Is There a Bearing X-Pert in the House

[SandburRanch]

A 6203 ball bearing seems to be a common bearing for several applications. But they all seem to have other numbers and letters following the 6203. Example: 2RSJEM,
2RS,RS
2RS1

Is anyone familiar with these number/letter designations or know where there is a chart that will de-code them and tell what they mean. Thanks

 

[MF 1532]

Here are a few codes ; rs= one seal , rsz = seal on one side shield on other ,z = one shield , znj =shield on side opposite snap ring groove , n =snap ring groove onouter ring , j = steel cage . The number 2 preceeding suffix indicates double seal or double shield . I hope this helps you .:thumbsup:

 

[KWentling]

There are also C1, C2, C3, and C4 (3 and 4 are the two we work with) which refers to the internal clearance in the bearing. C3 is the most common. I have a whole page of bearing codes at work.

Kim

 

[Car Doc]

Some manufacturers have bearings made to their specs and the suffix doesn't mean anything to anyone but them better to take bearing in hand and match it up with seals/or not and dimensions.

Some have snap ring grooves and that means something sometimes also. Yes a 203 is a common bearing.

 

[westcliffe01]

Rolling bearings - SKF.com / Products / Interactive Engineering Catalogue

Go to that page, you should be able to see what the most important codes on common bearings mean. If you have the physical sizes and know the type of bearing (deep groove, angular contact, roller etc) you should be able to spec a replacement bearing.

 

[jfay]

Here is a good link to a general overview of bearing types and numbering systems used by common manufacturers.

Gregory Bender - Bearing cross reference

Also, if you are having trouble finding bearings, check out
Bearing Location Service - Timken, Ntn, Ina, Skf, Link-Belt, Dodge

They deal with all types of bearings, call you back within 30 minutes of your email and are really helpful. Not too automated, but they found me five different bearings I needed to replace in a 1950s piece of farm equipment. Highly recommend them.