Bosch Rexroth A10VZG axial piston variable displacement hydraulic pump

The A10VZG is a variable-displacement axial piston pump, built by Bosch Rexroth as part of the RE 91485 product line — officially grouped together with the A10FZO, A10VZO, and A10FZG units under the heading "axial piston units for variable-speed drives."

Unlike a general-purpose industrial pump that runs continuously at a fixed motor speed, the A10VZG is purpose-built to pair with an electric motor whose speed is actively controlled — synchronous or asynchronous — as part of a coordinated drive system. Instead of throttling flow with a valve while the motor spins at full speed all day, the system slows the motor down when less flow is needed and lets the pump's displacement do the fine-tuning. That combination is where the real efficiency gains come from.

Core Technical Characteristics

Displacement and Frame Sizes

The A10VZG is offered across a range of frame sizes (referred to by Rexroth as "NG," the nominal size designation), with a superordinate size and several intermediate sizes in between — giving system designers finer control over matching pump output to the actual flow requirement of the machine, rather than jumping between widely spaced standard sizes.

Pressure Ratings

Nominal and maximum pressure ratings scale with frame size. Smaller frames in the family are rated for a nominal pressure in the low-to-mid 200 bar range with a somewhat higher peak rating, while larger frames step up into the 300+ bar range for both nominal and maximum pressure. As with any Rexroth piston pump, the exact figures depend on the specific size and control variant ordered, so the datasheet for the selected frame size should always be the final word before finalizing a design.

Speed Range and Duty Cycle

This is where the A10VZG earns its keep. It's rated for genuine start/stop operation and short-duration decompression events, with defined limits on single operating periods and maximum cycle proportion. If an application needs sustained high-speed operation for long, continuous periods rather than frequent cycling, Rexroth's own guidance typically points toward the A10VZO instead — a reminder that these two pumps, while closely related, aren't interchangeable in every application.

Control and Mounting Options

Like most pumps in the A10 platform, the A10VZG supports multiple control device options (two-point electric control at 12V or 24V, and hydraulic control variants among them), various porting configurations, and combination-pump arrangements where a second unit — another A10VZO, A10VZG, A10FZO, or A10FZG — is mounted through the primary pump's through-drive.

Installation and Maintenance Considerations

Fluid Cleanliness Is Non-Negotiable

Axial piston pumps run tight clearances between pistons and bores. Contaminated hydraulic fluid is the single most common cause of premature wear in this entire pump family, and the A10VZG is no exception — filtration specifications in the datasheet should be treated as a minimum, not a suggestion.

Respect the Duty-Cycle Limits

Because the A10VZG is rated for defined start/stop cycling rather than unlimited continuous operation, exceeding the specified operating period or cycle proportion is a common way operators unintentionally shorten pump life. If a process genuinely needs longer continuous run periods, that's a sign to reconsider whether the A10VZO is the better-suited unit.

Drain Line and Case Pressure

Like other pumps in this platform, a case drain line back to the reservoir is required, and case pressure limits need to be respected — especially in combination-pump setups where a second unit is mounted on the through-drive and case pressures can interact.

Control Fluid Supply

Where hydraulic control variants are used, pilot fluid consumption and control pressure limits need to be accounted for in the system design, not treated as an afterthought once the machine is already built.

For more information on the A10VZG hydraulic pump, please visit https://www.baolilaihydraulic.com/product/.

Specifications

1) The values are applicable:

-at an absolute pressure P_abs ≥ 1 bar at the low-pressure side (input)

-for the optimum viscosity range from v_opt = 36 to 16 mm²/s

-with hydraulic fluid based on mineral oils

2) Higher values on request

3) The limit value is only valid for a single pump, multiple pump version available on request. The load capacity of the connection parts must be considered.

Selection Table

Q1: What's the difference between "nominal pressure" and "maximum pressure" on the datasheet?

A1: Nominal pressure represents the pump's rated continuous design pressure for normal operation, while maximum pressure is the highest pressure the unit is permitted to reach, typically for short durations. Sizing a system around nominal pressure, with maximum pressure as headroom rather than a target, is standard practice.

Q2: Where can I find the exact specifications for a specific A10VZG frame size?

A2: Bosch Rexroth publishes detailed technical data — including displacement, pressure ratings by size, and control device options — in datasheet RE 91485, "Axial piston units A10FZO, A10VZO, A10FZG, A10VZG." Because values vary by frame size and control variant, that datasheet (or a conversation with a Rexroth-authorized distributor) should be the final reference before finalizing a system design.

Q3: How to purchase an A10VZG 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 A10VZG hydraulic pump?

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