A11VLO130 A11VLO40-260 Axial Piston Pump | 350 bar | Rexroth

Product Overview

The A11VLO series swashplate axial piston variable pumps represent the all-purpose high-pressure pump within the Bosch Rexroth hydraulic transmission platform, featuring the proven swashplate axial piston design specifically developed for open-circuit hydrostatic drive systems. The series offers eight displacement sizes from 40 to 260, covering applications from light-duty to heavy-duty mobile and industrial equipment. This product covers the full A11VLO series range — A11VLO40, A11VLO60, A11VLO75, A11VLO95, A11VLO130, A11VLO145, A11VLO190, and A11VLO260 — with the A11VLO130LRDH1/10R-NZD12K61 (material number R902104528) serving as the 130cc mainstream model.

Control Description: The A11VLO130LRDH1/10R-NZD12K61 features LRDH1 control — a triple-function control combining Load-Sensing + Pressure Cutoff + Torque Limiter. This control automatically adjusts flow output based on system load demand while providing protection when preset pressure or torque limits are reached — ideal for mobile applications with severe load fluctuations.

100% Interchangeability Guarantee: Our pumps strictly adhere to Bosch Rexroth A11VLO original mounting dimensions and port layouts (Series 10 and 11), enabling drop-in replacement without modifications. Every unit undergoes 100% simulated duty-cycle testing under actual load conditions to validate performance parameters before shipment, ensuring immediate reliability upon installation.

Quality & Manufacturing Standards: The housing is manufactured from high-strength cast iron, with critical tribological pairs (cylinder barrel/valve plate, pistons/slippers) precision-ground and heat-treated. The universal through drive supports mounting of gear pumps and axial piston pumps up to the same nominal size (100% through drive). Flow is proportional to drive speed and displacement, infinitely variable from maximum to zero. The pump supports self-priming, pressurized reservoir, or charge pump priming options. Power adjustment is externally accessible even while the pump is running.

Technical Specifications 

Series General Specifications (A11VLO Series 10/11):

• Design: Swashplate axial piston variable pump

• Circuit Type: Open circuit

• Rated Pressure: 350 bar (5,100 psi)

• Maximum Pressure: 400 bar (5,800 psi)

• Displacement Range: 40 – 260 cm³/rev

• Control Options: Multiple (LR power control, DR constant pressure, HD hydraulic, EP electro-proportional, etc.)

• Through-Drive: Available (gear pumps and axial piston pumps up to same nominal size)

• Priming Options: Self-priming, pressurized reservoir, or charge pump

• Power Adjustment: Externally adjustable during operation

A11VLO40:

• Displacement (Vg max): 42.0 cm³/rev

• Maximum Speed @ Vg max: 3,000 rpm

• Maximum Speed @ Vg ≤ Vg max: 3,500 rpm

• Rated Pressure: 350 bar

• Peak Pressure: 400 bar

• Weight (approx.): 32 kg

A11VLO60:

• Displacement (Vg max): 58.5 cm³/rev

• Maximum Speed @ Vg max: 2,700 rpm

• Maximum Speed @ Vg ≤ Vg max: 3,250 rpm

• Rated Pressure: 350 bar

• Peak Pressure: 400 bar

• Maximum Flow (@ nmax & Vg max): 158 L/min

• Weight (approx.): 40 kg

A11VLO75:

• Displacement (Vg max): 74.0 cm³/rev

• Maximum Speed @ Vg max: 2,550 rpm

• Maximum Speed @ Vg ≤ Vg max: 3,000 rpm

• Rated Pressure: 350 bar

• Peak Pressure: 400 bar

A11VLO95:

• Displacement (Vg max): 93.5 cm³/rev

• Maximum Speed @ Vg max: 2,350 rpm

• Maximum Speed @ Vg ≤ Vg max: 2,780 rpm

• Rated Pressure: 350 bar

• Peak Pressure: 400 bar

• Maximum Flow (@ nmax & Vg max): 220 L/min

• Weight (approx.): 53 kg

A11VLO130 (A11VLO130LRDH1/10R-NZD12K61, Material No. R902104528):

• Complete Model Code: A11VLO130LRDH1/10R-NZD12K61

• Material No.: R902104528

• Displacement (Vg max): 130.0 cm³/rev

• Rated Pressure: 350 bar

• Peak Pressure: 400 bar

• Maximum Speed @ Vg max: 2,500 rpm

• Maximum Speed @ Vg ≤ Vg max: 2,500 rpm

• Maximum Flow (@ 2,500 rpm): 325 L/min

• Power (@ Δp=350 bar): 190 kW

• Torque (@ Δp=350 bar): 724 N·m

• Control Type: LRDH1 (Load-Sensing + Pressure Cutoff + Torque Limiter)

• Rotation: R (clockwise, viewed from shaft end)

• Series: Series 10

• Weight (approx.): 72 kg

A11VLO145:

• Displacement (Vg max): 145.0 cm³/rev

• Maximum Speed @ Vg max: 2,500 rpm

• Maximum Speed @ Vg ≤ Vg max: 2,500 rpm

• Rated Pressure: 350 bar

• Peak Pressure: 400 bar

• Maximum Flow (@ 2,500 rpm): 363 L/min

• Power (@ Δp=350 bar): 211 kW

• Torque (@ Δp=350 bar): 808 N·m

• Weight (approx.): 73 kg

A11VLO190:

• Displacement (Vg max): 193.0 cm³/rev

• Maximum Speed @ Vg max: 2,500 rpm

• Maximum Speed @ Vg ≤ Vg max: 2,100 rpm

• Rated Pressure: 350 bar

• Peak Pressure: 400 bar

• Maximum Flow (@ 2,500 rpm): 483 L/min

• Power (@ Δp=350 bar): 281 kW

• Torque (@ Δp=350 bar): 1,075 N·m

• Weight (approx.): 104 kg

A11VLO260:

• Displacement (Vg max): 260.0 cm³/rev

• Maximum Speed @ Vg max: 2,300 rpm

• Maximum Speed @ Vg ≤ Vg max: 2,300 rpm

• Rated Pressure: 350 bar

• Peak Pressure: 400 bar

• Maximum Flow (@ 2,300 rpm): 598 L/min

• Power (@ Δp=350 bar): 349 kW

• Torque (@ Δp=350 bar): 1,448 N·m

• Weight (approx.): 138 kg

Key Technical Advantages

1. LRDH1 Triple-Function Control — Load-Sensing + Pressure Cutoff + Torque Limiter
The A11VLO130LRDH1/10R-NZD12K61 features LRDH1 control integrating Load-Sensing, Pressure Cutoff, and Torque Limiter into a single control package. Load-sensing automatically adjusts flow to match system demand; pressure cutoff reduces displacement to zero when system pressure reaches the set value; torque limiter prevents exceeding the drive torque limit under extreme conditions. Pressure regulation accuracy reaches ±1% — the optimal control solution for mobile applications with severe load fluctuations.

2. Full-Series Displacement Coverage — From 40 to 260
The A11VLO series offers eight displacement sizes — 40, 60, 75, 95, 130, 145, 190, and 260 — covering a complete range from 42 to 260 cm³/rev. With a unified mounting interface standard, the series enables full-scenario coverage from compact equipment to large machinery within a single product platform.

3. 350 bar Rated / 400 bar Peak — All-Purpose High-Pressure Champion
The entire series delivers 350 bar (5,100 psi) rated pressure and 400 bar (5,800 psi) peak pressure. This pressure rating enables the A11VLO series to handle everything from agricultural machinery to mining equipment — one of the highest-pressure universal variable pumps in open circuits.

4. 100% Through-Drive — Unlimited System Expansion
The A11VLO series features standard through-drive capability, supporting mounting of gear pumps and axial piston pumps up to the same nominal size (100% through drive). This enables the A11VLO series to serve as the “power core” of complex hydraulic systems — driving multiple circuits from a single pump without additional power input interfaces or transfer cases.

5. Externally Adjustable Power Setting — Zero-Downtime Field Commissioning
Power control settings on the A11VLO series support external adjustment while the pump is running. This significantly simplifies field commissioning — power matching optimization can be performed without shutdown, dramatically reducing downtime during equipment commissioning and maintenance.

6. Compact Design and High Power Density
The A11VLO series delivers exceptional power density within a compact envelope. The A11VLO130, for example, weighs only 72 kg while delivering 190 kW at 350 bar rated pressure. Optimized fluid passage design and precision manufacturing deliver low operating noise characteristics.

Application Areas

The A11VLO series swashplate axial piston variable pumps are widely deployed in open-circuit hydraulic systems across the following applications:

• Mobile Construction Machinery — hydraulic systems for excavators, loaders, bulldozers

• Agricultural Machinery — hydrostatic drives for large combine harvesters and tractors

• Road Construction Machinery — traction and implement hydraulic systems for asphalt pavers and rollers

• Mining Equipment — hydraulic drives for underground loaders and haulers

• Material Handling Equipment — hydraulic systems for heavy forklifts and reach stackers

• Industrial Hydraulic Systems — hydraulic power units for large presses and test benches

• Specialty Vehicles — hydrostatic transmissions for military vehicles and airport ground support equipment

Expert Maintenance Tips

1. Suction Conditions and Housing Priming (Critical Step)
The A11VLO series supports self-priming, pressurized reservoir, or charge pump priming options. Before initial start-up or after extended downtime, the housing must always be filled with hydraulic fluid. Pre-fill through case drain ports prior to start-up to prevent dry-running damage to critical tribological pairs.

2. Filtration and Fluid Cleanliness
Axial piston pumps are highly sensitive to fluid cleanliness. Recommended filtration per ISO 4406 cleanliness level of 19/17/14 or better. Return line and suction filters should be inspected and replaced regularly.

3. Through-Drive Tandem Installation Considerations
For tandem installations on the through-drive, arrange the highest power flow unit closest to the input power source. Ensure all case drain ports in the tandem stack have unrestricted return paths to prevent case pressure exceedance.

4. LRDH1 Control Tuning Considerations
LRDH1 control integrates load-sensing, pressure cutoff, and torque limiter functions. During commissioning, systematically set pressure cutoff and torque limits per the technical manual (data sheet RE 92500). Prior to initial loading, run at low speed with no load for 5–10 minutes to purge air and establish proper oil film before gradually applying load.

5. Special Requirements for A11VLO130-260 with Charge Pump
A11VLO series units from size 130 to 260 are equipped with a charge pump. The charge pump provides stable charge pressure and flushing flow for closed circuits or large-displacement open systems — charge pressure should be continuously monitored during operation.