We've discussed this before (and I have a paper on it somewhere I think), but can someone give me the 'normal' bearing number for a 65BC03J30 ??

Better yet, if you have a link to an on-line resource somewhere that explains the deciphering of such numbers (or if you can email me a PDF file, that'd be great too).....

OK, I just 'Googled' this number and came up with the following:

http://www.conweb.com/tblefile/bear300.shtml

http://www.eng-tips.com/viewthread.cfm?qid=52747

Reliance Web Site

I can't remember where I found this, but it should help.
Dean

AFBMA_to_SKF.doc (46 Kb, 123 downloads) AFBMA to SKF

The link provides all the info you need.

Just to go through your example quickly

AFMBA number 65BC03 J30 corresponds to catalog number 6313 C3

The 65 in the AFBMA number tells us bore 65mm. The last two digits of the catalog number are bore in mm divided by 5 i.e. 65 / 5 = 13

The BC in the AFBMA tells us conrad deep groove. The first digit 6 in catalog number corresponds to conrad deep groove bearing.

The 03 in AFBMAnumbers tells us dimension series 3. This is the same info convered by second digit of catalog number is 3

J tells us stell cage. Not generally in the simple catalog number.

3 tells us C3 clearance looser than normal. Same thing as the trailing C3 in the catalogue number.

The 0 tells us tolerance class 0. Not usually in the simple catalog number.

This was the link I had. The doc file above is a little more in depth, I think.

US Motors

The way I was taught to decipher this bearing:
BC = 6000 series bearing
03 = 6300
65/5 = 13
The bearing is a 6313 bearing.