A11VLO130LE2S5/10R-NZG12N00-S Rexroth Piston Pump 130 cm³ 350 bar

Product Overview:

The A11VLO130LE2S5/10R-NZG12N00-S and A11VLO190DRS/11R-NZD12K07 belong to the Bosch Rexroth A11VLO series of high-pressure variable displacement axial piston pumps with integral charge pump (sizes 130…260). Featuring a swash-plate design for open-circuit hydrostatic drives, flow is proportional to drive speed and displacement and is infinitely variable. The built-in charge pump enhances suction performance for demanding mobile applications. Fully interchangeable with genuine Rexroth units, these pumps enable direct drop-in replacement without modification to mounting interfaces or piping. Every unit undergoes 100% simulated operating-condition testing to ensure high power density and reliability under high pressure.

Technical Specifications 

• Model: A11VLO130LE2S5/10R-NZG12N00-S / A11VLO190DRS/11R-NZD12K07
• Displacement (Vg max): A11VLO130 130 cm³/rev; A11VLO190 193 cm³/rev
• Continuous / Rated Pressure: up to 350 bar
• Peak / Intermittent Pressure: up to 400 bar
• Maximum Speed: approx. 2500 rpm at Vg max (with charge pump)
• Control Type: Variable (LE2, DRS power/pressure/load-sensing combinations, code dependent)
• Design: Swash-plate axial piston, open circuit, with charge pump (A11VLO)
• Weight: A11VLO130 approx. 72 kg; A11VLO190 approx. 104 kg
• Brand / Series: Bosch Rexroth A11VLO high-pressure variable piston pump

Key Technical Advantages

1. High-Pressure Design with Charge Pump: Continuous rating of 350 bar and peak of 400 bar. Integral charge pump significantly improves suction capability for high-altitude or long suction-line conditions.
2. High Power Density & Advanced Controls: Compact swash-plate construction combined with LE2, DRS and other advanced controls enables precise flow matching and system energy savings.
3. High Efficiency & Low Noise: Optimised flow paths and valve plate design maintain high volumetric efficiency while reducing operating noise.
4. Robust Bearings & Extended Service Life: High-load-capacity bearings and precision manufacturing ensure reliable long-term operation under high-pressure, high-speed conditions.
5. True Interchangeability & Modular Design: Fully compatible with OEM mounting dimensions and interfaces, facilitating rapid replacement and system upgrades.

Application Areas

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

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 inlet pressure and case drain to prevent cavitation or over-pressure. Verify control setpoints and charge pump performance.
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.