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Product data

Metric seriesInch series
Dimension standardsISO 2982-1:1995, except for the bore diameter of sleeves for inch shaftsANSI/ABMA Std. 8.2:1991
TolerancesBore diameter: JS9
Width: h15
External taper
1:12 as standard
1:30 as standard in the 40 and 41 dimension series
For additional information, contact the SKF application engineering service.
Bore diameter < 200 mm
(size ≤ 40): metric thread in accordance with ISO 965-3:1998, matching the appertaining SKF lock nut
Bore diameter ≥ 200 mm
(size ≥ 44): metric trapezoidal thread in accordance with ISO 2903:1993, matching the appertaining SKF lock nut
Bore diameter ≤ 12 in.
(size ≤ 64): Unified Special Form ANSI/ASME B1
Bore diameter ≥ 12 7/16 in.
(size ≥ 68): ACME thread class 3G
Shaft tolerances
Cylindricity: IT5/2 – ISO 1101:2012
Adapter sleeves adapt to the shaft diameter, so that wider diameter tolerances can be permitted compared to the seat of a bearing with a cylindrical bore. However, the form tolerances must be kept within narrow limits as the accuracy of form directly affects the running accuracy of the bearing.
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