Aurora Bearing Product Catalog 319

www.aurorabearing.com • Fax 630-859-0971 116 SUGGESTED SHAFT SIZES Metric Spherical Plain Bearings ISO f6: Recommended for application where movement of the shaft within the bore of the ball is expected and desired ISO g6: Recommended for applications where minor movement is expected or tolerable. Sometimes referred to as “push fit”. ISO h6: Recommended for applications where minor movement is not desired but is tolerable. ISO m6: Recommended for applications where movement between shaft and bearing bore is not desired, and an interference fit is required. Sometimes referred to as “press fit”. NOTE: Even with m6 fit, under high loads, movement may still occur between shaft and ball bore. SHAFT DESIGN: It is generally recommended that shafts or pins be heat treated to a surface hardness of HRc 55 minimum, and have a surface finish of 32 rms or micro inches aa (arithmetic average). In applications with light loads and interference fit, a fully hardened shaft may not be necessary, but is still recommended. Under very heavy loads, an interference fit is no guarantee that there will be no movement of the shaft within the ball bore. Nominal Bore ISO f6 ISO g6 ISO h6 ISO m6 Max. Max. Max. Max. Min. Min. Min. Min. DIMENSIONS IN MILLIMETERS 3 2.990 2.982 2.996 2.988 3.000 2.992 3.012 3.004 5 4.990 4.982 4.996 4.988 5.000 4.992 5.012 5.004 6 5.990 5982 5.996 5.988 6.000 5.992 6.012 6.004 8 7.987 7.978 7.995 7.986 8.000 7.991 8.015 8.006 10 9.987 9.978 9.995 9.986 10.000 9.991 10.015 10.006 12 11.984 11.973 11.994 11.983 12.000 11.989 12.018 12.007 15 14.984 14.973 14.994 14.983 15.000 14.989 15.018 15.007 17 16.984 16.973 16.994 16.983 17.000 16.989 17.018 17.007 20 19.980 19.967 19.993 19.980 20.000 19.987 20.021 20.008 25 24.980 24.967 24.993 24.980 25.000 24.987 25.021 25.008 30 29.980 29.967 29.993 29.980 30.000 29.987 30.021 30.008 35 34.975 34.959 34.991 34.975 35.000 34.984 35.025 35.009 40 39.975 39.959 39.991 39.975 40.000 39.984 40.025 40.009 45 44.975 44.959 44.991 44.975 45.000 44.984 45.025 45.009 50 49.975 49.959 49.991 49.975 50.000 49.984 50.025 50.009 60 59.970 59.951 59.990 59.971 60.000 59.981 60.030 60.011 120 119.964 119.942 119.988 119.966 120.000 119.978 120.035 120.013 70 69.970 69.951 69.990 69.971 70.000 69.981 70.030 70.011 140 139.957 139.932 139.986 139.961 140.000 139.975 140.040 140.015 80 79.970 79.951 79.990 79.971 80.000 79.981 80.030 80.011 160 159.957 159.930 159.986 159.961 160.000 159.975 160.040 160.015 90 89.964 89.942 89.988 89.966 90.000 89.978 90.035 90.013 100 99.964 99.942 99.988 99.966 100.000 99.978 100.035 100.013 110 109.964 109.942 109.988 109.966 110.000 109.978 110.035 110.013 Suggested Shaft Size

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