steering

Control Unit(non-loadreaction)

Priority Valve(StaticSignal)

Static Signal

Static SignalOpen Center Pump

Static SignalU sed forconventional applicationsw here response or circuitstability is not a problem .The load sensing pilot lineshould not exceed 2 m eters[6 feet] in length.








Work Circuits:Non-Load Reactionand Load Reaction

P

RL

T

Closed CenterSystemNon-Load ReactionCircuit



SteeringControlUnit

Pressure and FlowCompensated Pump

Non-Load Reaction

A non-load reaction steeringunit blocks the cylinder portsin neutral, holding the axleposition w henever theoperator releases thesteering w heel.

Load ReactionA load reaction steering unitcouples the cylinder portsinternally (in the neutralposition) w ith the m etergear set. A xle forces arethen allow ed to return thesteering w heel to itsapproxim ate originalposition. C om parable toautom obile steering,gradually releasing thew heel m id turn w ill allowthe steering w heel to spin

back as the vehiclestraightens.

The cylinder system usedw ith load reaction unitsmust have equal oilvolume displaced in bothdirections. The cylindersshould be a parallel pair (asshow n) or one double rodend unit.Do not use with asingle unequal areacylinder system.

P

RL

T

OpenCenterSystemLoad ReactionCircuit



Steering

ControlUnit






Steering Unitsw ith IntegralValves

EF

1

2

3

5

4

6

Integral valves are availablefor the C har-Lynn steeringcontrol unit. Included are:Inlet Relief Valve, CylinderPort Shock Valves, LS-ReliefValve, and A nti-C avitationValves for cylinder ports. Inaddition, a M anual SteeringC heck Valve for lim itedm anual steering is included.

The integral valves elim inatethe need for a separatevalve block, and providesversatility to m eet anysteering circuit standard.

Valve Description:

1 Anti-cavitation checkvalve for cylinder ports(R & L) protects steeringcircuit against vacuum(cavitation) conditions.

2 Cylinder Port ReliefValves(R & L) protectshoses against pressure

surge created by groundforces on the steered axle.

3 Manual Steering CheckValveconverts unit to ahand operated pum p forlim ited m anual steering.Included in all units exceptSeries 20, 25, and 40.**

4 Inlet Relief Valvelim itsm axim um pressure dropacross the steering unitprotecting the steeringcircuit.

5 Inlet Check Valveprevents oil from returningthrough the steering unitw hen pressure on thecylinder side is greaterthan pressure on the inletside to prevent steeringw heel kick.

6 LS-Relief ValveLim itsm axim um pressure in thesteering circuit (LS unitsonly)

** Steering units w ith displacements larger than185 cm 3/ r [ 11. 3 i n3/ r] may req uir e a sepa rat epower source for limit ed operation.





Special Featuresand App lication

Manual Steering

Displacemencm3/r[in3/r]

[ 800]

[ 600]

[ 400]

[ 200]

0

0

27[20]

54[40]

81[60]

108[80]

136[100]

Manual Input TorqueNm [lb-ft]

[PSI]

1) Maximum flow less than 7,6 l/min [2GPM].

The above curves are intended as a design guide only.

[1000]

30-60RPM

10-15RPM

1-3RPM

2) Actual steering pressures required and manualsteeringcapabilities must be verified with vehicletesting.

4

966[5.9]5 9]

744

[4.5]4 5]

599

[3.6]3 6]

466

[2.8]2 8]

18585

[11.3]11 3]

14646

[8.9]8 9]

1606

[9.7]9 7]

2303

[14.1]14 1]

29595

[17.9]17 9]

3707

[22.6]22 6]

1202

[7.3]7 3]

96[5.9]74[4.5]

59[3.6]

46[2.8]

185[11.3]

146[8.9]

160[9.7]

230[14.1]

295[17.9]

370[22.6]

120

[7.3]

Description

The steering control unit canprovide steering flow w henthe pum p or engine fails. Itw ill pum p oil through them eter (gerotor) as theoperator applies input ortorque to the steering w heelw hich provides lim itedm anual steering.

This feature is available in allsteering m odels except forSeries 25 and 40.

Use of Graph

1. D eterm ine steering w orkport pressure required topreform the desiredsteering m aneuver fromvehicle test data. Thisdefines the approxim atem anual steering pressurelevel required. Find thisvalue on the vertical axis

and construct a horizontalline on the graph.

2. Find the input torque lim iton the horizontal axis.Follow this vertically untilit crosses the requiredpressure line of step 1.

3. The m axim um steeringunit displacem ent isidentified by the firstangled line to the left ofthis intersection.





Description

Eatons 2-Speed technologyoffers tw o operator-selectable m etered m odesat any tim e, w ith the touchof a button or the flip of asw itch, and provides theoperator flexibility tosignificantly im prove theoverall steering experience.2-Speed technology isavailable on the Series 10Steering C ontrol U nit (SC U ).

Dual Steering Modes

Typically, the gerotorbetw een the SC U housingand the shift valve is thesm aller gerotor (firstgerotor). The shift valve isactivated by the operator,w hich allow s or preventsflow to the second gerotor.A separate solenoid valve

provides the pressure pilotsignal to shift theaforem entioned valve. TheO EM w ill define and providethe operator sw itch toactivate the solenoid valve.

Metered Steering Mode 1 The steering unit operatesthe sam e as a traditionalhydrostatic steering controlunit. Steering (flow ) is afunction of steering w heelrotations (rpm ). M etered(gerotor) steering providesprecise, responsive, andsm ooth steering. A ll the

flow is m etered by the firstgerotor, resulting in agreater num ber of turnslock-to-lock. In case ofpressure loss, the shift valveautom atically prevents flowto the second gerotor andem ergency steering isavailable via the first gerotor.

Metered Steering Mode 2 The steering unit operatesthe sam e as a traditionalhydrostatic steering controlunit, except the flow ism etered for a com bineddisplacem ent of tw ogerotors. A s w ith M ode 1,steering (flow ) is a functionof steering w heel rotations.

A s the total displacem entper rotation is the sum ofthe tw o gerotordisplacem ents, the num berof turns lock-to-lock m ay besignificantly decreased.O perator effort is greatlyreduced during the w orkcycle. The num ber of turnslock-to-lock could go dow nto 0.5, w here the ratio ofthe tw o gerotordisplacem ents could varyfrom 1:1 to as high as 5:1,providing great flexibility inthe design.

Benefits

M anual steeringcapability in unpow eredm ode (em ergencysteering)

Steering flow is alw aysproportional to steeringspeed

A llow s for excellent

roadability and operatorselectable quick-steerfor w ork cycles

Features

O pen C enter, LoadSense

A ll Integral Valves

W ide A ngle

M ax System pressure:241 B ar [3500 psi]

Applications

All Ackerm an S teering

Tractors, Telehandlers,Sw eepers, ForestryEquipm ent, Backhoes,Loaders

Sprayers, C om bines,M otor G raders

Spe cial Featuresand Application

2-Speed





Special Featuresand Application

DualDisplacement

Description

The dual displacem entsteering control unit allow sm anufacturers of off roadvehicles to retain m anualsteering capabilities w hilereducing the num ber ofcom ponents in their system .B y using tw o displacem entsin one unit w e offer a better

solution to m anually steer avehicle in an unpow eredm ode w ithout the need of aback-up pow er system resulting in a m oreeconom ical m achine.

The dual displacem entsteering unit uses tw ogerotors and a pressurecontrolled logic valve. Thelogic valve sw itches betw eentw o displacem ents, onedisplacem ent for m anualsteering and the total of both

displacem ents for pow eredoperation. The logic valve isspring returned to thesm aller m anualdisplacem ent w hen inletpressure falls below 8 bar[120 psi]. A bove 8 bar [120psi] the logic valve connectsboth gerotors to provide fullpow ered displacem ent.

Manual steering capabilitiesin unpowered mode

Elim inates the need ofa back-up em ergencysystem .

Engages the sm alldisplacem ent in anunpow ered m ode andallow s m anual steering.

Allow s vehicles to m eetISO /TU V road regulationsw ithout the need of thecurrently usedem ergency system .

Performance in powered mode

Both gerotors areengaged to steer thevehicle.

Sam e perform ance asother C har-Lynnsteering units.

Additional Features

Steering circuit: LoadSensing D ynam ic Signal

M ax. system pressure:241 bar [3500 psi].

Valve options and otherfeatures: sam e as thoseavailable on Series 10(single displacem ent)units

DISPLACEMENT CHART:

Gerotor 1 Gerotor 1 and 2 Gerotor 1 Gerotor 1 and 2Manual displ. Powered displ. Manual displ. Powered displ.

in3/rev in3/rev cm3/rev cm3/rev

3.6 9.5 60 156

3.6 10.9 60 179

3.6 12.5 60 205

3.6 13.3 60 218

3.6 14.9 60 244

For any other displacement please see your Eaton Representative.

00 15

InputSpeed RPM

Manual 60 cm3/r[3.6 in3/r]Powered 244 cm3/r[14.9 in3/r]

Flow vs RPM (foreach operating mode)

SteeringFlowGPM

SteeringFlowl/min

30 45 60 75 90 60 105 1200

2

4

6

8

10

12

14

1618

20

22

24

26

28

30

0.5

1.0

1.5

2.5

3.0

3.5

4.0

4.5

5.0

5.5

6.5

6.0

7.0

7.5

Powered

Mode

P

o

w

e

e

d

o

d

e

Powered

Mode

Manual

Mode

a

n

u

a

l

o

d

e

Manual

Mode

2.0

T LS P

AddedGerotor

LogicValve

Manual Gerotor

RL




16/106

M anual SteeringSteering a vehicle w ith

loss of engine pow er m aynot be possible w ith alarge displacem entsteering control unit (SCU ).Q -Am p w ith m anualfeature has the sm allerdisplacem ent required form anual steering and hasthe additional flowrequirem ent of the largerdisplacem ent SCU forpow er steering.

Single Cylinder(U nequal area)

O n vehicles w ith one singleunequal area cylinder the

steering w heel turns lock tolock are m ore in onedirection than the other.W hen extending the rod onew ould get m ore turns thanw hen retracting it. Adifferent Q -A m p ratio w hileturning in one directionversus the other can beused to give an equalnum ber of turns lock to lockin each direction.

Eaton PatentedTechnologies

Q-Amp (FlowAmplification)for Load SensingCircuits

Pump

RotaryValve

Meter

Cylinder

SlowTurn

No Flow

Description

Q -A m p steering units havebuilt in variable orificesthat provide flow directly tothe cylinder w ithout goingthrough the gerotor section.The orifices do not openuntil after the gerotor beginsto rotate and then graduallyopen until the desired flow

is achieved w hich is

proportional to the flowgoing through the gerotor. Atypical Q -A m p unit has aratio of 1.6 : 1 w hich m eansthe flow of the cylinder is1.6 tim es the flow goingthrough the gerotor w henturning the steering w heelat m edium to fast speeds.(See m odel code for

available ratios.)

Covered by one or more of the follow ing U.S.and foreign Patents: 4759182, 4862690,4781219. Unequal area Q-Amp.

10

1

2

3TurnsLocktoLock

Ratio

1:1

2:1

1.6:1

4

5

6

20 30 40 50RPM

60 70 80 90 100

10 20 30 40 50RPM

60 70 80 90 100

Q-Amp Steering Control UnitSlow Turn

Features

Variable R atio

Pump

RotaryValve

Meter

Cylinder

FastTurn

RotaryValve

Meter

CylinderPump

FastTurn

Q-Amp Steering Control UnitFast Turn

Conventional Steering Control Unit

16 EATON C har-Lynn Steering Catalog C-STOV-MC001-E1 J uly 2006






Q-Amp (FlowAmplification)for Load SensingCircuits

Applications

A rticulated vehicles such asw heel loaders, log skidders,scrapers, trucks, and sim ilarvehicles can benefit fromthis feature.

W hile roading, a slowm ovem ent of the steeringw heel (input speed), w ill notovercorrect steering.Increasing input speed w illproduce the additionalsteering flow required toquickly change the vehiclesdirection.

For exam ple, operating logskidders in the w oodsrequires very quick steering.This sam e log skidder onthe road w ould be extrem elydifficult to steer a straightnorm al course. The variableratio feature provides goodsteering in both conditions.

C om bines, row crop tractorand large articulatedagricultural tractors also cabenefit from this featurew hen traveling dow na field. It w ill be easier tofollow row s or furrow s, anstill be able to m ake fastturns at the end of the row

Variable Ratio

W heel Loaders

Scrapers

A rticulated AG Tractors

A rticulated D um pers

M ine Trucks

Forestry Equipm ent

Rough Terrain Lift Trucks

Variable Ratio withManual Steering

AG Tractors

Sm all W heel Loaders

Rubber Tired Excavators

Sprayers

Site H andlers

G raders

Com bines






Wide Angle

Standard Steering ona 25 TonLoader

Steering Input (RPM)60 RPM CW

60 RPM CCW

Time (Seconds)

ComputerSimulation

J erk (g/sec)

J erk (g/sec)

0

4

8

0 1 2 3 4 6

-8

-4

Wide Angle Steering ona 25 TonLoader

Steering Input (RPM)60 RPM CW

60 RPM CCW

Time (Seconds)

J erk (g/sec)

J erk (g/sec)

0

4

8

0 1 2 3 4 6

-8

-4

125 ms

60 RPM

Flow

Time

WideA

ngle

Standard

Description

Steering units w ith w ideangle features have beendeveloped to significantlyreduce or elim inate the jerkym otion of vehicles w itharticulated steering system s.This has been accom plishedby increasing the m axim umdeflection of the spool

relative to thesleeve. Increasing thedeflection reduces the gain.This in turn reducesacceleration and jerk levelsand provides overallsm oother vehicleperform ance. The steeringstill responds fast enough sothe operator does not noticethe reduced gain.

Benefits

M inim izes jerkingm otion on m edium andlarge articulatedvehicles.

Jerk reducing valves andaccum ulators can beelim inated on m ostvehicles.

Avaliable on Series 10,Series 20 (standard),and Series 25.

Elim inates need forcushion valves

Applications

Articulated Vehicles

Wide Angle Steering Control Units Patent No. 5080135

These graphs show a computer simulation of the jerk levels and have been verified byactual vehicle tests.




19/106EATON Char-Lynn Steering Catalog C-STOV-MC001-E1 July 2006


Cylinder Damping

Description

Cylinder damping can helpsmooth the steering actionof large articulated vehiclessuch as loaders, scrapers,and skidders. These vehicleshave overhanging weightwith high inertial loads. Thisenergy is dissipated by thecylinder damping orificeswhich bleed a small amountof flow from the cylinderport to tank.

Cylinder Damping has 3different levels ofapplication. The number oflevels equal to the numberof Cylinder Damping (CD)orifices. This technology isavailable on Series 10,Series 20, Series 25, andSeries 40. Not all SCUscome with all 3 levels.

Features

Three levels engineered tofit your application.

Benefits

Reduces jerking motionon medium and largearticulated vehicles.

Available on thefollowing steeringcontrol units (Series 10,20, 25, 40).

Damps or stabilizesunstable systems.

ApplicationsLarge Articulated Vehicles

Wheel Loaders

Skidders

Scrapers

Flow Amplification without Cylinder Damping

Flow Amplification with Cylinder Damping

Steering Control Units with Cylinder DampingPatent No. 5080135






VersaSteer

Description

Eatons patentedVersaSteer technologyoffers operator-selectableM etered or Q uick Steeringm odes at any tim e, w ith thetouch of a button or the flipof a sw itch, and providesthe operator flexibility tosignificantly im prove the

overall steering experience.

Dual Steering Modes

Metered Steering Thesteering unit operates thesam e as a traditionalhydrostatic steering controlunit. Steering (flow ) is afunction of steering w heelrotations (rpm ). M etered(gerotor) steering providesprecise, responsive, andsm ooth steering.

Quick Steering G erotorless (quick) steeringprovides a m uch differenteffect, enabling the operatorto put the vehicle in full lockw hile only turning thesteering w heel a fewdegrees. This is achieved byhydraulically blocking theflow of oil to the gerotorw ith a shift valve. Fullsteering flow can beobtained by deflecting thesteering w heel 45 for aSeries 10 and 50 for a

Series 20. O perator effort isgreatly reduced during thew ork cycle.

Benefits

Provides steeringsystem cost savings byelim inating the need fora separate joystick

Available on Load Sensesteering system s

C om patible w ithIntegral Valves, Bolt-O n

Priority Valves, Q -A m pand Cylinder D am ping

Em ergency m anualsteering capability

M inor size increase can retrofit to existingvehicles

Sm oother steering w ithEaton P atented W ideA ngle technology.

Features

D ual steering m odes in

one integrated SteeringC ontrol U nit (SC U )

H igh pressure ratingand flow capabilities

C om patible w ith currentsteering options

Easily retrofit to existingvehicles

Proven base technology

Easy one-touch sw itch(O EM defined)

VersaSteer SystemComponents

Steering C ontrol U nit

Solenoid Shift Valve

Four 04 hoses

Electric Sw itch

Series 10 VersaSteer

Traditional Metered Steering Series 10 Quick Steering

Series 20 VersaSteer

SPECIFICATIONS

1. System Pressure R ating -

a. 241 Bar [3500 psi] - Series 10

b. 241 Bar [3500 psi] - Series 20

2. Back Pressure Rating - 21 Bar [305 psi]

3. Flow Rating

a. 15 gpm - Series 10

b. 25 gpm - Series 20

VersaSteer is covered underUS Patent No. 6,318,078






STC Direct Porting

W ith the Snap-To-C onnect(STC ) D irect Porting option,the fitting profile ism achined into the SC Uhousing, elim inating theneed for extra S TC fittings.This revolutionary andpatented porting technologyprovides leak-proof sealingand has operating pressure

capability exceeding450 0PSI (310bar).

STC D irect Porting isavailable w ith Series 5 andSeries 10 Steering C ontrolU nits.

Benefits

STC D irect Portsprovide a greatopportunity forsignificant cost savingscom pared to threadedfittings

Elim inates the need forassem bly tools during

installationElim inates installationvariability

Im proves ergonom icsreduces installer efforto connect

Im proves serviceabilit

H igh quality, leak-prooseal

Elim inates connectorleakage

C om pact design andoverall lighter w eight




22/10622 EATON Steering Catalog C-STOV-MC001-E1 May 2006

Steering ControlUnitsSeries 5

ProductDescription

The new Series 5 steeringcontrol units (SC U ) areexciting new productsdesigned for low flow , lowpressure applications.

The Series 5 units areavailable in tw o com pactdesigns:

Option 1:

Square H ousing (M ount)U nit w ith Side Ports

Option 2:

Round H ousing (M ount) U nitw ith End Ports

In addition to the installationflexibility provided by thetw o options above, this newfam ily of products has best-in-class steering feel andprovides crisp centering.These units also have betterefficiency (low er pressuredrop) than com petitive units.

Pow er Beyond M odelsO ptional pow er beyondsteering control units supplysteering and flow to auxiliaryvalve functions. The pow erbeyond unit is used in opencenter (fixed displacem entpum p) system s in them edium pressure range.W hen not steering, thepow er beyond unit directs allinlet flow to the excess flowport (pow er beyond) for usein the auxiliary circuit. O nce

steering is initiated, andsince steering has priority,inlet flow w ill be diverted tothe steering circuit asrequired. Flow out theexcess flow port (pow erbeyond) and tank port w illvary or stop depending uponthe steering requirem ent.The tank port of the steeringunit has flow only w hensteering is operating.

SPECIFICATIONS

Max. System Pressure 140 bar [2030 PSI]

Max. Back Pressure 21 bar [ 300 PSI]

Max. Flow 19 l/min [5 GPM]

Max. DifferentialBetween Steering Unit 28 Cand System Temperature 50 F

Max. System Operating Temperature 93C [200F]

Input TorquePowered -Standard 1,7 - 2,8 Nm @ 6,9 bar tank pressure

[15 - 25 lb-in @ 100 PSI tank pressure]Low 1,1 - 2,0 Nm @ 6,9 bar tank pressure

[10 - 17.5 lb-in @ 100 PSI tank pressure]Max. Non Powered 81,4 Nm [60 lb-ft]

Fluid Petroleum Based Fluids

Recommended Filtration ISO 18/13 cleanliness level

Port Options 9/16-18 SAE O-ring 06 STC3/8 BSP Straight thread ports

Check Valve for Manual Steering Yes

Optional Relief Valve Settingsbar [PSI] 40 [ 580]

50 [ 725]63 [ 914]70 [1015]80 [1160]90 [1305]100 [1450]125 [1812]

Option 1:Square Housingwith Side Portsrefer to Model Code, page 23

Option 2:Round Housingwith End Portsrefer to Model Code, page 24

Features

O pen C enter

Load Sensing

O pen C enterPow er Beyond

Integral C olum n

M anual SteeringC heck Valve

Inlet R elief ValveLoad Sense Relief Valve

Cylinder Relief Valve

A nti-C avitation Valve

Applications

Law n and G ardenEquipm ent

Turf Equipm ent

G olf C ourseM aintenanceEquipm ent

Lift Trucks

C om pact U tility Tractors




23/106EATON Steering Catalog C-STOV-MC001-E1 May 2006


Model Code OrderingInformation

The follow ing 30-digit coding system has been developed toidentify all of the configuration options for the Series 5steering control units. U se this m odel code to specify a unitw ith the desired features. A ll 30-digits of the code m ust bepresent w hen ordering. You m ay w ant to photocopy them atrix below to ensure that each num ber is entered in thecorrect box.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

A B R 0 A A 0 1 0 BC A

Nos Feature Code Description Nos Feature Code Description

1,2,3 Product Series AB R Series 5 Steering Control U nit

4 N om inal Flow 1 11 l/m in [3 G P M ]Rating B 19 l/m in [5 G PM ]

5 Inlet Pressure C 140 bar [2030 PSI]Rating

6 Tank Pressure A 10 bar [150 PSI]Rating B 21 bar [300 PSI]

7-8 D isplacem ent 35 31.5 cm 3/r [1.92 in3/r]37 39.5 cm 3/r [2.41 in3/r]39 50.8 cm 3/r [3.10 in3/r]41 63.1 cm 3/r [3.85 in3/r]43 73.8 cm 3/r [4.50 in3/r]46 100 cm 3/r [6.10 in3/r]48 120 cm 3/r [7.33 in3/r]

9 Flow A m plification 0 N o ne

10 N eutral C ircuit A O pen C enter

B O p en C enter, Pow er B eyondF Load Sensing, Dynam ic signal

11 Load C ircuit A N on-Load R eaction

12,13 Valve O ptions 01 M anual Steering Check Valve04 Inlet Check Valve, M anual

Steering C heck Valve05 Inlet Relief Valve,

M anual Steering C heck Valve12 Cylinder Relief Valve,

A nti-C avitation Valve,Inlet Relief Valve,Inlet C heck Valve,M anual Steering C heck Valve.

13 Cylinder Relief Valve,Anti-cavitation Valve, Inlet CheckValve, Load Sensing Relief Valve,M anual Steering Check Valve

14,15 Integral Inlet 00 N oneRelief Valve 18 40 bar [580 PSI]Setting 1J 50 bar [725 PSI]

1Z 63 bar [914 P SI]26 70 bar [1015 P SI]2G 80 bar [1160 P SI]2T 90 bar [1305 P SI]34 10 0 bar [1450 P SI]3W 125 bar [1812 P SI]

16,17 Cylinder Relief 00 NoneSetting 37 103 bar [1490 PSI]

42 130 bar [1890 P SI]55 185 bar [2680 P SI]68 200 bar [2900 P SI]

18,19,20,21 Ports and 4A A N Square 4 x 9/16 SA E Ports,

M ounting Threads M 10 x 1,5 C olum n M ountinThreads (U se w ith O pen C en

4AKN Square 5 x 9/16 SAE Ports,M 10 x 1,5 C olum n M ountinThreads (U se w ith E xcess F

4AEN Square 5 x 9/16 SAE Ports,M 10 x 1,5 C olum n M ountinThreads (U se w ith Load S en

U AA N Square 4 x -06 STC D irectPorts, M 10 x 1,5 C olum nM ounting Threads (U se w ithO pen Center)

U BN N Square 5 x -06 STC D irectPorts, M 10 x 1,5 C olum nM ounting Threads(U se w ith Excess Flow )

U BPN Square 5 x -06 STC D irectPorts, M 10 x 1,5 C olum nM ounting Threads(U se w ith Load Sense)

YAAN Square 4 x G .375 BSP StriaThd. Ports, M 10 x 1,5 C olumM ounting Threads(U se w ith O pen C enter)

YBR N Square 5 x G .375 BSP StriaThd. Ports, M 10 x 1,5 C olumM ounting Threads(U se w ith Load Sense)

22 Input Torque 1 Low *3 Standard

23 Fluid Type A See Eaton TechnicalB ulletin 3-401

24 Special Application 0 None25,26 Special Feature A A N one

27 Paint 1 B lack Prim er

28 Identification 0 E aton P roduct N u m ber onN am eplate

29 M echanical A Tapered 17.919m m (.7055in)Interface diam eter, .083:1 and serrated

17.5 (.688) diam eter, 40 toothM 16x1.5-6g, Extension length65.02 (2.56)

D Internal involute spline12 to16/32 D P, 30 degree PA

30 Eaton Assigned B Assigned Design CodeD esign C ode

* All low torque units need approval from an Eaton Steering Engineer.

Square Housing with Side Ports - Option 1







The follow ing 30-digit coding system has been developed toidentify all of the configuration options for the Series 5 steeringcontrol units. U se this m odel code to specify a unit w ith thedesired features. A ll 30-digits of the code m ust be present w henordering. You m ay w ant to photocopy the m atrix below to ensurethat each num ber is entered in the correct box.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

A B R 0 A 0 0 A 0 1 0 B A


1,2,3 Product Series AB R Series 5 Steering Control U nit

4 N o m inal Flow 1 11 l/m in [3 G P M ]R ating B 19 l/m in [5 G PM ]

5 Inlet PressureR ating C 140 bar [2030 PSI]

6 Tank Pressure A 10 bar [150 PSI]R ating

7-8 D isplacem ent 35 31.5 cm 3/r [1.92 in3/r]37 39.5 cm 3/r [2.41 in3/r]39 50.8 cm 3/r [3.10 in3/r]41 63.1 cm 3/r [3.85 in3/r]43 73.8 cm 3/r [4.50 in3/r]46 100 cm 3/r [6.10 in3/r]48 120 cm 3/r [7.33 in3/r]

9 Flow A m plification 0 N o ne

10 N eutral C ircuit A O pen C enterB O p en C enter, Pow er B eyondC C losed C enterF Load Sensing, Dynam ic signal

11 Load C ircuit A N on-Load R eaction

12,13 Valve Options 01 M anual Steering Check Valve04 Inlet Check Valve, M anual

Steering C heck Valve05 Inlet Relief Valve,

M anual Steering C heck Valve12 Cylinder Relief Valve,

A nti-cavitation Valve,Inlet Relief Valve,Inlet Check Valve,M anual Steering C heck Valve.

14,15 Integral Inlet 00 N one

Relief Valve 18 40 bar [580 PSI]Setting 1J 50 bar [725 PSI]

1Z 63 bar [914 P SI]26 70 bar [1020 P SI]2G 80 bar [1160 P SI]2T 90 bar [1310 P SI]34 100 bar [1450 P SI]3W 125 bar [1812 P SI]4C 140 B ar [2030 P SI]

16,17 Cylinder Relief 00 N oneSetting

18,19,20,21 Ports and VAA H Round 4 x 9/16 SAE Ports,

M ounting Threads M 6 x 1,0 C olum n M ountingThreads (U se w ith O pen Center)

VAKH Round 5 x 9/16 SAE Ports,M 6 x 1,0 Colum n M ountingThreads (U se w ith Excess Flow )

VAEH Round 5 x 9/16 SAE Ports,M 6 x 1,0 Colum n M ounting

W AA H Round 4 x -06 STC D irect Ports,M 6 x 1,0 Colum n M ountingThreads (U se w ith O pen Center)

W BN H Round 5 x -06 STC D irect Ports,M 6 x 1,0 Colum n M ountingThreads (U se w ith Excess Flow )

W BP H Round 5 x -06 STC D irect Ports,M 6 x 1,0 Colum n M ountingThreads (U se w ith Load S ense)

22 Input Torque 1 Low *3 Standard


24 Special Application0 None

25,26 Special Feature A A N one

27 Paint 1 B lack Prim er


29 M echanical A Tapered 17.919m m (.7055in)Interface diam eter, .083:1 and serrated

17.5 (.688) diam eter, 40 tooth,M 16x1.5-6g, Extension length65.02 (2.56)

D Internal involute spline12 tooth,

16/32 D P, 30 degree PA

30 Eaton Assigned B Assigned D esign CodeD esign C ode

* All low torque units need approval from an Eaton Steering Engineer.* * Plug-O ports rated to 103 bar [1500PSI]

Round Housing with End Ports - Option 2




25/106

Option 1:Square Housing with Side Ports

refer to Model Code, page 23


InstallationDrawing

Relief Valve/CheckorManual Check

Relief Valve/Check Manual Check

View of Gerotor Section

GerotorSeal

Cylinder Relief Valve Anti-Cavitation Valve Inlet Check Valve

Housing PinBearing, Ball Drive SpacerPlate EndCapO-ring

BearingRace

ShaftSeal

DustSeal

CenteringSprings Sleeve Spool Gerotor

Sectional Drawing

29,18[1.149]

58,37[2.298]

58,37[2.298]

29,18[1.149]

4X M10 x 1.5-6H15,2 [.60] Min

48.26+0.13[1.900+.005]

38,4

[1.51]MAX

78,5[3.09]MAX

40,6[1.60] MAX

Involute Spline12 Tooth 16/32 D.P.30P.A. PER SPCDS-023-2

44,4 [1.75] Dia.

58.37[2.298]

EATON Steering Catalog C-STOV-MC001-E1 May 2006 25

Side View

Displacement Dim. A Max.Code cm3/r[in3/r] mm[inch]

35 31.5 [1.92] 123.4 [4.86]

37 39.5 [2.41] 125.2 [4.93]

39 50.8 [3.10] 124.2 [4.89]

41 63.1 [3.85] 126.2 [4.97]

43 73.8 [4.50] 128.0 [5.04]

46 100.0 [6.10] 132.3 [5.21]

48 120.0 [7.33] 135.4 [5.33]




26/106

VIEW B

D

D

C

C

311 10 58 26

7

VIEW B

23

21

22

1516

9,1[.36] MAX

69,850,05[2.750.002] Dia.

28,6[1.126] MAX Dia.

25,7[1.01] MAX Dia.

A

9,9[.39] MIN

5,10.8[.20.03] 8,9

[.35] MIN

Additional Port

Tank Port5X .5625-18UNF-2BSAEO-Ring Port

Left Port

Pressure Port

Right Port

8,90,5[.35.02]

27,90,5[1.10.02]

26,40,5[1.04.02]

19,80,5[.78.02]

13,70,5[.54.02]

23,60,5[.93.02]

11,40,5[.45.02]

20,30,5[.80.02]

14,50,5[.57.02]

80,5[3.17] MAX

80,5[3.17] MAX

44,4[1.75] MAX

59,00[2.323] Dia.

4 x M6 x 1.0-6H

12,2 [.48] Min. Depth

InvoluteSpline12 Tooth 16/32 D.P.30P.A.

26 EATON C har-Lynn Steering Catalog C-STOV-MC001-E1 J uly 2006

Option 3: Square Housing with End Portsrefer to Model Code, page 24


InstallationDrawing

Option 2:Round Housing with End Ports

Sectional Drawing

11 Pin

10 Sleeve

8 D rive

3O -ring

5 G erotor

2 End cap

22 D ust seal

16 Bearing

15 Race

21 Q uad seal

23 Retaining ring

7 W ear plate

6 housing

Displacement Dim. A Max.cm3/r[in3/r] mm[inch]

31.5 [1.92] 135.1 [5.32]

39.5 [2.41] 137.2 [5.40]

50.8 [3.10] 136.1 [5.36]

63.1 [3.85] 137.9 [5.43]

73.8 [4.50] 139.7 [5.50]

100 [6.10] 144 [5.67]

120 [7.33] 147.3 [5.80]






Performance Data

Neutral Pressure Drop

Inlet to Auxiliary

Relief Valve Curve

8

6

4

2

0

4

[1]

7

[2]

11

[3]

15

[4]

0

L/min [GPM]

bar

[120]

[ 80]

[ 40]

[ 0]

[PSI]11 L/min [3GPM] Rated Round Unit

GPM

bar P

00

L/min

1 3 5 7 9 11 13 15

1 2 3 4

35

45

55

65

75

95

85

105

0500

600

700

800

900

1000

1100

1200

1300

1400

1500

1600

1700

1800

115

125

1900135

2000

Input Torque Curve

Percent Deflection

in-lbNm

0 10 20 30 40 50 60 70 80 90 100

101

2

3

15

20

25

Low torqueStandard torque

2

6

14

10

8[2]

11[3]

15[4]

19[5]

23[6]

[ 0]

[ 50]

[100]

[150]

[200]

[250]bar [PSI]

L/min [GPM]

19 L/Min (5GPM) Rated Unit





Internal InvoluteSpline12 Tooth 16/32 D.P.30P.A.

9,1[.36] MAX

25,7[1.01] MAX Dia.

69,850,05[2.750.002] Dia.

A

9,9[.39] MIN

5,10,8[.20.03] 8,9

[.35] MIN

28,6[1.126] MAX Dia.

Tapered 17.919mm (.7055in)diameter, .083:1 and serrated17.5 (.688) diameter, 40 tooth,M16x1.5-6g, Extension length65.02 (2.56)

M16 x 1.5-6g

.0831:1

65.0 0.5[2.56 .02]

9.1[.36] MAX

25.7[1.01] MAX

19.2[.755] MAX

14.27 0.25[.562 .010]

29.36 0.25[1.156.010] 17.919

[.7055]


Integral ColumnOption

Integral ColumnOption Available inSquare Housing withSide Ports, and RoundHousing with EndPorts

40 Tooth Serrated IntegralColumn Option (Shown onRound Housing with EndPorts)

12 Tooth Internal Spline

Standard Mechanical Interface(Shown on Round Housingwith End Ports)




29/106


Product Description

Eatons Series 10 SteeringC ontrol U nit (SC U ) facilitateshydraulic fluid flow like noother unit on the m arket.This highly-engineered productis the ultim ate SC U form id-range flow applications.

Benefits

The new Series 10 SC Uhas an unprecedented,continuous pressurerating of 275 bar (40 00psi), m aking it ideal forheavy-duty equipm ent,such as constructionand agriculturalm achinery.

Its high-pressurerating reduces overallequipm ent costs, sincesm aller cylinder sizes

can be assigned intothe system .

The new Series 10incorporates provenEaton technologies. A ninternal, balancedarchitecture and a w ide-w alled sleeve that is40% thicker thanstandard designs offerincreased performanceduring transientpressure conditions.

Features

O pen C enter

Pow er B eyond

Closed C enter

Load Sensing

Integral Valves

Q -A m p

2-Speed

D ual D isplacem ent

Versa S teer

W ide A ngle

Cylinder D am ping

Applications

Construction M achinery

Agriculture M achinery

H eavy-D uty Equipm entM arine

Forestry M achinery

M ining Equipm ent

SPECIFICATIONS

Max. System Pressure 275 bar [4000 PS

Max. Back Pressure 21 bar [305 PS

Rated Flow Low 7,6 - 15 l/min [ 2 - 4 GP

Medium 15 - 30 l/min [ 4 - 8 GP High 30 - 61 l/min [ 8 - 16 GP Low (with Q-Amp) 8 - 19 l/min [ 2 - 5 GPM Medium (with Q-Amp) 19 - 38 l/min [ 5 - 10 GP High (with Q-Amp) 38 - 76 l/min [10 - 20 GP

Max. DifferentialBetween Steering Unitand System Temperature 28 C [50

Max. SystemOperating Temperature 93C [200

Input TorquePowered 1,1-2,8 Nm @ 6,9 bar back pressu

[10-25 lb-in @ 100 PSI back pressuNon-Powered 136 Nm [100 lb-

Fluid See Eaton Technical Bulletin 3-4

Recommended Filtration ISO 18/13 cleanliness lev

PORT SIZES:

Work Ports (4) Load Sense (LS) Port (1)*

3/4-16 (SAE) 7/16-20

M18 x 1,5 - 6H M12 x 1,5 - 6H

G 1/2 (BSP) Straight Thread G 1/4 (BSP) Straight Thread

STC Dash 08** STC Dash 06**

*Top or side when applicable**STC Ports, Aeroquip patented, feat ure snap to connect technology

EATON Steering Catalog C-STOV-MC001-E1 May 2006




30/10630 EATON Char-Lynn Steering Catalog C-STOV-MC001-E1 July 2006


Model CodeOrderingInformation

The following 32-digit coding system has been developed toidentify all of the configuration options for the Series 10

steering control units. Use this model code to specify a unitwith the desired features. All 32-digits of the code must bepresent when ordering. You may want to photocopy thematrix below to ensure that each number is entered in thecorrect box.

1,2,3 Product Series ADR Series 10 Steering ControlUnit

4 Unit Type A StandardB Dual DisplacementC Wide AngleD 2-Speed

E 2-Speed with Wide AngleG Dual Displacement with Wide

Angle

V Versa Steer, Wide Angle

5 Nominal Flow Rating 1 11 l/min [3 GPM](Open Center)

2 23 l/min [6 GPM](Closed Center and LS)

3 45 l/min [12 GPM](OC, CC, and LS)

4 19 l/min [5 GPM](Q-Amp)



7 23 l/min [6 GPM](Open Center)

6 Inlet Pressure Rating 1 276 bar [4000 PSI](Loadsensing and closed center)

2 207 bar [3000 PSI](Open center)

7 Return Pressure A 21 bar [305 PSI] Max.Rating (standard rating*)

B 10 bar [145 PSI] Max.

8-9 Displacement 01 352 [21.5] / 60 [3.6]cm3/r [in3/r] 02 218 [13.3] / 60 [3.6]Dual Displacement 03 290 [17.7] / 60 [ 3.6]Combined/Manual 04 440 [26.8] / 146 [8.9]

05 231 [14.1] / 85 [5.2]

8-9 Displacement 40 60 [3.6]

cm3/r [in3/r] 43 75 [4.5]45 95 [5.9]48 120 [7.3]50 145 [8.9]51 160 [9.7]52 185 [11.3]54 230 [14.1]57 295 [17.9]59 370 [22.6]61 460 [28.2]64 590 [35.9]66 740 [45.1]

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32

A D R A A A AA 01AA

1-8 GPM

8-16 GPM

* 12 GPM open center requires 145psi back pressure** All Q-amp applications need approval from an Eaton Applications Engineer

10 Flow Amplification** A None (No Q-Amp)B 1.6 : 1.0 RatioC 1.6 : 1.0 Ratio

(with Manual Steering)E 2.0 : 1.0 Ratio

(with Manual Steering)G 1.3 : 1.0 Ratio

(with Manual Steering)

Use with closed center orload sensing only.

11 Neutral Circuit A Open CenterC Closed CenterD Load Sensing, Static SignalE Load Sensing, Dynamic Signal

F Open center withPower Beyond

12 Load Circuit A Non-Load ReactionB Load Reaction (Open Center

3,8 - 30 l/min [1 - 8 GPM] Only

D Non-Load Reaction,Cylinder Damped

13,14 Special Spool/Sleeve 00 NoneModification

15,16 Valve OptionsManual Load Inlet Cylinder Anti- InletSteering Sensing Check Relief Cavitation ReliefCheck Relief Valve Valve Valve Valve

01

02

03

04

05

06

07

08

09

10

11

Continued on next page





31/106

EATON Steering Catalog C-STOV-MC001-E1 May 2006


Model CodeOrderingInformationContinued

17,18 Inlet or Load Sense 00 N oneRelief Valve 18 124 [1800]bar [PSI] 19 131 [1900]

20 138 [2000]21 145 [2100]22 152 [2200]23 158 [2290]24 165 [2390]25 172 [2490]26 179 [2600]

27 186 [2700]28 193 [2800]29 200 [2900]30 207 [3000]31 214 [3100]32 220 [3190]33 227 [3290]34 234 [3390]35 241 [3500]36 248 [3600]37 255 [3700]38 262 [3800]39 269 [3900]40 276 [4000]99 136 [1970]

19,20 Cylinder Relief Valve 00 N one

bar [PSI] 23 158 [2290]** C ylinder R elief 24 165 [2390]setting recom m en- 25 172 [2490]dation is 870 PSI 26 179 [2600](60 bar) above 27 186 [2700]steering inlet/load 28 193 [2800]sense pressure. 29 200 [2900]

30 207 [3000]31 214 [3100]32 220 [3190]33 227 [3290]34 234 [3390]]35 241 [3500]36 248 [3600]37 255 [3700]38 262 [3800]

39 269 [3900]40 276 [4000]41 283 [4100]42 289 [4190]43 296 [4290]44 303 [439045 310 [4500]46 317 [4600]47 324 [4700]48 331 [4800]49 338 [4900]

21,22,23,24 Ports and A A A A 4 x 3/4-16 (SA E) PortsM ounting N one (N o Additional Port)Threads 2 x M 12 M ounting Threads

Port Face4 x M 10 M ounting ThreadsM ounting Face

A A BA 4 x 3/4-16 (SA E) Ports7/16-20 Load Sensing Port on S2 x M 12 M ounting ThreadsPort Face4 x M 10 M ounting ThreadsM ounting Face

A AC A 4 x 3/4-16 (SA E) Ports7/16-20 Load Sensing Port PortFace2 x M 12 M ounting ThreadsPort Face4 x M 10 M ounting ThreadsM ounting Face

BA AA 4 x M 18 x 1,5 - 6H M etricO -ring PortsN one (N o A dditional Port)2 x M 12 M ounting ThreadsPort Face4 x M 10 M ounting Threads

M ounting Face

BA DA 4 x M 18 x 1,5 - 6H M etricO -ring PortsM 12 x 1,5 - 6H Load S ensing Poon Side2 x M 12 M ounting ThreadsPort Face4 x M 10 M ounting ThreadsM ounting Face

BA EA 4 x M 18 x 1,5 - 6H M etricO -ring PortsM 12 x 1,5 - 6H Load S ensing PoPort Face2 x M 12 M ounting ThreadsPort Face

4 x M 10 M ounting ThreadsM ounting Face

C A A A4 x G 1/2 (B SP) Straight ThreadPortsN one (N o A dditional Port)2 x M 12 M ounting ThreadsPort Face4 x M 10 M ounting ThreadsM ounting Face

C ontinued on next page






21,22,23,24 Ports and C A FA 4 x G 1/2 (B SP ) Straight ThreadM ounting PortsThreads G 1/4 (BSP) LS Straight Thread Port(continued) on Side

2 x M 12 M ounting Threads PortFace4 x M 10 M ounting ThreadsM ounting Face

C AG A 4 x G 1/2 (B SP ) Straight ThreadPortsG 1/4 (B SP) LS Straight Thread Porton Port Face2 x M 12 M ounting Threads PortFace4 x M 10 M ounting ThreadsM ounting Face

DAA A D ash 08 STC Ports ***N one (N o A dditional Port)2 x M 10 M ounting Threads PortFace4 x M 10 M ounting ThreadsM ounting Face

DAH A D ash 08 STC Ports ***D ash 06 S TC Port on S ide2 x M 10 M ounting Threads Port

Face4 x M 10 M ounting ThreadsM ounting Face

DAJA D ash 08 STC Ports ***D ash 06 STC Port Face2 x M 10 M ounting Threads PortFace4 x M 10 M ounting ThreadsM ounting Face

25 M echanical A Internal Involute Spline,Interface 12 Tooth 16/32 D P 30 PA

26 Input Torque 3 Standard


28,29 Special Features A A N one

30 Paints and Packaging 1 Black Prim er

31 Identification 0 Eaton Product N um ber onN am eplate

32 Eaton Assigned B Assigned Design CodeD esign C ode

Housing

Release SleeveSTC Hose/Connector

Retaining Ring

Backup Washer

O-ring

STC Port

Dash 08 Port Face (4)

Dash 06 LS Port Side (1)

STCAeroquip

Patent numbers: 5,553,8955,226,6825,570,910



** * STC wi th inlet check requires threaded adapter. Contact your Eaton Account Representative for assistance.

Nos Feature Code Description





56,1[2.21]*

38,61/38,41[1.52/1.480]

8,89/8,39[.350/.330]

83,8[3.30]Dia. M

63,25/62,49[2.490/2.460]

94,0 [3.70] Max.

47,8[1.88]

48,8[1.92]Max.

94,0[3.70]Max.

45,0/44,0[1.77/1.73]Max.

58,67/58,17[2.310/2.290]

103,6[4.08]

Max.

12 Tooth InvoluteSpline16/32 D.P. 30P.A.14,2 [.56] Deep

45

Column MountingThread x 15,2 [.60]Deep on 82,5 [3.25]Dia. Bolt Circle

44,45/44,34[1.750/1.746]Dia.

2,05/3,36 [.081/.132]

Left

Tank Pressure

Right

Port Mounting Thread x 24,1 [.95] Min. Deep (2)

C

D

56,13/55,37 [2.210/2.180]

8,2 [.32] Max.

7,4/5,4 [.29/.21]Spline

10,2 [.40] Min. Depth (7,1 [.28] Max.Mating Spline Depth)

37,08/36,32 [1.460/1.430]

63,12/62,62 [2.485/2.465]

22,48/21,98[.885/.865]

44,96/43,94[1.770/1.730]

83

[3DM

60,51/59,4[2.382/2.3

Load SensingPort Face

Load Sensing Side Port

Load SensingSide Port

* LS side portlocation chanwith a LSR

PORT A ND MOU NTING THREA D COMBINATIONS

Column Load PortPort Mounting Sensing* Mounting

Thread Port Thread

3/4 -16 M10 x 1,5-6H 7/16 - 20 M12 x 1,75-6H

M18 x 1,5-6H M10 x 1,5-6H M12 x 1,5-6H M12 x 1,75-6H

STC M10 x 1,5-6H STC M12 x 1,75-6H

G 1/2 (BSP) M10 x 1,5-6H G 1/4 (BSP) M12 x 1,75-6H

* Load Sensing Units Only.

Displacementcm3/r DimensionC DimensionD[in3/r] mm[in.] mm[in.]

60 [ 3.6] 10,2 [ .40] 138,1 [5.44]

75 [ 4.5] 10,2 [ .40] 138,1 [5.44]

95 [ 5.9] 13,2 [ .52] 141,1 [5.56]

120 [ 7.3] 16,5 [ .65] 144,4 [5.69]

146 [ 8.9] 20,1 [ .79] 148,0 [5.83]

159 [ 9.7] 21,8 [ .86] 149,9 [5.90]

185 [11.3] 25,4 [1.00] 153,3 [6.04]

231 [14.1] 31,7 [1.25] 159,7 [6.29]

293 [17.9] 40,4 [1.59] 168,3 [6.63]

370 [22.6] 50,8 [2.00] 178,7 [7.04]

462 [28.2] 63,5 [2.50] 191,4 [7.54]

588 [35.9] 80,8 [3.18] 208,8 [8.22]

739 [45.1] 101,6 [4.00] 229,6 [9.04]


Installation Drawing





Steering C ontrolUnitsSeries 10

Sectional Drawingand Integral Valves

BBInlet

ReliefValve

FFLoadSenseRelief

Valve

AAInlet Check Valve

CCInternalCheckValve forLimitedManualSteering

EEAnti-Cavitation Valves forCylinderPorts

DDCylinderPortShock Valves

or

DD

CC

BB

AA

EE

FF





Steering C ontrolUnitsSeries 10

Performance Data

4 6 8 10 12 14 16 18

[2000]140

210

280

350

[3000]

[4000]

[PSI]bar

FlowGPM

Flow l/min

Legend* P1(23)

P2(27)

P3(30)

P4(34)

[5000]

1 2 3 4 5

*The examples above are 4 of 27 pressure settings shown inmodelcode page 30 Position 19, 20

Cylinder Relief Valve

Pressure D rop versus Flow

Inlet Relief Valve


Anti-Cavitation Valve


[1000]

[1500]

[2000]

[2500]

[3000]

[PSbar

FlowGPM

Flow l/min

P1 P2

0 5 10

100

70

130

160

190

220

0 10 20 30 40

**The examples above are 2 of 24 pressure settingsshown in model code page 30 Position 17, 18

Legend**

bar

8

6

4

2

0

12

10

0

0 2 4 6 8 10 12 14 16

[ 0]

[ 50]

[100]

[PSI]

FlowGPM

Flow l/min

[150]

1 2 3 4 0 10 20 30 40 50 60 70 80 90 100

Percent Deflection

0

4

8

12

16

20

24

28

32

lb-

Standard Torque

Nm

1

0

2

3

Input Torque





Steering ControlUnitsSeries 10 DualDisplacement

InstallationDrawing

56,1[2.21]*

38,61/38,41[1.52/1.480]

21,1[.83]

8,89/8,39[.350/.330]

63,25/62,49[2.490/2.460]

94,0 [3.70] Max.

47,8[1.88]

48,8[1.92]Max.

12 ToothInvoluteSpline16/32 D.P. 30P.A.14,2 [.56] Deep

45

44,45/44,34[1.750/1.746]Dia.

2,05/3,36[.081/.132]

Left Tank PressureRight

Port Mounting Thread x 24,1 [.95] Min. Deep (2)

BA

56,13/55,37 [2.210/2.180]

8,2 [.32] Max.

7,4/5,4 [.29/.21]Spline

10,2 [.40] Min. Depth (7,1 [.28] Max.Mating Spline Depth)

37,08/36,32 [1.460/1.430]

63,12/62,62 [2.485/2.465]

22,48/21,98[.885/.865]

44,96/43,94[1.770/1.730]

83,8[3.30]Dia.Max.

60,51/59,49[2.382/2.342]

Load SensingPort Face

Load Sensing Side Port

Load Sensing/PowerBeyond Side Port

Gerotor1

Gerotor2

29,7[1.17]

16,3 [.64] 80,3 [3.16]

C D

Column MountingThread x 15,2 [.60]Deep on 82,5 [3.25]Dia. Bolt Circle

25.7

ManualDisplacement DimensionCcm3/r[in3/r] mm[in.]

Gerotor1

60 [ 3.6] 10,2 [ .40]

60 [ 3.6] 10,2 [ .40]

60 [ 3.6] 10,2 [ .40]

60 [ 3.6] 10,2 [ .40]

60 [ 3.6] 10,2 [ .40]

Displacement DimensionDcm3/r[in3/r] mm[in.]

Gerotor2

95 [ 5.9] 13,2 [ .52]

120 [ 7.3] 16,5 [ .65]

145 [ 8.9] 20,0 [ .79]

160 [ 9.7] 21,8 [ .86]

185 [11.3] 25,4 [1.00]

PoweredDisplacement DimensionB DimensionAcm3/r[in3/r] mm[in.] mm[in.]Gerotor1 and 2

156 [ 9.5] 146,5 [5.77] 182,9 [7.20]

179 [10.9] 146,5 [5.77] 186,2 [7.33]

205 [12.5] 146,5 [5.77] 189,7 [7.47]

218 [13.3] 146,5 [5.77] 191,5 [7.54]

244 [14.9] 146,5 [5.77] 195,1 [7.68]

PORT A ND MOU NTING THREA D COMBINATIONS

Port ColumnMounting Load Sensing* Port MountingThread Port Thread

3/4 -16 M10 x 1,5-6H 7/16 - 20 M12 x 1,75-6H

M18 x 1,5-6H M10 x 1,5-6H M12 x 1,5-6H M12 x 1,75-6H

STC** M10 x 1,5-6H STC** M12 x 1,75-6HG 1/2 (BSP) M10 x 1,5-6H G 1/4 (BSP) M12 x 1,75-6H

*Load Sensing Units Only. ** See Page 32 (lower r ight).





SteeringControl UnitsSeries 20

ProductDescription

SPECIFICATIONS

Max. System Pressure 241 bar [3500 PSI]

Max. Back Pressure 10 bar [145 PSI]

Rated Flow 95 l/min [25 GPM]

Max. Flow 125 l/min [33 GPM]

Max. DifferentialBetween Steering Unit 28 Cand System Temperature 50 F

Max. SystemOperating Temperature 93C [200 F]

Input TorquePowered 1,1-2,8 Nm @ 6,9 bar back pressure

[10-25 lb-in @ 100 PSI back pressure]Non-Powered 136 Nm [100 lb-ft]

Fluid See Eaton Technical Bulletin 3-401

Recommended Filtration ISO 18/13 cleanliness level

The S eries 20 steeringcontrol unit continuesEatons tradition ofinnovative design and highquality that began w ith thefirst fluid linked pow ersteering system .

You can count on thissteering unit to provide thesam e sm ooth, predictablesteering as the C har-Lynnsteering units that providedependable, trouble-freesteering on applicationsaround the w orld.

Provides m uchsmoother steeringfunction by m inim izingjerky m otion onarticulated vehicles.

Jerk-reducing valves andaccum ulators can beelim inated on m ost

vehicles, providingcustom er savings throughfew er com ponentsrequired and reducedsystem cost.

Symmetrical valvingprovides passagew aysand valving that areequally placed, andpressure areas that arestaged for m inim uminternal leakage. Thisresults in balance,precise servo responseand uniform left or rightsteering action.

Eatons high capacitygerotor provides am plefluid displacem ent froman even m ore com pactunit than w as previouslyoffered.

A thicker sleevedesign providesstability, especiallyduring pressure andtherm al transientconditions.

The seal and centeringspring designs providepositive, low-effortsteering feel to ensureexcellent vehicle control,an im portant feature forthe vehicles for w hichthese steering controlunits w ere designed.

Features

Load Sensing

Integral Valves

Q -Am p

W ide A ngle

Versa S teer

Cylinder D am ping

Applications

Articulated Vehicles

Loaders

Scrapers

Skidders

AG Tractors

D um pers

Sprayers

Forestry Equipm ent

Rigid Frame Vehicles

Front End Loaders

Large G raders

M ining Trucks

Transporters

AG Tractors





The follow ing 29-digit coding system has been developed toidentify all of the configuration options for the Series 20steering control units. U se this m odel code to specify a unitw ith the desired features. A ll 29-digits of the code m ust bepresent w hen ordering. You m ay w ant to photocopy them atrix below to ensure that each num ber is entered in thecorrect box.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29

A C C F6 A AN A A 1 0 C



1,2,3 Product Series AC C Series 20 Steering Control U nit

4 N om inal Flow 4 38 l/m in [10 G PM ] (Q -Am p)R ating 6 76 l/m in [20 G PM ] (Q -A m p)

7 95 l/m in [25 G PM ] (N on-Q -Am p)A 114 l/m in [30 GPM ] (Q -Am p)

5 Inlet Pressure 6 241 barR ating [3500 PSI]

6 Return Pressure A 10 bar [145 PS I] M axim umR ating

7-8 D isplacem ent 40 60 [3.6]cm 3/r [in3/r] 43 75 [4.5]

45 95 [5.9]48 120 [7.3]50 145 [8.9]51 160 [9.7]52 185 [11.3]54 230 [14.1]57 295 [17.9]59 370 [22.6]61 460 [28.2]64 590 [35.9]66 740 [45.1]69 985 [60.0]

9 Flow A m plification 0 N o Q -A m p1 1.6 : 1.0 Ratio

(Actual D ispl. 185 to 985 cm 3/r[11.3 to 60.0 in3/r])

3 2.0 : 1.0 Ratio

(Actual D ispl. 60 to 370 cm 3/r[3.6 to 22.6 in3/r])

10 N eutral Circuit F Load Sensing, Dynam ic Signal

11 Load C ircuit A N on-Load R eactionD N on-Load Reaction, Cylinder

Dam ped

Use with 38l/min [10 GPM]



12,13 Valve O ptions*M anual** Load Inlet** Cylinder A nti-Steering Sensing C heck R elief C avitationC heck R elief Valve Valve Valve

00

01

02

09

10

13

21

24

40

*N ot all valve options w ill w ork w ith all unit com binations**76 l/m in [20 G PM ] M ax.

14,15 Load Sensing Relief 00 N oneValve S etting 4N 150 bar [2180 P SI]

50 160 bar [2320 PSI]5A 170 bar [2470 PSI]5L 180 bar [2610 PSI]5Y 190 bar [2760 PSI]68 200 bar [2900 PSI]6J 210 bar [3050 PSI]6V 220 bar [3190 PSI]76 230 bar [3340 PSI]7G 240 bar [3480 PSI]

C ontinued on next page

Nos Feature Code Description Nos Feature







16,17 Cylinder 00 N oneRelief 6J 210 bar [3050 PSI]Valve 6V 220 bar [3190 PSI]Setting 76 230 bar [3340 PSI]

7G 240 bar [3480 P SI]7T 250 bar [3630 P SI]84 260 bar [3770 P SI]8E 270 bar [3920 P SI]8R 280 bar [4060 P SI]92 290 bar [4210 P SI]

9C 300 bar [4350 P SI]

18,19,20,21 Ports and A A B N 4 x G 1/2 (B SP ) Ports w ithM ounting G 1/4 (B SP) Load Sensing Port onThreads Side, M 10 M ounting Threads

D AC N 4 x 3/4 (SA E) Ports w ith 7/16 (SA E)Load Sensing Port on Side,M 10 M ounting Threads

FAFN 4 x M 18 (M etric) Ports w ith M 12(M etric) Load Sensing Port on Side,M 10 M ounting Threads

FBFN 4 x M 18 (M etric) Ports w ith M 14(M etric) Load Sensing Port on Side,M 10 M ounting Threads

R AC N * 4 x 7/8 (SA E) Ports w ith 7/16 (SA E)Load Sensing Port on Side,

M 10 M ounting ThreadsSA FN * 4 x M 22 (M etric) Ports w ith M 12(M etric) Load Sensing Port on Side,M 10 M ounting Threads

SB FN * 4 x M 22 (M etric) Ports w ith M 14(M etric) Load Sensing Port on Side,M 10 M ounting Threads

18,19,20,21 Ports and D A D N 4 x 3/4 (SA E) Ports w ith 7/16 (SA E)M ounting Load Sensing Port on Port Face,Threads M 10 M ounting Threads(Load AAW N 4 x G 1/2 (BSP) Ports w ith G 1/4Sensing (B SP) Load Sensing Port on PortRelief Face, M 10 M ounting ThreadsO nly) RA D N * 4 x 7/8 (SAE) Ports w ith 7/16 (SAE)

Load S ensing Port on Port Face,M 10 M ounting Threads

FAVN 4 x M 18 (M etric) Ports w ith M 12(M etric) Load Sensing Port on PortFace, M 10 M ounting Threads

SAV N * 4 x M 22 (M etric) Ports w ith M 12(M etric) Load Sensing Port on PortFace, M 10 M ounting Threads

22 Input Torque 1 Low3 Standard (Includes Stiffer Sprin

23 Fluid Type A S ee E aton Technical B ulletin 3-4

24 Special A pplicationO ptions 1 W ide A ngle D eflection

V Versa Steer, W ide Angle.

25,26 S pecial Features A A N one

27 Paints and Packaging 1 Black Paint


29 Eaton Assigned C Assigned D esign CodeD esign C ode

*U se w ith 114 l/m in [30 G PM ]


**Cylinder ReliefSetting recom m en-dation is 870 P SI(60 bar) above steeringinlet/load sense

pressure.






Installation Drawing

R

T

B

A

63,7[2.51]Max.

60,2[2.37]

107,4 [4.23] Max.

Inlet Check Valve(with Q-Amp Option)

Tank Pressure

48,51 [1.910]

33,40 [1.315]

46,7[1.84]

26,16[1.030]

M10 x 1,5-6H16,2 [.60] (4)

44,40 [1.748]

25,7 [1.01] Max.

19,6 [.77]

90,9[3.58]Max.

3,68/3,43 [.145/.135]

8,4 [.33] Max.

4,8 [.19] Min.

9,7 [.38] Min.

76,7[3.02]

12 Tooth Involute Spline16/32 D.P. 30P.A.13,58 [.535] Deep

MountingSurface

98,3 [3.87] Max.

58,37[2.298](2)

29,18[1.149](2)

Load Sensing Port

Left Right

27,69[1.09]

48,51[1.910]48,13

[1.895]

See Catalog 11-872for Column Details.

E*

C

D

Displ. A Bcm3/r [in3/r] mm[in.] mm[in.]

60 [ 3.6] 6,1 [ .24] 143,3 [5.64]

75 [ 4.5] 7,9 [ .31] 145,0 [5.71]95 [ 5.9] 10,2 [ .40] 147,3 [5.80]

120 [ 7.3] 12,7 [ .50] 149,9 [5.90]

145 [ 8.9] 15,5 [ .61] 152,7 [6.01]

160 [ 9.7] 16,8 [ .66] 153,9 [6.06]

185 [11.3] 19,6 [ .77] 156,7 [6.17]

230 [14.1] 24,4 [ .96] 161,5 [6.36]

295 [17.9] 31,0 [1.22] 168,1 [6.62]

370 [22.6] 39,1 [1.54] 176,3 [6.94]

460 [28.2] 48,8 [1.92] 185,9 [7.32]

590 [35.9] 62,2 [2.45] 199,3 [7.85]

740 [45.1] 78,2 [3.08] 215,3 [8.48]

985 [60.0] 103,9 [4.09] 241,0 [9.49]

PORT A ND MOUNTING THREAD COMBINATIONS

C D E*

3/416 UNF 2B** M10 x 1,56H 7/1620 UNF 2B**

G 1/2*** M10 x 1,56H G 1/4***

M18 x 1,56H M10 x 1,56H M12 x 1,56H, M14

M22 x 1,56H M10 x 1,56H M12 x 1,56H, M14

* Load sensing port option on side (load sense reliefport face only - see page 44).

* * SAE O-ring Port Port

* * * BSP Straight Thread Port






Installation Drawing(Load Sense ReliefOption)

Tank Pressure

Load Sense Port* 7/16-20 UNF-2B (SAE) O-ring Port G 1/4 (BSP) Straight Thread Port M12 x 1,5 -6H (Metric) O-ring Port

*Load sense port on port face (is only availableon units with load sense relief valve).

52,8 [2.08] Max

50,5/49,5[1.99/1.95]

Left

Load Sense Relief Valve

Right






Sectional Drawin

Steering controls

Documents

Transcript of Steering controls