Rexroth A17VO bent axis axial variable hydraulic pump

The A17VO is a variable displacement axial piston pump built in a bent axis design, manufactured by Bosch Rexroth for open-circuit hydrostatic drive systems. In plain terms: it converts rotational mechanical power (usually from a truck's PTO — power take-off) into hydraulic flow, and it can vary how much flow it produces on the fly, without changing the input speed.

Control Options: Matching the Pump to the Job

One of the reasons the A17VO shows up across so many different vehicle types is its flexibility in control strategy. Rexroth offers several controller variants, and picking the right one is arguably more important than picking the right frame size.

Pressure Control (DR)

Keeps system pressure at a set value by automatically reducing displacement as load pressure rises. Common on applications where the load varies but the plumbing shouldn't be over-pressurized — think of loading cranes lifting variable weights.

Load Sensing Control (LS)

Adjusts flow to match exactly what the actuator downstream demands, based on a signal from the load. This minimizes wasted energy and heat generation, which matters a lot on PTO-driven applications where fuel efficiency and duty cycle both count.

Electric Proportional Control (EP)

Displacement is set by an electrical signal rather than a hydraulic or mechanical one, which makes the pump easy to integrate into a vehicle's existing electronic control unit (ECU) logic. This is increasingly common as trucks add more electronic controls for emissions, telematics, and driver-assist systems.

Common Applications

The A17VO's blend of compactness, direct PTO mounting, and open-circuit flexibility makes it a natural fit for:

Heavy goods vehicles (HGVs) — auxiliary hydraulic circuits for tippers, mixers, and refuse collection bodies

Loading cranes mounted on trucks, where load-sensing control keeps lifting smooth under changing loads

Generator drives — mobile power units that need consistent hydraulic input regardless of engine speed swings

Compressor drives for mobile air systems

Fan drives and air conditioning units on commercial vehicles, where variable flow helps manage cooling without wasting engine power

Installation Considerations

A few things worth flagging before mounting or commissioning an A17VO:

Suction height matters. Rexroth specifies a maximum permissible suction height for the pump; exceeding it risks cavitation, which will shorten pump life dramatically and is a common root cause of premature failure.

Installation orientation is not arbitrary. Rexroth documentation lists recommended mounting positions, and deviating from them without checking the datasheet can affect case drain and lubrication.

Qualified personnel only. Project planning, assembly, and commissioning of the axial piston unit require the involvement of qualified personnel — this isn't boilerplate; incorrect assembly on a bent axis unit can easily lead to internal damage that isn't obvious until the pump is under load.

Thermal caution. During and shortly after the operation, there's a real risk of burns on the unit and especially on any solenoids mounted to it — worth keeping in mind for maintenance scheduling and safety briefings.

For more information on the A17VO hydraulic pump, please visit https://www.baolilaihydraulic.com/product/.

Specifications

Selection Table

Q1: Can the A17VO be used in a closed hydraulic circuit?

A1: No. The A17VO is designed specifically for open-circuit hydrostatic drives, where fluid returns to a reservoir/tank rather than flowing directly back to the pump inlet.

Q2: What causes premature failure in these pumps?

A2: Contaminated fluid and cavitation from restricted suction are by far the most common causes, followed by seal wear from thermal cycling in PTO-driven, start-stop duty cycles.

Q3: How to purchase an A17VO 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 A17VO hydraulic pump?

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