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Model: 7982
Ball guide R902041870 Bosch Rexroth — holds spherical elements in a defined position relative to the..
41.52 $
excl. VAT 34.60 $
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Model: 7985
Ball guide Washer R909078316 Bosch Rexroth — compensates for angular misalignment between the pressu..
9.12 $
excl. VAT 7.60 $
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Model: 16634
Bearing R909156249 Bosch Rexroth — reduces friction between rotating and stationary parts. Used in J..
55.44 $
excl. VAT 46.20 $
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Bearings
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Model: 9631
Bearing R909156249 Bosch Rexroth — reduces friction between rotating and stationary parts. Used in J..
55.44 $
excl. VAT 46.20 $
Hydraulics:
Bearings
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Model: 7978
Cylinder block Rotor R902044491 Bosch Rexroth — converts the working fluid flow into mechanical moti..
314.04 $
excl. VAT 261.70 $
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Pump & Motor Parts
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Model: 7983
Disk Spring R909074126 Bosch Rexroth — creates a constant axial preload between the rotating group c..
5.64 $
excl. VAT 4.70 $
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Pump & Motor Parts
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Model: 7984
Piston shoe R909440190 Bosch Rexroth — performs reciprocating motion within the cylinder of the bloc..
30.00 $
excl. VAT 25.00 $
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Pump & Motor Parts
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Model: 12991
Retainer Plate R902205417 Bosch Rexroth — presses the piston shoes against the swashplate surface of..
44.40 $
excl. VAT 37.00 $
Hydraulics:
Pump & Motor Parts
Bosch Rexroth A4VO56 — axial piston pump 56 cm³
Bosch Rexroth A4VO56 is a variable displacement axial piston pump for closed circuits, used in compact construction, road and agricultural machinery, as well as in machines with hydrostatic transmission. Installed on equipment from the following brands: Caterpillar, Komatsu, Hitachi, Kubota, Takeuchi.
Full model range in the section A4VO series
Technical specifications
- Maximum displacement: 56 cm³ (variable)
- Nominal working pressure: up to 40 MPa / 400 bar
- Peak pressure: up to 45 MPa / 450 bar
- Maximum rotational speed: 2500 rpm
- Working fluid: ISO VG 32–46 oils
- Circuit type: closed circuit
- Weight: 38–40 kg
Installed in equipment
-
Caterpillar
- 305CR — Excavator
- 305E2 — Excavator
- 306E — Excavator
-
Komatsu
- PC50MR — Excavator
- PC55MR — Excavator
- PC60 — Excavator
-
Hitachi
- ZX55U — Excavator
- ZX60USB — Excavator
-
Kubota
- KX080 — Excavator
- U55 — Excavator
-
Takeuchi
- TB260 — Excavator
- TB280 — Excavator
OEM numbers A4VO56
-
Bosch Rexroth
- R909428813 A4VO56HD/10L-PZA12K02
- R909429208 A4VO56HD/10R-PZA12K02
- R909442274 A4VO56LR/10R-PZA12K01
Spare part numbers A4VO56
-
Bosch Rexroth
- R909432409
- R909408794
- R902095922
Spare parts for Bosch Rexroth A4VO56
- 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 A4VO56
We perform diagnostics and repair of Bosch Rexroth A4VO56 axial piston pump: checking hydraulic parameters, assessing the condition of the piston group and bench testing after restoration.
Contact us — we will repair A4VO56 and provide spare parts with quality warranty.
Technical specifications verified by the Aspect Plus technical catalog.