A4FO28 A4VFO28

Bosch Rexroth A4FO28 A4VFO28 pump characteristics

The A4FO28 model is a non-adjustable axial piston pump with a swash plate that provides a constant flow volume. Meanwhile, the A4VFO28 model is a variable displacement axial piston pump. It is designed for hydraulic systems where variable oil flow is required.

Technical specifications of Bosch Rexroth A4FO28 A4VFO28:

• Type: (un)adjustable axial piston pump with swash plate
• Maximum working volume: 28 cm³
• Working pressure:
  • A4FO28
    • Nominal: up to 28 MPa 280 bar
    • Peak: up to 35 MPa 350 bar
  • A4VFO28
    • Nominal: up to 35 MPa 350 bar
    • Peak: up to 40 MPa 400 bar
• Maximum rotation speed:
  • A4FO28: 3600 rpm
  • A4VFO28: 3000 rpm
• Working environment: hydraulic oils or compatible with ISO VG 32–46
• Weight:
  • A4FO28: 14–16 kg
  • A4VFO28: 18–20 kg
• Application in special equipment: tractors, excavators, cranes, hydraulic systems of combines and seed drills, hydraulic presses, machine tools, etc.

Hydraulic pump cross number:

Installed in the model: Bomag BW 151

The company "Aspect Plus" offers a wide range of spare parts for the repair of the Bosch Rexroth A4FO28 A4VFO28 hydraulic pump.