Would any of these part numbers mean anything to anyone out there?

HP15D2A009, HO30D1A013, HR07D1A005

or the term Pumax PV
I'm working with a bill of material that some of the info is missing-trying to locate a manufacturer of these hydraulic pumps.

Thanks,
Maytag

Google search results

axial-piston pump REXROTH A4VSO 71 DR --- PUMAX?? HR07D1A005

These links seem doubtful...

http://www.pumax.be/perso-28517.htm
chased link ...
http://www.putzmeister.de/cps/...l/index_ENU_HTML.htm
and again..
http://www.putzmeister.com/index.cfm

Regards Woody

This message has been edited. Last edited by: Woodygb,

Thanks for your suggestions, I believe I'm looking at a designers reference numbers and I'm missing some of the documents.

Maytag

Maytag, do you use this A4VSO pump on putzmeister concrete pumps? This pump can go over-center? If yes, then wow(DS?... as far as I can remember can be a pump or motor in a secondary control system)...

This is all steel mill equipment-could not find any connection between the part numbers and any specific pumps or any pump manufacturers.

Maytag

I did not go over the links but since Woodygb relates it to a rexroth A4VSO 71 DR, the other important missing numbers are the rotation, shaft type and design number. But if the pump still has a nameplate, then it might help. I hope you have a rexroth catalogue for pumps... everything is in there.

I have an A10VSO model concise catalogue which I could relate to a A4VSO(rexroth pattern of pump part numbers are almost the same). A4VS is the model(O is indication for open loop), 71 is the displacement, and DR is the control option which I think is just a pressure control(compensator). The next possible number is the series number(two numbers) after a slash, then followed by the rotation(R or L), dash then the seals(P-perbunan, V-viton). Mounting options follows like a C(for SAE 2 hole) or blank/D for SAE 4 hole[71 normally has SAE 2 hole]. An NOO indicates a pump without thru drive options. This may not be accurate pattern, but maybe can help. Try this sample part number : A4VSO71DR/**R-VSC**NOO, the first 2 asterisk is the series number, and the next 2 asterisk is the port for service ports(either the Suction and the discharge ports[S or B] are on the sides or rear). The S between the V and C is the splined shaft.

BTW

PUMAX is more than likely PUMP AXIAL & PV = Pump Variable
Link to mention of.....
HR07D1A005

Regards Woody

This message has been edited. Last edited by: Woodygb,

Thanks for the help but I believe I'll have to wait for a complete updated BOM comes as I need complete catalog or part numbers in order to obtain spares.

Maytag

Wow, you are very good Woodygb!!!

I think, the links you mentioned helped so much. The pump is A4VSO71DR/**RPPB**NOO.
The A4V pumps are called hydrostatic transmission in-line piston pumps which are normally used for close loop applications but can be modified for use in open loop by just "probably" changing the end cover enlarging the inlet port. This pump's piston are slightly angle to the axis of rotation rather than parralel and uses the centrifugal force so that the slipper pad is kept in contact with the swashplate at higher drive speeds. I am just adding a little info about this type of pump for others who don't know yet.