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View Full Version : PORC SYE bearing and seal sizes?


Mtb Jak
December 2nd, 2017, 13:33
This PORC hd SYE was installed 9 years ago. Np231 2000 XJ

Put about 80k on it and it is vibrating like crazy. The output shaft has a bunch of play in it and looks like it's weeping fluid too.

I seem to not be able to find any insight to which bearing and seal it takes.

Mtb Jak
December 2nd, 2017, 17:29
Originally Posted by rstarch345
Since PORC has the history of being difficult to talk to and their seals are not marked with a number that can be crossed, I went on a search to find what I could find.

These have all been verified to work.

Seal
OD - 2.7540 in.
ID/Shaft - 1.8430 in.
Width - .5 in.
---- National 470331N, Single Seal, Double lip
---- National 3946, Double Seal, Double lip, most closely resembles original
---- SKF 18472, Flange, Single Seal, Double lip
---- National 714675, Flange, Single Seal, Double lip

Bearing
---- 6207 (35mmx72mmx17mm) Open


Found this and ordered the parts!

techno1154
December 2nd, 2017, 20:24
Originally Posted by rstarch345
Since PORC has the history of being difficult to talk to and their seals are not marked with a number that can be crossed, I went on a search to find what I could find.

These have all been verified to work.

Seal
OD - 2.7540 in.
ID/Shaft - 1.8430 in.
Width - .5 in.
---- National 470331N, Single Seal, Double lip
---- National 3946, Double Seal, Double lip, most closely resembles original
---- SKF 18472, Flange, Single Seal, Double lip
---- National 714675, Flange, Single Seal, Double lip

Bearing
---- 6207 (35mmx72mmx17mm) Open


Found this and ordered the parts!


Good to know.

That same unit installed on my XJ about 2008 or 2009 have a leaking output seal which need to be replaced. The bearing though is still tight and noise free.