Rexroth A4VG A4VTG A10VG ALA10VO hydraulic pumps for Bucher equipment 15055893-2 15051677-0 15056089-0 15058240-0 15060295-0 7557-6521 7557-6716

If you operate or maintain Bucher equipment — whether it's a municipal sweeper, a snow blower, an agricultural implement, or specialized industrial machinery — chances are good that a Bosch Rexroth axial piston pump sits at the heart of its hydraulic drive system. The A4VG, A4VTG, A10VG, and A10VO series are among the most widely specified variable displacement pumps in mobile hydraulics, and understanding how they work, where they differ, and how to keep them running is essential for anyone responsible for equipment uptime.

A4VG Series

The A4VG is a closed-circuit pump most often found driving hydrostatic travel systems — think wheel loaders, compact track machines, and similar Bucher mobile platforms. It's frequently paired in a tandem arrangement with a second variable displacement unit and matched to A6VE or similar variable motors to form a complete hydrostatic transmission.

A4VTG Series

The A4VTG is closely related to the A4VG but is purpose-built for combined travel-and-work applications, commonly seen in machines that need simultaneous propulsion and implement operation — a common requirement in Bucher's municipal and vegetation-control equipment. It typically integrates a through-drive so a second pump section can be mounted directly, powering auxiliary hydraulic functions from the same input shaft.

A10VG Series

The A10VG is a variable displacement pump generally used in closed-circuit applications for driving working hydraulics — lift functions, auxiliary cylinders, and rotary actuators — rather than the closed-loop travel drive itself. It's commonly found alongside an A4VG in the same machine, with the A4VG handling propulsion and the A10VG (or A10VO) handling implement functions.

A10VO Series

The A10VO is one of the most widely used variable pumps across mobile and industrial hydraulics generally, and it appears in many Bucher machines as the workhorse for open-circuit implement circuits.

How These Pumps Work Together in a Bucher Hydraulic System

A typical mid-size Bucher machine — say, a compact municipal sweeper or a multi-tool carrier — often runs a layered pump arrangement:

1. A4VG or A4VTG drives the hydrostatic travel system, giving the operator smooth, stepless variable ground speed control in both directions.

2. A10VG or A10VO, mounted through-drive off the travel pump or driven independently, supplies flow to the lift, tilt, brush, or auxiliary implement circuits.

3. A charge pump, integrated into the A4VG/A4VTG housing, maintains makeup oil and control pressure for the closed-loop side.

Choosing the Right Replacement Pump

When sourcing a replacement pump for Bucher equipment, matching more than just the model number matters:

1. Displacement (frame size) must match the original to preserve travel speed and implement flow rates

2. Control type (EP, hydraulic, DFR, LR3, etc.) must match the machine's existing valve and electrical architecture

3. Shaft and mounting flange configuration must match the coupling and PTO or gearbox interface

4. Charge pump and auxiliary pump options, if originally fitted, need to be specified again on the replacement

Because Rexroth pumps are built in many sub-variants within each series, always cross-reference the full model code (stamped on the pump nameplate) rather than ordering by series name alone.

For more brand and equipment models, please visit https://www.baolilaihydraulic.com/brand/

Q1: Are A4VG and A4VTG pumps interchangeable?

A1: Not generally. While they share a common design platform, the A4VTG's through-drive and dual-function layout make it mechanically and hydraulically distinct from the standard A4VG. Always confirm against the original nameplate and machine hydraulic schematic.

Q2: How do I know which type of control my Bucher machine needs?

A2: Match the existing pump's control designation exactly, and cross-check the electrical or hydraulic control signal your machine's controller or valve bank already sends — swapping control types without also updating wiring or pilot circuits will cause the machine to malfunction.

Q3: What is the price and delivery time of the Rexroth hydraulic pump for the Bucher equipment?

A3: The specific price and delivery time will depend on the equipment model or specific product model you provide.

Q4: How to purchase a Rexroth hydraulic pump for the Bucher equipment?

A4: You can visit https://www.baolilaihydraulic.com/contact/ to contact us and purchase our products through various methods.