Ball and Roller Bearings

Bearing FitsTable 7.3 Standard fits for thrust bearings (JIS Class 0 and 6)Table 7.3 (1) Shaft fitsBearing type Load conditions FitShaft diametermmover incl.Tolerance classAll thrust bearingsCentered axial load onlyTransition fitAll sizesjs6 or h6Spherical rollerthrust bearingsCombined loadInner ring static loadInner ring rotating loadorIndeterminate loadTransition fitTransition fitTight fit200400All sizes 200 400 js6k6 or js6m6 or k6n6 or m6Table 7.3 (2) Housing fitsBearing type Load conditions FitAll thrustbearingsSphericalroller thrustbearingsCentered axial load onlyCombined loadOuter ring static loadIndeterminateload or outer ringrotating loadLoose fitTransition fitToleranceclassRemarksSelect a tolerance class that will provide clearance between outer ring and housing.H8H7K7M7Greater accuracy required with thrust ball bearingsNormal operating conditionsFor relatively large radial loadsNote: All values and fits listed in the above tables are for cast iron or steel housings.Table 7.4 Fits for electric motor bearingsBearing typeDeep grooveball bearingsCylindricalroller bearingsShaft fitsShaft diameter mmover incl. Tolerance class 1818 100100 160 4040 160160 200j5k5m5k5m5n6Housing fitsHousing borediameter Tolerance classAll sizesAll sizesH6 or J6H6 or J6A-53