A7V20LV1RPGOO Rexroth Bent Axis Piston Pump 20.5 cm³ 350 bar

Product Overview

The A7V20LV1RPGOO belongs to the Bosch Rexroth A7V series of bent-axis (slant axial) variable displacement axial piston pumps (compatible with A7V58, A7V78, A7V80, A7V107, A7V250 sizes). Designed for open-circuit hydrostatic drives, these pumps feature a bent-axis rotary group where flow is proportional to drive speed and displacement and can be steplessly varied. Fully interchangeable with genuine Rexroth units, they 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: A7V20LV1RPGOO (series includes A7V58 / A7V78 / A7V80 / A7V107 / A7V250)
• Displacement (Vg max): A7V20 approx. 20.5 cm³/rev; A7V58 approx. 58.8 cm³/rev; A7V78 approx. 78 cm³/rev; A7V80 approx. 80 cm³/rev; A7V107 approx. 107 cm³/rev; A7V250 250 cm³/rev
• Continuous / Rated Pressure: up to 350 bar
• Peak / Intermittent Pressure: up to 400 bar
• Maximum Speed: varies by size (A7V20 up to 3800+ rpm; larger sizes approx. 1400–1900 rpm)
• Control Type: Variable (LV power control, etc., code dependent)
• Design: Bent-axis axial piston, open circuit
• Rotation: Configurable
• Weight: Increases with size
• Brand / Series: Bosch Rexroth A7V bent-axis variable piston pump

Key Technical Advantages

1. Bent-Axis Design & High Power Density: The optimized bent-axis geometry of the tapered piston rotary group delivers high volumetric efficiency and compact high-power output suitable for high-pressure, high-flow demands.
2. Wide Variable Range & Multiple Controls: Displacement can be steplessly adjusted from Vg max down to near zero. Supports power control (LV), pressure control and other options for precise system load matching.
3. High Pressure Capability & Robust Bearings: Continuous rating of 350 bar and peak of 400 bar, combined with high-strength materials and long-life bearings, support sustained high-pressure and intermittent peak operation.
4. Low Noise & High Efficiency: Optimized flow paths and rotating components reduce operating noise while maintaining high mechanical-hydraulic efficiency and minimizing heat generation.
5. True Interchangeability & Modular Service: Fully compatible with OEM mounting dimensions and interfaces, enabling rapid replacement and repair while minimizing downtime.

Application Areas

• Main or auxiliary pumps on construction machinery (excavators, loaders, cranes)
• Agricultural and forestry equipment hydraulic systems
• Port and material-handling equipment
• Industrial fixed hydraulic power units and high-pressure systems
• Any mobile or stationary application requiring open-circuit variable displacement performance

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 suction/pressure port connections.
2. Use anti-wear hydraulic oil meeting ISO cleanliness and viscosity requirements; system filtration should be at least 10–20 μm. Thoroughly bleed air and check case pressure before initial start-up.
3. Regularly monitor suction pressure and case drain to prevent cavitation or over-pressure. Verify control signals and setpoints to avoid overshoot.
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.