Ball Bearing

Explain the bearing series for ball bearings?

I need explanation of the bearing series of ball bearing sering which is related to mechanical engineering field.

PL. CLICK LINK BELOW:

http://www.mrcbearingservices.com/docs/Type5000C.pdf

http://www.nmbtech.com/nmb_bearings.html#metric(FOR SELECTION)

http://www.nationalprecision.com/bb6.htm

http://www.bearingcie.com/self_aligning_ball_bearings.htm

http://www.ntnamerica.com/

There are lot of series with single and multiple suffixes,prefixes and are different for different companies like:skf,fag,timken,NBC ETC.

(6201.... MOST COMMON BALL BRG. SERIES,
6301.....DEEP GROOVE BALL BRG.
7201.....SINGLE ROW ANGULAR CONTACT BALL BEARING.
7201B..SINGLE ROW ANGULAR CONTACT BALL BEARING(PAIR MOUNTING)
3201....DOUBLE ROW ANGULAR CONTACT BALL BEARING
3301....SINGLE ROW ANGULAR CONTACT BALL BEARING(MODERATE AND HEAVY LOAD)
2301....DOUBLE ROW SELF ALIGNING BALL BEARING.)

how its made ball bearings