Posts: 2,731
Threads: 0
Joined: Dec 2005
I am looking to pick up some spare bearings for a couple of Porter Cable 690 series routers. I would have thought that there would be some cross reference between PC part numbers and standard bearing numbers somewhere on the web. If it exists, I could not find it. Here are the two PC part numbers:
878065 fan bearing
855284 commutator bearing
I know I can take the unit apart and remove the bearings and measure them, but I'd like to have the replacements on hand before I disassemble the units.
Your assistance would be greatly appreciated.
Posts: 12,902
Threads: 0
Joined: Jan 2010
Location: Lewiston, NY
(Yesterday, 01:20 PM)Philip1231 Wrote: I am looking to pick up some spare bearings for a couple of Porter Cable 690 series routers. I would have thought that there would be some cross reference between PC part numbers and standard bearing numbers somewhere on the web. If it exists, I could not find it. Here are the two PC part numbers:
878065 fan bearing
855284 commutator bearing
I know I can take the unit apart and remove the bearings and measure them, but I'd like to have the replacements on hand before I disassemble the units.
Your assistance would be greatly appreciated.
Here's the second one:
855284
And this one is said to be correct for the other end:
878064SV
John
Posts: 5,638
Threads: 0
Joined: Nov 2004
(Yesterday, 03:18 PM)jteneyck Wrote: Here's the second one: 855284
And this one is said to be correct for the other end: 878064SV
John
Those 608 roller skate bearings are very common, that seller is getting the PC premium but a good source to back into the numbers.
If I was replacing them I would get an Abec rated bearing like an Abec-5 as they are not much more expensive.
Posts: 2,731
Threads: 0
Joined: Dec 2005
John/Brian: thanks for that feedback. Assuming we can trust the bearing numbers on the bearings shown in the pictures on the Amazon website (and assuming they are not just stock bearing photos). It looks like both the 608z and 6202rs are the standard bearing numbers and these are widely available, and at various quality levels. I am also assuming that I could substitute a 608zz for the 608z. I did find the exact OEM replacement bearings on ebay, but I suspect these bearings have been sitting on a shelf for many years and I've heard that there is an expiration date on these types of bearings due to the aging of the grease. If I am going to the trouble of changing the bearings, I'd like to get "fresh" bearings. Phil
