... 2.Through ISO9001:2008 3.Large stock and quick delivery cageDeep groove ball bearings generally USES the steel plate stamping ... 056026130200333.086028140210333.96030150225354.8clearanceStandard deep groove ball bearings are standard (CN), C2, C3, C4 and C5 level internal clearance, all ... is too small, can make the sliding between the ball and raceway, be the cause of the scratch. Especially the ...