• Ball Bearing tolerances
  • Since our machine tools have very strictly requirements for the SKF bearings precision, bearing dimension accuracy and bearing running accuracy, so when we choose the SKF bearings, one point we must consider is the bearing tolerance, then what is the bearing tolerance?

    Bearing tolerance
    i.e., dimensional accuracy, running accuracy, etc are regulated by standards such as ISO and JIS. For dimensional accuracy these standards prescribed tolerances and allowable error limitations for those boundry dimensions (bore diameter, outside diameter, width, assembled bearing width, chamfer, and taper) necessary when installing bearings on shafts or in housings. For machining accuracy the standards provide allowable variation limits on bore, mean bore, outside diameter, mean outside diameter and raceway width or wall thickness (for thrust bearings). Running accuracy is defined as the allowable limits for bearing runout. Bearing runout tolerances are included in the standards for inner and outer ring radial and axial runout; inner ring side runout with bore; and outer ring outside surface runout with side.

    Tolerances and allowable error limitations are established for each tolerance grade or class. For example, JIS standard B1514 (tolerances for rolling bearings) establishes five tolerance classifications (classes 0, 6, 5, 4, 2).

    Starting with class 0 (normal precision class bearings),the bearing precision becomes progressively greater as the class number becomes smaller.

    In all, if you want to choose a SKF bearing and  check the exact ball bearing tolerance for your choice, such as deep groove ball bearings, angular contact ball bearings, self-aligning ball bearings, thrust ball bearings, cylindrical roller bearings, tapered roller bearingsetc, please contact us directly, our engineer will  indicate you the ball bearing tolerance chart and give you the perfect solution.

                                                                                                               Passage from  Yakang bearing Supplies

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