Answer Posted / k.c.bhattacharjee

6307 zz indicate

bearing nomenclature indicates in such type of bearing is

1.Type Code
2.Series
3.Bore
4. Suffix


6-single row deep groove ball bearing
3-medium series
07-last two digits indicates bore dia which stand by
multiplying by 5 i.e. (07x5)=35.

(but in case last two digits is
00-10mm
01-12mm
02-15mm
03-17mm)

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