Rexroth AP2D28 72285151 hydraulic pump for Case CX40B CX45B CX50B CX55B mini excavator
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For: Case CX40B, CX45B, CX50B, CX55B Mini Excavator
OEM Part Number: 72285151
Model: Rexroth AP2D28 (Uchida Rexroth)
Type: Variable Displacement Axial Piston Main Pump
Weight: ~18 kg (40 lbs)
Condition: Genuine OEM / Remanufactured / High‑Quality Aftermarket
Warranty: 12 months (genuine/reman); 6–12 months (aftermarket)
Stock: In stock, fast global delivery
1. Part Number Cross Reference
72285151: Case OEM main pump (Rexroth AP2D28)
AP2D28LV1RS7: Rexroth model spec (28cc/rev, variable)
Interchange: PH10V00015F1, PS10V00002F1 (Case aftermarket equivalents)
2. Compatible Machines
Case CX40B (4 ton)
Case CX45B (4.5 ton)
Case CX50B (5 ton)
Case CX55B (5.5 ton)
3. Key Specifications (AP2D28)
Displacement: 28 cc/rev
Rated Pressure: 280 bar (4,060 psi)
Max Pressure: 350 bar (5,075 psi)
Max Speed: 2,500 rpm
Control: Load sensing + pressure compensation
Rotation: Clockwise (RH)
Shaft: Splined (10T), direct OEM fit
4. Features & Benefits
Rexroth/Uchida genuine quality: Japan‑made, high‑wear components, anti‑cavitation design
Compact & lightweight: Ideal for 4–5.5 ton mini excavators
Energy‑efficient: Load‑sensing control reduces fuel consumption
Direct bolt‑on: Exact dimensions/ports; no modification needed
Proven reliability: OE pump for Case B‑series mini excavators
5. Supply Details
Packing: Export‑grade anti‑rust wooden crate
Delivery: 3–7 working days worldwide
Certification: ISO 9001, CE
Core exchange: Core credit available for old rebuildable pumps
6. FAQ
Q: Is this the main pump or pilot pump?
A: Main hydraulic pump (AP2D28). Pilot gear pump is separate (typically AP2D18 or 4.5cc gear pump).
Q: Does it fit all B‑series models?
A: Yes, fully compatible with CX40B / CX45B / CX50B / CX55B.
Q: What’s the difference between genuine and aftermarket?
A: Genuine Rexroth = original performance + 12‑month warranty. Aftermarket = same specs at lower cost.