Medium Duty Piston Pump - 4wings

1 HydraulicsWe ManufactureSolutionsS o l u t i o n sH y d r a u l i c sh y d r a u l i c sModel 70122, 70422, 70423, and 70523 Pressure or Pressure-Flow CompensatedPiston PumpsEaton Medium Duty Piston PumpNo. 11-603 April 19972 Medium Duty Piston PumpIntroductionThe four Pressure or Pressure-Flow Compensated Piston pumps with themodel numbers 70122 (19 cm3/r [ in3/r]), 70422 (38 cm3/r [ in3/r]), 70423(45 cm3/r [ in3/r]), and 70523 (69 cm3/r [ in3/r]) are incorporated withinthis catalog for the convenience of additional information or assistance is required, contact a.

2 3 Specifications ..4 Application Information ..5 Model 70122,19 cm3/r [ in3/r] ..6 Performance Data .. 7 Model Code .. 8 Installation Drawings .. 9 - 10 Model 70422, 38 cm3/r [ in3/r] ..11 Performance Data .. 12 Model Code .. 14 Installation Drawings .. 15 - 17 Model 70423, 45 cm3/r [ in3/r] ..11 Performance Data .. 13 Model Code .. 14 Installation Drawings .. 15 - 17 Model 70523, 69 cm3/r [ in3/r] ..18 Performance Data .. 19 Model Code .. 20 Installation Drawings .. 21 - 23 Using the Eaton Pressure-Flow Compensated Pump in Load Sensing Hydraulic Systems.

3 24 Pressure-Flow Compensated - - Load Sensing System .. 24 Constant Flow - - Load Sensing .. 25 Using the Eaton Pressure Compensated Pump in Closed Center Hydraulic Systems ..263 Medium Duty Piston PumpABJHLCFEGDJKJIJDC. Backplate Side and Rear Porting Available Auxiliary mounting Flange AvailableD. Compensator Assembly Pressure Compensated Pressure and Flow CompensatedE. Pressure Compensator SpoolF. Flow Compensator SpoolG. Load Sensing Port (Flow Compensator only)H. CamplateI. Shaft SealJ. BearingsK. Rotating Group 19 cm3/r [ in3/r]Displacement 38 cm3/r [ in3/r]Displacement cm3/r [ in3/r]Displacement 69 cm3/r [ in3/r]DisplacementL.

4 Control PistonA. Housing Compact Lightweight, Durable AluminumB. Input Shaft and mounting Numerous Shaft options mounting Flanges Tandem CapabilityFeatures4 Medium Duty Piston PumpModel 70122, 70422, 70423, and 70523 SpecificationsModel 70122 Model 70422 Model 70423 Model 70523 SpecificationMetric UnitsMetric UnitsMetric UnitsMetric UnitsMounting Flanges2 bolt SAE A Mount2 Bolt SAE B Mount2 Bolt SAE B-B Mount2 and/or 4 Bolt SAE C MountMaximumDisplacement / Rev0 to 19 cm3/r0 to in3/r0 to 38 cm3/r0 to in3/r0 to 45 cm3/r0 to in3/r0 to 69 cm3/r0 to in3/rFlow @Rated Speedand PSI41,6 GPM98.

5 4 GPM125 GPM159 GPMM aximum Rated Speed2500 RPM2500 RPM2700 RPM2700 RPM3000 RPM3000 RPM2500 RPM2500 RPMC ontinuous RatedPressure210 bar3000 PSI210 bar3000 PSI210 bar3000 PSI210 bar3000 PSIM aximum IntermittentPressure 275 bar4000 PSI 275 bar4000 PSI265 bar3800 PSI310 bar4500 PSIC ontinuous AllowableCase Pressure2 bar25 PSI2 bar25 PSI2 bar25 PSI2 bar25 PSIM aximum High PressureStandardStandardStandardStandard StandardStandardStandardStandardSetting @ Zero Flow210 bar3000 PSI210 bar3000 PSI210 bar3000 PSI210 bar3000 PSILow Pressure SettingStandardStandardStandardStandardS tandardStandardStandardStandard@ Zero Flow14 bar200 PSI14 bar200 PSI14 bar200 PSI14 bar200 PSIC ompensator Response@ Rated PSI and RPM15 mil.

6 Mil. mil. mil. mil. mil. mil. mil. Recovery@ Rated PSI and RPM65 mil. mil. mil. mil. mil. mil. mil. mil. Continuous0,87 bar0,91 bar0,94 bar0,94 barInlet Vacuumabsolute4 in. in. in. in. Thrust Load IntoConsult an EatonConsult an EatonConsult an EatonConsult an EatonPump and Shaft Siderepresentative and/orrepresentative and/orrepresentative and/orrepresentative and/orLoad, for Input ContinuousInlet Temperature 107 C225 F 107 C225 F 107 C225 F 107 C225 FMinimum OperatingTemperature-29 C-20 F-29 C-20 F-29 C-20 F-29 C-20 FWeight per single pump 8 kg 18 lbs.

7 12,3 kg 27 lbs. 11,8 kg 26 lbs. 35,4 kg 78 Duty Piston PumpApplication InformationInstallation Requirements Install Piston pumps in such a position that the case drainassures an oil level at or above unit center line. Oil level must be at center line or above before startingpiston pump. Provide a case drain line of adequate size to limit the casepressure to 2 bar [25 PSI] maximum. Filtration is recommended. The combined torque required to turn two or more pumpsmust not exceed the torque rating of the input drive shaft of thefront Piston systems that use Eaton Medium duty Piston pumps thefluid must be maintained at ISO Cleanliness Code 18/13 or betterper SAE J1165.

8 This code allows a maximum of 2,500 particlesper milliliter greater than 5 m and a maximum of 80 particlesper milliliter greater than 15 m. When components withdifferent cleanliness requirements are used in the same system,the cleanest standard should be RecommendationsIn hydraulic systems that use Eaton's Medium Duty pistonpumps and motors, the optimum viscosity range is 10 - 39 cSt[60 - 180 SUS], at normal operating temperatures. Viscosityshould never fall below 6 cSt [45 SUS]. At the lowest expectedstart-up temperature, the viscosity, with a non-charge system,should not exceed 432 cSt [2,000 SUS].

9 Refer to Eaton's Technical Data sheet # Duty Piston PumpModel 70122, 19 cm3/r [ in3/r]PressurePort Suction PortPressurePort Suction PortLoad Sensing LinePortPressure and FlowCompensated PumpModel 70122 SpecificationMetric UnitsMounting Flange2 Bolt SAE A MountMaximum Displacement / Rev0 to 19 cm3/r0 to in3/rFlow @Rated Speed and PSI41,6 GPMM aximum Rated Speed2500 RPM2500 RPMC ontinuous Rated Pressure210 bar3000 PSIM aximum Intermittent Pressure275 bar4000 PSIC ontinuous Allowable Case Pressure2 bar25 PSIM aximum High Pressure Setting @ Zero FlowStd 210 barStd.

10 3000 PSILow Pressure Setting @ Zero FlowStd. 14 barStd. 200 PSIC ompensator Response @ Rated PSI and RPM15 mil. mil. Recovery @ Rated PSI and RPM65 mil. mil. Continuous Inlet Vacuum0,87 bar absolute4 in. Thrust Load Into Pump and Shaft Side Load, forConsult an Eaton representative and/orInput Continuous Inlet Temperature107 C225 FMinimum Operating Temperature-29 C-20 FWeight per single pump 8 kg 18 Duty Piston Pump[Gallons][12][9][6][3]Liters50403020 10 5001000150020002500 Shaft RPMO utlet Flow[Horsepower][40][30][20][10] 5001000150020002500 Shaft RPMI nput Power70 bar [1000 PSI]210 bar [3000 PSI]70 bar [1000 PSI]210 bar [3000 PSI]Percentage908060 5001000150020002500 Shaft RPMV olumetric Efficiency70 bar [1000 PSI]210 bar [3000 PSI]