Bearing Speed Ratings

This tool is used to look-up the maximum rotational speed at which a bearing can operate efficiently and safely without compromising performance or reliability. Operating below this rating ensures that the bearing will not experience excessive heat generation, wear or premature damage.
Note that these ratings are the same as those published in our catalogs and other online tools, just provided here in a convenient quick look-up tool.

Learn more about speed ratings by referencing our Help Guide.
Don’t know your part number? Try our Bearing Search tool.

Speed Capability Guideline
  • Industry experience indicates no problems under normal operating conditions
  • Industry experience indicates testing may be required to optimize a system
  • Testing will be needed and special bearings may be required to achieve these speeds
  • Speed rating exceeded for specified lubrication system and operating speed. Consult your Timken Sales Office.

Disclaimer: The accuracy of the technical information supplied through this engineering tool is dependent upon the accuracy and completeness of information supplied to Timken. Actual product performance is affected by many factors beyond the control of Timken, and which cannot be modeled through this engineering tool. Therefore, you must validate the suitability and feasibility of all designs and product selection. The technical information is presented solely to provide you, a customer of Timken or its affiliates, with data to assist you in your design. No warranty, expressed or implied, including any warranty of fitness for a particular purpose, is made by Timken through the provision of this information.

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