Rexroth A7V0250 A7VO250 9136529 hydraulic pump for Hitachi EX550-5 EX550LC-5 EX600H-5 EX600LCH-5 excavator





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OEM 9136529 | For Hitachi EX550-5 / EX550LC-5 / EX600H-5 / EX600LCH-5 Excavator
1. Product Description
Rexroth A7VO250 (often written A7V0250) is a bent-axis variable displacement axial piston main pump, OEM number 9136529, used as the main hydraulic pump on Hitachi large excavators EX550-5 / EX550LC-5 / EX600H-5 / EX600LCH-5.
It’s a genuine / OEM equivalent direct replacement for the original main pump, supplying high pressure and large flow for heavy digging, lifting, and travel operations.
2. Key Specifications (A7VO250)
Model: A7VO250 (A7VO250DRG/63R-VPB02)
OEM: 9136529
Type: Bent-axis variable axial piston pump (open circuit)
Displacement: 250 cm³/rev
Nominal Pressure: 350 bar (35 MPa)
Max Pressure: 400 bar (40 MPa)
Control: DR / DRG (pressure control, remote adjustable)
Rotation: Clockwise (viewed from shaft end)
Weight: ~190 kg
Quality: Genuine Rexroth / OEM equivalent, CE certified
3. Compatibility (Hitachi)
EX550-5
EX550LC-5
EX600H-5
EX600LCH-5
4. Machine Hydraulic Data (EX550-5 / EX600H-5)
Engine Power: 272 kW (370 PS) @ 1,800 rpm
Main Pump Flow: 2 × 382 L/min (dual A7VO250)
Main Relief Pressure: 34.3 MPa (350 bar)
5. Features & Advantages
Bent-axis design: High efficiency, high pressure resistance, long life
Heavy-duty rotary group: Tapered pistons, reinforced bearings for severe duty
Pressure/flow control: Matches load demand, saves fuel, reduces heat
Direct replacement: Same mounting, ports, performance as original 9136529
6. Why Choose Us
10+ years in large excavator hydraulic core parts
Genuine Rexroth & high-quality aftermarket A7VO250 in stock
Guangzhou warehouse stock, ship in 1–2 days
1-year warranty against manufacturing defects
Express / sea freight available
7. FAQ
Q: Is A7VO250 the same as A7V0250?A: Yes—A7V0250 is a common typo for A7VO250.
Q: Does it fit both EX550-5 and EX600H-5?A: Yes, 9136529 is the OEM number for both models.
Q: Do you have it in stock?A: Yes, regular stock, quick delivery.