Bearings have number,what significance it has ?

Question

Is there any relation in bearing number and its use or size ?what does a bearing number denotes?

Answer 1

Yes, it does have.

as described by Shrikant.

Answer 2

last two digits multiplied by 5 is the inner dia of bearing.

e.g. if brg number is 6208 (ball bearing) bearing ID will be 08X5=40mm

other dimessions r to be remembered.

series start with

6=ball brgs

7=angular contact

32=taper roller etc