Dr Phil mmkay
December 20th, 2008, 11:30 AM
So, I'm about to embark on the ever-convoluted quest to overhaul my Dirtbag and decided to do something about the seized frame bearings. Having heard from another poster on MTBR that Chris from Enduro seals and bearings will provide kits for certain frame manufacturers (http://www.enduroforkseals.com/id55.html)(Transition being one of them) and Transition stop selling '06 Dirtbag bearing kits, I thought my choice was pretty clear.
However, Chris doesn't have the older DB listed, but the kicker is according to the MTBR poster, he'll comp you a kit for free if you provide him all the specs so that he could put a kit together for a bike he doesn't have listed on their page (still no conformation on this deal yet).
Anyways, I contacted Chris with the list of my bearing numbers and according to him, two of them didn't quite match what he had. So after going back, disassembling the dust cap covers and measuring out the inner and out diameters, I did a bit of search on the web and stumbled on to this gem of knowledge (http://www.bearingstrade.com/): my bearings (the two in question) are 6001RS and 6002RS, and these numbers actually stands for certain specs (instead of just plain index number that I had previously thought). You can read about the bearing standard guide (http://www.bearingstrade.com/bearing-standards.html) here. It's certainly bookmarked on my browser!
Anyways, if anyone is out for new bearings, Chris has been extremely helpful!
Here's the standard bearing guide from the site if you don't feel like clicking on the link:
6203ZZ
6 = Type Code
2 = Series
03 = Bore
ZZ = Suffix
The method is followed universally
For the type codes
1 Self-aligning ball bearing
2 Wide self-aligning ball bearing
22 Self-aligning roller bearing
23 Wide self-aligning roller bearing
3 Double-row angular contact ball bearing
4 Double-row ball bearing
5 Thrust ball bearing
6 Single-row deep groove ball bearing
16 Thin section single-row deep groove ball bearing
7 Single-row angular contact bearing.
For an inch bearing, the first digit is R.
R Inch (non-metric) bearing.
Series identify the lightness or the heaviness.
7 Not sure
8 Extra thin section
9 Very thin section
0 Extra light
1 Extra light thrust
2 Light
3 Medium
4 Heavy
Then come the bore sizes in mm
Except for 0 through 3, the bore size is simply five times the third and fourth digits together. 0 through 3, however, are different.
00 10mm
01 12mm
02 15mm
03 17mm
The last suffix is the bearing speciality
Z Single shielded
ZZ Double shielded
RS Single sealed
However, Chris doesn't have the older DB listed, but the kicker is according to the MTBR poster, he'll comp you a kit for free if you provide him all the specs so that he could put a kit together for a bike he doesn't have listed on their page (still no conformation on this deal yet).
Anyways, I contacted Chris with the list of my bearing numbers and according to him, two of them didn't quite match what he had. So after going back, disassembling the dust cap covers and measuring out the inner and out diameters, I did a bit of search on the web and stumbled on to this gem of knowledge (http://www.bearingstrade.com/): my bearings (the two in question) are 6001RS and 6002RS, and these numbers actually stands for certain specs (instead of just plain index number that I had previously thought). You can read about the bearing standard guide (http://www.bearingstrade.com/bearing-standards.html) here. It's certainly bookmarked on my browser!
Anyways, if anyone is out for new bearings, Chris has been extremely helpful!
Here's the standard bearing guide from the site if you don't feel like clicking on the link:
6203ZZ
6 = Type Code
2 = Series
03 = Bore
ZZ = Suffix
The method is followed universally
For the type codes
1 Self-aligning ball bearing
2 Wide self-aligning ball bearing
22 Self-aligning roller bearing
23 Wide self-aligning roller bearing
3 Double-row angular contact ball bearing
4 Double-row ball bearing
5 Thrust ball bearing
6 Single-row deep groove ball bearing
16 Thin section single-row deep groove ball bearing
7 Single-row angular contact bearing.
For an inch bearing, the first digit is R.
R Inch (non-metric) bearing.
Series identify the lightness or the heaviness.
7 Not sure
8 Extra thin section
9 Very thin section
0 Extra light
1 Extra light thrust
2 Light
3 Medium
4 Heavy
Then come the bore sizes in mm
Except for 0 through 3, the bore size is simply five times the third and fourth digits together. 0 through 3, however, are different.
00 10mm
01 12mm
02 15mm
03 17mm
The last suffix is the bearing speciality
Z Single shielded
ZZ Double shielded
RS Single sealed