... ISO 9001 certified 3.Low noise,Stable chemical 2013 High Quality Spherical Roller Bearings Material: chrome steel STEEL NO. ... ,22206Series......22222Series,22308Series,22309Series......22320seriesSpecification:1) Open, Z, ZZ, RZ,2RZ,RS, 2RS 2) Clearance: C0, C2, C3 3 ... 6) Material: Chrome steel 157) Long life and good hand feeling Detailed size: SpecificationBoundary dimensions(mm)Weight(kg)Cylindrcal ...