Rexroth A10VSO28DFR1/31R-PPA12K25-S1134 Seal Kit - A10VSO NG28 Piston Pump

Rexroth A10VSO28DFR1/31R-PPA12K25-S1134 Seal Kit is a new OEM or aftermarket equivalent complete seal kit for the Bosch Rexroth A10VSO28DFR1/31R-PPA12K25-S1134 axial piston variable pump, supplied by RestoPower. Built to meet or exceed the original Bosch Rexroth specification for a precise, dependable fit. The code on your nameplate decodes to an NG 28 frame, 28 cm3/rev (1.71 in3/rev), 13.3 GPM at 1800 rpm, series 31, 4000 psi (280 bar) nominal and 5100 psi (350 bar) maximum, pressure and flow control, X-T closed (DFR1), clockwise rotation viewed on the drive shaft, NBR (nitrile) seals, shaft seal in FKM, parallel keyed shaft to DIN 6885 (metric), ISO 2-hole mounting flange, SAE flange ports on opposite sides, metric fastening thread and side ported.

Specifications

Compatible With

• Bosch Rexroth A10VSO28DFR1/31R-PPA12K25-S1134
• Rexroth material number R902407880, the R number on the nameplate sticker
• Rexroth A10VSO 28 and A10VO 28 pumps of the same frame size
• NG 28 A10V series axial piston variable pumps, series 31
• Seal kit fitment is set by frame size and design generation. This is the 31 design, and a 31 design kit will not seal the other generation of the same frame
• Control device, rotation, shaft, flange, port position and through drive do not change the seal kit
• Confirm against the full type code stamped on your pump nameplate before ordering

Cross Reference

A10V28DFR1 31R-PPA12K25-S1134, A10V28DFR1-31R-PPA12K25-S1134, A10V28DFR1/31R-PPA12K25-S1134, A10V28DFR131RPPA12K25S1134, A10VO28DFR1 31R-PPA12K25-S1134, A10VO28DFR1-31R-PPA12K25-S1134, A10VO28DFR1/31R-PPA12K25-S1134, A10VO28DFR131RPPA12K25S1134, A10VSO28DFR1 31R-PPA12K25-S1134, A10VSO28DFR1-31R-PPA12K25-S1134, A10VSO28DFR1/31R-PPA12K25-S1134, A10VSO28DFR131RPPA12K25S1134, Rexroth A10VSO28DFR1/31R-PPA12K25-S1134, Bosch Rexroth A10VSO28DFR1/31R-PPA12K25-S1134, Brueninghaus Hydromatik A10VSO28DFR1/31R-PPA12K25-S1134, A10VSO28, A10VO28, A10V28, A10V028, R902407880, Rexroth R902407880, Bosch Rexroth R902407880

Common Applications

• Industrial hydraulic power units and press machinery
• Injection molding, machine tool and test stand hydraulics
• Construction, agriculture and material handling equipment
• Mobile equipment, drilling rigs and auxiliary drives

Guides & Catalogs

Rebuild Service Available

Have the actual A10VSO28DFR1/31R-PPA12K25-S1134 pump that needs service? RestoPower can fully rebuild your Rexroth A10 axial piston pump to factory specification, rotating group, swashplate, bearings, control and all. See our full repair and rebuild service, or send your unit in for a quote at info@restopower.com or (810) 882-1171.

Frequently Asked Questions

Will this seal kit fit my Rexroth A10VSO28DFR1/31R-PPA12K25-S1134?
Yes. On the A10VO and A10VSO the seal kit is keyed to the frame size, and your code is an NG 28. The control device, series index, rotation, shaft, mounting flange, port position and through drive do not change which kit you need. Send the full code from your nameplate to info@restopower.com and we will confirm fitment the same business day.

What is R902407880?
That is the Bosch Rexroth material number for this exact build, the R number printed on the pump nameplate sticker next to the type code. If the sticker is gone, the type code stamped into the housing is enough for us to identify the kit.

Is this genuine OEM or aftermarket?
New OEM Equivalent aftermarket, manufactured to meet or exceed the original Bosch Rexroth specification and backed by our 2-year warranty. We also source genuine new OEM parts when a job calls for it, just ask.

Should I take Viton or Buna-N?
Position 08 of your type code says the factory built this pump with NBR (Buna-N) seals. Both materials are offered above and both fit the NG 28 31 design identically, only the elastomer differs. Viton is on the shelf and is the better choice for petroleum oil, HFD fluids and higher operating temperatures. Buna-N is the correct choice for HFA, HFB and HFC water glycol, where Viton is not suitable, and we quote it rather than stock it, so pick that option and we will come back with price and lead time. If you are unsure, send us your fluid type and we will pick.

What is in the kit?
A complete seal kit for the NG 28 A10 pump, shaft seal, all housing and cover O-rings, control and port seals and back-up rings. It does not include the rotating group, swashplate, bearings or control valve, those are quoted separately and we stock them.

About RestoPower

RestoPower specializes in hard-to-find and obsolete hydraulic components, Bosch Rexroth, Parker, Denison, Oilgear, Sundstrand, Poclain and more. Email info@restopower.com or call (810) 882-1171 for fitment help.