
Uchida AP2D21 — variable displacement axial piston hydraulic pump 2 × 21 cm³
Uchida AP2D21 is a tandem variable displacement axial piston pump with swash plate. Two independent pump sections in a single housing provide simultaneous supply to different hydraulic circuits — travel drive and working equipment — without mutual interference. Optionally equipped with a third gear pump for pilot control circuit supply. Depending on application, it performs different functions: in 4–5 tonne Kubota mini excavators it serves as the main hydraulic pump; in larger machines by Hyundai, Doosan, Volvo and Kobelco the gear section of AP2D21 is used as a pilot pump within the main pump assembly.
Full model range in the section Uchida AP2D series.
Technical specifications AP2D21
- Displacement: 2 × 21 cm³
- Max. operating pressure: 350 bar
- Rated speed: 3500 rpm
Installed in equipment
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Kubota
- KX101 — mini excavator
- KX121-2 — mini excavator
- KX121-3 — mini excavator
-
Hyundai
- R55-7 — mini excavator
- R60-5 — mini excavator
- R60-7 — mini excavator
-
Doosan
- DH55 — mini excavator
- DH60-7 — mini excavator
-
Volvo
- EC55B — mini excavator
- EC60C — mini excavator
-
Kobelco
- SK55 — mini excavator
OEM numbers AP2D21
-
Uchida
- AP2D21LV1RS6
- AP2D21LV1RS6-463
- AP2D21LV1RS6-974
- AP2D21LV1RS6-985-1
- AP2D21LV1RS6-996
- AP2D21LV1RS6-9780
- AP2D21LV1RJ6
- AP2D21LV1J6
- AP2D21LV1RS7
Spare parts for Uchida AP2D21
- 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 AP2D21
We perform diagnostics and repair of pump Uchida AP2D21: checking hydraulic parameters, assessing the condition of the piston group and bench testing after restoration.
Contact us — we will repair pump AP2D21 and select genuine spare parts.
Spare Parts Diagram Uchida AP2D21
Spare Parts Diagram
Technical specifications verified by the Aspect Plus technical catalog.