Tolerance valuesĪctual tolerance values are listed in the following tables. Where the tolerance class is standard for the bearing, it is not specified in the designation suffixes.įor information about SKF bearings that have a tolerance class better than class 5, refer to Super-precision bearings. The tolerance class of a bearing cannot always be determined from its designation suffixes. The product sections for the various bearing types provide information on compliance with applicable tolerance classes. Minimum standard for all SKF ball and roller bearings. There are three common tolerance classes for SKF ball and roller bearings: ISO tolerance class You can find more information on ISO 492 and ISO 199, and the changes that have been made to their previous editions, on the SKF e-learning platform. In 2014 these standards were aligned with general ISO GPS (Geometrical Product Specification) standards such as ISO 1101 and ISO 5459. Tolerance classes and the corresponding values for certain tolerance characteristics are specified in ISO 492 (for radial bearings) and ISO 199 (for thrust bearings). Enter your desired preferred tolerance grade and the nomial size. The following Engineering calculator will show the plus and minus tolerance for the specific ISO 286 hole tolerance data.
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