
Eaton 6421 / 6423 — variable displacement axial piston pump 105 cm³
Eaton 6421 and 6423 are variable displacement axial piston pumps of the Series 64, designed for closed-loop hydrostatic drives. The integrated charge pump provides loop charging and servo control. Available control options — mechanical, hydraulic and electronic — allow the pump to be adapted to a wide range of applications. Used as the main drive in hydrostatic transmissions of transit mixers, combine harvesters, wheel loaders, asphalt pavers, road rollers, as well as in industrial installations — winches, cranes and drilling systems.
Full model range in the section Eaton Series 64
Technical specifications
- Displacement: 105 cm³
- Nominal pressure: 420 bar
- Peak pressure: 480 bar
- Maximum speed: 4810 rpm
- Flow rate: 99.1 GPM (375 l/min)
- Control: mechanical / hydraulic / electronic (servo control)
- Seal: Face Seal (6421) / Lip Seal (6423)
- Weight: 38–45 kg
Installed in equipment
-
Transit mixer
- McNeilus
- Con-Tech
- Terex Advance
-
Loader
- Komatsu
- Volvo
- Case
- JCB
-
Backhoe loader
- JCB
- Case
- Caterpillar
- John Deere
-
Asphalt paver
- Dynapac
- Bomag
- Vögele
- Caterpillar
-
Roller / Compactor
- Dynapac
- Bomag
- Hamm
- Volvo
-
Dozer
- Caterpillar
- Case
- Komatsu
- Liebherr
-
Harvester
- Case IH
- New Holland
- John Deere
- Claas
-
Equipment types
- Crane
- Winches and drum drives
- Drilling rig
OEM numbers 6421 / 6423
-
Eaton
- 6423-145
- 6423-279
- 6423-338
- 6423-533
- 6423-546
Spare parts for Eaton 6421 / 6423
- Cylinder block Rotor
- Drive Shaft
- Separation Bush
- Ball guide
- Disk Spring
- Snap Ring
- Slider
- Coupling of drive shaft
- Cylinder block press pin
- Charge Pump
- Roller Bearing
- Cradle Bearing Set
- Retainer Plate
- Swash plate (cam rocker)
- Piston shoe
- Rotor Spring
- Seal kit pump
- Shaft Seal
- Wire
- Valve plate
- Ball guide washer
- Pressure Override Valve
- Control Valve Regulator
- Regulator assembly
- Servo Piston
Repair and service 6421 / 6423
We perform diagnostics and repair of axial piston pump Eaton 6421 / 6423: checking hydraulic parameters, assessing the condition of the piston group and bench testing after restoration.
Contact us — we will repair axial piston pump 6421 / 6423 and select genuine spare parts.
Technical specifications verified by the Aspect Plus technical catalog.