Which Pump Bearings & Seals?

  • Last Post 24 February 2021
  • Topic Is Solved
PaulTX posted this 22 February 2021

I have a Hayward TriStar 2-speed SP32152EE 1.5HP pump that has an AOSmith/Century motor on it,  Motor is part# 7-K56AA14A04-05 (see image below).  Pump is starting to whine pretty badly and I want to overhaul it if possible with bearings & seals but I can't find the correct info for those parts.  I did look in the INYO reference here but didn't see it.

Can anyone tell me which parts I need?



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PaulTX posted this 23 February 2021

FYI I contacted Century (RegalBeloit) and they couldn't/wouldn't provide the info.  They told me to contact Hayward.

I contacted Hayward, and a very helpful guy named Scott replied almost immediately with:

The bearing size for the shaft end is 304 and the other side
is 203.

InyoRob posted this 24 February 2021

Below are the part numbers for the bearings and seals.

304 Bearing - Part Number 5270-36

203 Bearing - Part Number 5270-31

Tri-Star Seal Kit - Part Number GOKIT81

PaulTX posted this 24 February 2021

Unfortunately the Hayward guy was wrong.  I decided to just pull them and measure them before ordering and I'm glad I did.  They are both 203 17mm x 40mm x 12mm double sealed bearings.  So from your store they are both the 203 Bearing.  

So to reiterate, you need 2 each of the 203 17 x 40 x 12mm bearing for this motor part#.

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InyoRob posted this 24 February 2021

Thank you for the feedback, Paul. There are cases where A.O. Smith/Century changed the bearings from year to year in the same motor. It is always a good idea to pull the bearings to confirm.

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