R902406178 A10VSO10 Pump: Replacement Models & Price

The R902406178 A10VSO10 pump is a Bosch Rexroth material number for a size-10 variable displacement axial piston pump. When this unit fails, most buyers ask the same two questions: which model can directly replace it, and what should it cost. Both answers depend on one detail that is easy to overlook — the control option code on the nameplate.

This guide explains how to decode the number, which replacement paths are technically safe, and how to get a quotation that actually matches your machine. If you already have the nameplate in hand, you can skip ahead to the replacement section.

What Is R902406178? Decoding the A10VSO10 Pump Code

The A10VSO series is Rexroth's swashplate-design axial piston pump for open circuits. It is rated at 280 bar continuous pressure with 350 bar peak capability, and it is produced in sizes 10, 18, 28, 45, 71, 100, and 140. Size 10 is the smallest frame, delivering roughly 9.8 cm³ per revolution — about 14 L/min at 1500 rpm.

Every character after the slash in the part number defines the exact configuration. A typical designation reads A10VSO10DFR1/31R-VSC12K02, and each block matters:

In our experience handling MRO inquiries, the most expensive mistake is ordering by material number alone. Two pumps with the same R-number can exist with different rotation or control variants. Always photograph the full nameplate before requesting a replacement.

How to Match the Control Option Before Replacing

The control option decides how the pump reacts to your system, so it must be replaced like-for-like. The common A10VSO10 options cover different machine demands:

• DR / DRG – pressure compensator; DRG adds remote pressure adjustment through the X port.

• DFR / DFR1 – flow-pressure control with load-sensing logic, standard differential around 14 bar; DFR1 handles the LS signal differently for systems that unload it.

• DFLR – pressure, flow, and power control combined, keeping drive torque constant.

• DFE / electro-hydraulic options – for machines that steer the pump electronically.

A practical check: look at the ports on your existing compensator. If the unit has an external LS line and an X port, you are almost certainly looking at DFR or DFR1. If the compensator is compact with no external signal lines, DR is more likely. When in doubt, send a nameplate photo rather than guessing — a mismatched control option will run, but it will not regulate correctly.

Replacement Models and Interchangeability Options

There are three realistic replacement paths for the R902406178 A10VSO10 pump, each with a different cost and risk profile.

1. Same-number genuine or sourced original (lowest engineering risk).

If your machine must stay OEM-identical, source the exact R902406178 specification. This suits warranty-sensitive equipment and machines with tight acceptance criteria. Lead times through official channels can stretch to multiple weeks or months depending on region.

2. Same-series configuration swap (most common path).

Any A10VSO10 size-10 pump with matching control option, rotation, shaft, and flange can replace the failed unit. For example, an A10VSO10DFR1/31 with identical shaft code is functionally interchangeable even if the material number differs. This is where most buyers find savings of 30–50% versus OEM channel pricing.

3. Premium aftermarket rebuild or equivalent unit.

High-quality aftermarket A10VSO10 units are widely available for series 31. The evaluation criteria that matter are volumetric efficiency at pressure, compensator response calibration, and seal material (FKM/Viton for hot or synthetic circuits). A thorough supplier should test every unit at rated pressure and map flow across the RPM range before shipping.

One warning from the field: do not substitute a size-18 pump "because it fits the flange." The mounting interface may match, but the higher displacement overloads the motor and changes compensator behavior. Frame size must stay at 10.

Where the A10VSO10 Pump Works Best

Size 10 is the compact end of the family, and knowing its typical duty helps you judge whether a replacement or an upgrade makes sense:

• Injection molding machines – small auxiliary circuits for ejector, feed, or core-pull functions.

• CNC machine tools and machining centers – clamp, tool changer, and lubrication circuits needing quiet, low-pulsation flow.

• Test benches and laboratory power units – where precise pressure regulation matters more than raw flow.

• Compact industrial power packs – space-limited installations where a 280-bar open circuit is required.

If your application has grown beyond the original duty — higher flow demand, added actuators, or continuous duty near peak pressure — it may be worth discussing a size-18 or DFLR-controlled alternative with your supplier rather than replacing like-for-like.

Price Drivers and How to Get an Accurate Quote

There is no single fixed market price for this pump, and any listing without a configuration breakdown should be treated with caution. Quotations typically vary with:

• Configuration: control option and shaft code can shift the price meaningfully within the same size.

• Sourcing channel: OEM distribution, independent sourcing, and premium aftermarket differ in cost and lead time.

• Order quantity: single emergency units cost proportionally more than planned MRO batches.

• Testing and documentation: units shipped with test reports and efficiency mapping carry a premium, which is usually justified on critical machines.

To receive a same-day quotation for the R902406178 A10VSO10 pump, send your full model code, nameplate photo, and required quantity. A competent supplier will confirm the exact configuration first — not just the material number — and then quote options across genuine, interchangeable, and aftermarket paths with stated lead times. For guidance on evaluating suppliers, see our Bosch Rexroth pump replacement supplier selection guide, and browse the Naboer Rexroth product catalog for related pumps and valves.

FAQ

Q1: Can I replace R902406178 with a different Rexroth material number?

Yes, if the size (A10VSO10), control option, rotation direction, shaft, and flange codes all match. Function depends on the full model code, not only the R-number.

Q2: What is the difference between /30 and /31 series?

/31 is the newer component series with revised internal parts. Some internal components are not interchangeable between /30 and /31, so replacements should stay within your pump's original series.

Q3: What information do you need for a quotation?

A clear nameplate photo or the complete model code, quantity, and target delivery region. With this, configuration and lead time can usually be confirmed within one business day.

Q4: Is a premium aftermarket A10VSO10 pump reliable?

A properly built and tested unit is, provided the supplier runs full-pressure testing and can document volumetric efficiency. Ask for the test procedure before ordering — reputable suppliers answer this question directly.

Reference Sources

1. Bosch Rexroth — A10VSO series 31 axial piston variable pump data sheets and operating instructions (boschrexroth.com)

2. Bosch Rexroth online store — product entry for R902406178 / A10VSO10 configurations (store.boschrexroth.com)

3. ISO 4413 — Hydraulic fluid power: General rules and safety requirements for systems and their components

4. Naboer — Bosch Rexroth Pump Replacement Supplier: The Expert Choice Guide (www.naboer.com.cn)