A2FM63/61W-VAB010 Rexroth Bent-Axis Motor 63 cm³ 400 bar

Product Overview

The A2FM63/61W-VAB010, A2FM63/61W-VAB100 and related A2FM80, A2FM90, A2FM107, A2FM125 belong to the Bosch Rexroth A2FM series of bent-axis fixed displacement axial piston motors. Designed for open and closed circuit hydrostatic systems, output speed depends on pump flow and motor displacement, while output torque increases with pressure differential and displacement. Fully interchangeable with genuine Rexroth units, these motors enable direct drop-in replacement without modification to mounting interfaces or piping. Every unit undergoes 100% simulated operating-condition testing to ensure high efficiency and reliability under high pressure.

Technical Specifications 

• Model: A2FM63/61W-VAB010 / A2FM63/61W-VAB100 / A2FM80 / A2FM90 / A2FM107 / A2FM125 (A2FM series)
• Displacement: A2FM63 63 cm³/rev; A2FM80 80.4 cm³/rev; A2FM90 90 cm³/rev; A2FM107 106.7 cm³/rev; A2FM125 125 cm³/rev
• Continuous / Rated Pressure: up to 400 bar
• Peak / Intermittent Pressure: up to 450 bar
• Maximum Speed: A2FM63 approx. 2000–5000 rpm; A2FM80/90 approx. 1800–4500 rpm; A2FM107/125 approx. 1600–4000 rpm (condition dependent)
• Control Type: Fixed displacement
• Design: Bent-axis axial piston, suitable for open and closed circuits
• Weight: A2FM63 approx. 18 kg; A2FM80/90 approx. 23 kg; A2FM107/125 approx. 32 kg
• Brand / Series: Bosch Rexroth A2FM bent-axis fixed piston motor

Key Technical Advantages

1. Bent-Axis High-Pressure Design & Power Density: Continuous rating of 400 bar and peak of 450 bar. Compact bent-axis construction delivers high power density for heavy-duty open and closed circuit applications.
2. High Overall Efficiency: Optimised piston and cylinder block design provides high mechanical-hydraulic efficiency, reducing system heat generation.
3. One-Piece Pistons & Reliable Drive: One-piece tapered pistons with piston rings offer simple, reliable construction and extended service life.
4. Robust Bearings & Extended Life: Drive shaft bearings are designed for the expected operating conditions, supporting long-term reliable operation.
5. True Interchangeability & Flexibility: Fully compatible with OEM mounting dimensions and interfaces, suitable for both mobile and stationary equipment.

Application Areas

• Travel and swing drives on construction machinery
• Industrial fixed hydraulic drive systems
• Agricultural and forestry equipment
• Port and material-handling equipment
• Any open or closed circuit system requiring stable torque output

Expert Maintenance Tips

1. Ensure proper drive-shaft alignment during installation; use a flexible coupling and avoid excessive radial/axial loads. Verify correct rotation and port connections.
2. Use anti-wear hydraulic oil meeting ISO cleanliness and viscosity requirements; system filtration should be at least 10 μm. Thoroughly bleed air before initial start-up.
3. Regularly monitor case pressure and oil temperature to prevent over-pressure. Check system pressure differential and flow.
4. During service, inspect pistons, cylinder block and valve plate for wear; replace complete rotating groups when necessary. Store long-term units in a dry environment and rotate the shaft periodically.