Selecting Bearings for Shafts

Can you provide any additional information?

1. What is the application? Is it a spindle, a drive shaft, etc.
2. What kinds of loads are there? Are you looking for a thrust bearing or a radial bearing?
3. Are you designing a shaft around a bearing or trying to select a bearing for an existing shaft or is this a new design?
   

If all you are trying to do is get tolerance information then any bearing manufacturer will have this information in their catalog. They will provide both the bearing tolerance as well as the shaft and housing tolerances. Any additional information you have would help answer your question better.

try to

http://www.tribology-abc.com/

www.skf.com

Contact a bearing company and one of their Application Engineers will gladly figure it out for you.

And they do not charge for this service.

An excellent bearing source, with a broad list of technical selection information, and good technical help is Dynaroll.

http://www.dynaroll.com/tech_info.htm

& i ALWAYS keep a copy of the FAG brand bearing catalog @ my desk; they have proved most useful.

Assuming you are fitting a standard roller/ball bearing without any design, you would need to measure the shaft diameter, housing diameter and thickness. basically you can choose a bearing by just knowing the geometry the bearing seat in. It would be fine if your bearing just mounted as a support for toys. gates or some home fix that do not pose any hazard if the bearing spoil.

selecting bearings for shafts, can be simple and also an involved exercise, depending upon your application and what not.

the bearing specifications and their dimensional apects can be gotten from respective catalogues, which in earlier days were printed in hard copies form. now a days come in CD form. these are user friendly, so it can be learnt by almost anyone easily. the known brand manufacturers are SKF, FAG, and many others. there are so many aspects one has to know about the application before one can select a proper bearing.

the main aspects are - loadings, speed if it is a rotating application, temperature under which it is going to operate, how it is to be lubricated, whether it is a general use application or a precision application. also the type of bearing that would require, with a metal cage or plastic cage (It is a common term used here), otherwise it is an engineering plastic (sintered/moulded) component used here. hope this would not confuse you in any way. I have tried to put in short a general procedure being used when selecting any particular bearing.

good luck with your bearing selection which is exact for the application.