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A7VO Series High‑Pressure Variable Displacement Axial Piston Hydraulic Pump A7VO55DR/63R‑NPB01 A7VO160 A7VO250DR/63R‑VPB02
Basic Information
- Series: A7VO Variable‑Displacement Axial Piston Hydraulic Pump (Rexroth type)
- Main Displacements: A7VO55, A7VO160, A7VO250 cc/rev
- Featured Models:
A7VO55DR/63R‑NPB01
A7VO250DR/63R‑VPB02
- Pressure Rating: Rated 35 MPa, Peak 42 MPa
- Features: DR pressure‑cutoff variable control, high‑pressure resistance, energy‑saving flow adjustment, low internal leakage, heavy‑load durable, high volumetric efficiency
- Application: Excavator main pump, concrete pump truck, mining machinery, drilling rig, large construction machinery hydraulic system
English FAQ
Q1: Model code meaning
- DR: Pressure‑cutoff variable control mode
- 63R: Series version & right‑hand rotation
- NPB01 / VPB02: Oil port layout, mounting flange, seal and special specification
Q2: Core advantages
DR pressure‑limiting variable design prevents over‑pressure damage; stable high‑pressure output, strong overload resistance, long‑life performance under continuous heavy‑duty operation.
Q3: Compatibility
Standard OEM‑matched installation dimensions, fully interchangeable with original Rexroth A7VO pumps, direct replacement without modification.
