Bosch Rexroth A11VLO160 swashplate variable hydraulic pump

The A11VLO160 is a variable-displacement axial piston pump from Bosch Rexroth's A11V series, designed primarily for open-circuit hydraulic systems. The "160" designation refers to its geometric displacement of roughly 160 cm³ per revolution at maximum swashplate angle — putting it in the mid-to-large displacement range used for demanding mobile and industrial applications.

Unlike fixed-displacement gear or vane pumps, the A11VLO160 can change its output flow while running, without changing shaft speed. It does this by pivoting an internal swashplate, which alters the stroke length of the pistons and therefore the volume of fluid displaced per revolution.

Core Design Features of the A11VLO160

Piston and Cylinder Block Assembly

The pump uses an odd number of pistons (commonly nine) arranged around the cylinder block. This design smooths out flow pulsation compared to even-numbered piston arrangements, which helps reduce noise and vibration — a detail that matters a great deal in cabin-equipped mobile machinery.

Control Options

Bosch Rexroth typically offers the A11V/A11VLO series with several control variants, which may include:

DR (pressure control): Automatically reduces displacement as system pressure approaches a set maximum, protecting the system and limiting power draw.

EO / EP (electric proportional control): Allows an external electronic signal to set displacement directly, useful in systems with a machine controller or PLC.

LR2 (load-sensing control): Matches pump output to actual load demand, minimizing throttling losses.

Combination controls: Pressure and flow (or pressure and load-sensing) combined for applications needing both protection and efficiency.

The exact control code available depends on how the specific pump was ordered, since Rexroth's model codes encode the control type as a suffix.

Shaft and Mounting Options

Like most pumps in this class, the A11VLO160 is typically available with multiple shaft-end options (splined, keyed) and mounting flange standards (ISO or SAE), letting it bolt directly onto a wide range of prime movers — electric motors, diesel engines, or gearboxes — without custom adapters.

Bearing and Housing Design

The pump's housing is engineered to handle the radial and axial loads generated by the piston-swashplate interaction, with a robust bearing arrangement supporting the drive shaft. This is part of why axial piston pumps in this class tolerate higher pressures than vane or gear pumps of comparable size.

Typical Applications

Industrial Machinery

In stationary industrial settings, the A11VLO160 is often found powering:

Hydraulic presses and stamping equipment

Plastic injection molding machines

Test rigs and simulation benches requiring precise, repeatable flow control

Machine tools with hydraulically actuated clamping or feed systems

Mobile and Off-Highway Equipment

In mobile applications, variable displacement pumps like this one are used for:

Construction machinery (excavators, loaders) where multiple functions share one pump

Agricultural equipment requiring load-sensing efficiency

Material handling equipment such as cranes and lifts

Sizing and Selection Considerations

Matching Displacement to Duty Cycle

Selecting a pump this size means balancing peak flow needs against duty cycle. Oversizing a variable pump wastes capital and can make fine control harder at low displacement angles; undersizing forces the pump to run near its maximum swashplate angle constantly, reducing the efficiency benefit that variable displacement is meant to deliver.

Fluid and Filtration Requirements

Like other precision axial piston pumps, the A11VLO160 depends on clean hydraulic fluid within the manufacturer's specified viscosity range. Contamination is the single most common cause of premature wear in piston-swashplate interfaces, so filtration specification (commonly ISO cleanliness codes in the range recommended by Rexroth's technical documentation) should never be an afterthought during system design.

Control Signal Compatibility

If a machine's controller is expected to modulate pump displacement electronically, confirm the ordered control variant (EO/EP-type) matches the controller's output signal type and range — this is a common mismatch point during commissioning.

For more information on the A11VLO160 hydraulic pump, please visit https://www.baolilaihydraulic.com/product/.

Specifications

Selection Table

Q1: Is the A11VLO160 used in open or closed hydraulic circuits?

A1: Open circuit. It's built to draw fluid from a reservoir and return it there, as opposed to the closed-loop A4VG/A11VO-type pumps used in hydrostatic transmissions.

Q2: How do I know if my A11VLO160 needs servicing?

A2: Watch for rising case drain flow or temperature, reduced maximum output flow, unusual noise, or erratic response to control signals. Any of these warrants inspection before the pump fails outright.

Q3: How to purchase an A11VLO160 hydraulic pump?

A3: You can visit https://www.baolilaihydraulic.com/contact/ to contact us and purchase our products through various methods.

Q4: What is the price and delivery time of the A11VLO160 hydraulic pump?

A4: The specific price and delivery time will be provided based on the specific model you provide.