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Basic Information
- Series: A4VTG / A4VG Closed‑Circuit High‑Pressure Variable‑Displacement Axial Piston Pump (Rexroth Type)
- Main Models: A4VTG71, A4VTG90, A4VG90
- Control Types: DW hydraulic control, HWU constant‑power control, EP2 electro‑proportional control
- Displacement: 71cc, 90cc/rev
- Pressure Rating: Rated 35 MPa, Peak 42 MPa
- Features: Multiple control modes, closed‑circuit design, high‑pressure resistant, compact structure, low internal leakage, high efficiency, heavy‑duty stable performance
- Application: Concrete mixer truck, excavator, road roller, rotary drilling rig, mobile construction machinery hydraulic spare parts
English FAQ
Q1: Model & control explanation
- A4VTG: Mainly for concrete mixer trucks; A4VG: Widely used in excavators & construction machinery
- DW: Hydraulic displacement control
- HWU: Hydraulic constant‑power control
- EP2: Electro‑hydraulic proportional control for precise flow regulation
Q2: Core advantages
Universal spare parts for mixer & excavator, interchangeable with original Rexroth pumps, long service life, stable performance under heavy‑load working conditions.
Q3: Compatibility
Standard OEM‑matched mounting dimensions, direct replacement without modification.
