Bosch Rexroth Pump Guide: A10VSO, A4VG & A11VO Series Explained
Bosch Rexroth is one of the biggest names in industrial and mobile hydraulics, and its axial piston pumps power everything from injection molding machines to excavators. If you are sourcing a seal kit or replacement, reading the Rexroth series code correctly tells you the pump family, displacement, and control type. This guide breaks down the main Bosch Rexroth pump families and how to decode them.
Bosch Rexroth pump series at a glance
RestoPower stocks aftermarket, OEM-equivalent parts for the most common Rexroth series:
- A10VSO – variable-displacement axial piston pump for open-circuit industrial systems.
- A4VG – variable pump for closed-circuit hydrostatic drives in mobile machinery.
- A11VO – high-pressure variable-displacement pump for demanding open-circuit applications.
- A7VO – bent-axis variable-displacement pump for high-efficiency open circuits.
- A10 & Uchida AP2D12 – compact piston pumps common on mini-excavators and small equipment.
How to read a Rexroth pump model number
Rexroth codes are read left to right. The leading letters identify the pump family (for example, A10VSO or A4VG), followed by numbers that indicate frame size and displacement, then characters that define the control type, pressure rating, shaft, and porting. Because Rexroth offers many control and port options, always record the complete nameplate code before ordering a seal kit or piston pump part.
Where to find your Rexroth model number
Look for the metal nameplate on the pump housing. It lists the full type code plus a material or serial number. If the plate is missing, note the shaft type, port layout, and any part numbers cast into the body — our team can often cross-reference from those details.
Seal kits and rebuild parts
Most Rexroth service jobs start with the correct Rexroth seal kit for your exact pump family and frame size. We carry seal kits for A10VSO, A4VG, A11VO, and A7VO units, plus rotary groups, shafts, and rebuild components for Bosch Rexroth piston pumps.
Find your Bosch Rexroth parts at RestoPower
We stock aftermarket, OEM-equivalent Rexroth piston pump parts and Rexroth seal kits, backed by a 2-year no-hassle warranty and same or next-day shipping from Lake Orion, MI. Browse the full Bosch Rexroth parts collection to shop by series. Sourcing hard-to-find and obsolete Bosch Rexroth parts is one of our specialties. Browse all brands, request a same-day quote, or download Bosch Rexroth parts catalogs and rebuild guides for exploded views and service data.
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Frequently asked questions
Which Rexroth series does RestoPower carry parts for?
We stock aftermarket OEM-equivalent parts for Bosch Rexroth A10VSO, A4VG, A11VO, and A7VO piston pump series, plus A10 and Uchida AP2D12 pumps.
Is Rexroth the same as Bosch Rexroth?
Yes. Rexroth is a subsidiary of Bosch and operates as Bosch Rexroth. We carry aftermarket parts compatible with all Rexroth and Bosch Rexroth branded equipment.
Can you source obsolete Rexroth parts?
Yes. Hard-to-find and obsolete hydraulic parts are a RestoPower specialty — send us your full type code and we will locate the correct parts.
What warranty do Rexroth parts carry?
All of our aftermarket Rexroth parts carry a 2-year no-hassle replacement warranty, with in-stock items shipping same or next business day.