Rexroth A7VO Series – High-Speed Variable Axial Piston Pumps (80–250 cc)

The A7VO family – covering A7VO80, A7VO107, A7VO160, and A7VO250 – comprises high‑speed swashplate‑type axial piston pumps for open‑circuit hydraulic systems. The common A7V designation identifies the base series, while the numeric suffix indicates nominal displacement in cm³ per revolution.

All models feature stepless displacement adjustment by varying the swashplate angle through an integrated servo piston. This enables flow output precisely proportional to drive speed, delivering high efficiency across a wide operating range. Continuous pressure ratings reach 350 bar, with peaks up to 400 bar depending on the variant.

The specific configuration A7VO160EP2/63R‑VPB01 incorporates an EP2 electro‑proportional control, allowing direct electronic displacement management via PLC or joystick signals. The “/63R” denotes Series 63 with clockwise rotation, while “VPB01” specifies the valve plate and porting arrangement. Similar control options – including HD (hydraulic pressure compensation), LR (load‑sensing), and DR (pressure cut‑off) – are available across the A7VO80, A7VO107, and A7VO250 models.

Typical applications for the A7VO series include:

• A7VO80 and A7VO107: Compact machinery, agricultural equipment, and auxiliary circuits

• A7VO160 (including the EP2/63R‑VPB01 variant): Hydraulic presses, injection moulding machines, and marine winches

• A7VO250: Large excavators, wheel loaders, and heavy‑duty industrial systems

The series shares a robust cast housing, hardened rotating groups, and through‑drive capability for tandem pump mounting. All models require positive inlet pressure (≥0.8 bar absolute), fluid cleanliness to ISO 4406 18/16/13 or better, and regular monitoring of case‑drain flow for early wear detection.

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