NS-289-5

Engineering Data4.1 Suggested shaft tolerances using set screw locking bearings.Table 14: Suggested shaft tolerances for set screw locking bearing units.dn Valued (mm) X rev/mind=bore in mm.n=bearing RPM250000170000150000100000700040000m6k6j7h7h8h9On the calculation of the dnvalue, apply the bore dimensionof the metric series in the samegroup.C/PC = bearing radial load ratingP = equivalent radial load applied to bearingNote: For low speed and/or low load applications, loose fits are adequate.However, for higher speed and/or load applications, tighter fits are suggested.4.2 Suggested shaft tolerances using eccentric locking collar bearings.Table 15: Suggested shaft tolerances for eccentric locking collar bearing units.dn Valued (mm) X rev/mind=bore in mm.n=bearing RPM250000170000150000100000700040000m6k6j7h7h8h9On the calculation of the dnvalue, apply the bore dimensionof the metric series in the samegroup.C/PC = bearing radial load ratingP = equivalent radial load applied to bearingAs in the case of the set screw system, it is usual under normal operating conditions, to fit the inner ring to the shaft by means of a clearance fit forease of assembly.Table 15.1: Eccentric locking collar shaft tolerance quick reference chart.134