The Ford Barn

marc silva · 10-26-2016, 09:47 PM

A month or two ago someone posted the O.D. and the I.D of a sealed bearing for the front of a water pump. I can't for the life of me find that thread. I want to re-build my spare water pump and use a sealed front bearing. I am hoping that it will last longer and stop the end play. The one I have I believe had the front bearing get worn or loosen causing the shaft to move around intern causing the seal and the rear bushing to fail causing a leak out of the grease fitting.It is the screw type cup fitting you turn a little to force grease into the bushing. Am I out of whack on my theory? I have two pumps and am running my other one but want to fix this one to put back under the seat for the spare.

Thanks for your advice

Marc

Synchro909 · 10-26-2016, 10:51 PM

I run a 5/8" X 1 3/8" X 11mm (7/16") sealed bearing at the front of the shaft.
Because we have been metric for about 50 years, imperial sized bearings are not so easy to get but you shoiuldn't have any trouble. FWIW, 16 mm is only 0.0012" larger than 5/8". With a slight knurl of the shaft, you'd be OK there.
1 3/8" is only 0.003 under 35 mm. With a little bearing retainer, that should be good too. The bearing I am using is by KSM (Japan) number 1623-2RS.

MAG · 10-27-2016, 12:14 PM

Sponsored Links (Register now to hide all advertisements)

One of my water pumps has this bearing in front:
SST 99502H Germany.
9502H 6200 Series Radial Bearings, 15.875 mm ID, 34.93 mm OD, 11 mm Width, Double Seal

10-26-2016, 09:47 PM	#1
marc silva Senior Member Join Date: Apr 2013 Location: santa rosa ca Posts: 257	Sealed front water pump bearing size A month or two ago someone posted the O.D. and the I.D of a sealed bearing for the front of a water pump. I can't for the life of me find that thread. I want to re-build my spare water pump and use a sealed front bearing. I am hoping that it will last longer and stop the end play. The one I have I believe had the front bearing get worn or loosen causing the shaft to move around intern causing the seal and the rear bushing to fail causing a leak out of the grease fitting.It is the screw type cup fitting you turn a little to force grease into the bushing. Am I out of whack on my theory? I have two pumps and am running my other one but want to fix this one to put back under the seat for the spare. Thanks for your advice Marc

10-26-2016, 10:51 PM	#2
Synchro909 Senior Member Join Date: Jun 2014 Location: Melbourne, Australia Posts: 7,496	Re: Sealed front water pump bearing size I run a 5/8" X 1 3/8" X 11mm (7/16") sealed bearing at the front of the shaft. Because we have been metric for about 50 years, imperial sized bearings are not so easy to get but you shoiuldn't have any trouble. FWIW, 16 mm is only 0.0012" larger than 5/8". With a slight knurl of the shaft, you'd be OK there. 1 3/8" is only 0.003 under 35 mm. With a little bearing retainer, that should be good too. The bearing I am using is by KSM (Japan) number 1623-2RS. __________________ I'm part of the only ever generation with an analogue childhood and a digital adulthood.

10-27-2016, 12:14 PM	#3
MAG Senior Member Join Date: May 2010 Location: Austin, Texas Posts: 925	Re: Sealed front water pump bearing size Sponsored Links (Register now to hide all advertisements) One of my water pumps has this bearing in front: SST 99502H Germany. 9502H 6200 Series Radial Bearings, 15.875 mm ID, 34.93 mm OD, 11 mm Width, Double Seal __________________ I noticed the harder I work the luckier I get!