Engineering Data

Engineering Data provides a guide to expected tolerances, material compatibility and mounting practices. Special attention must be taken with the mounting of plastic race bearings due to normal expansion and contraction caused by temperature or interference fits. Sales engineers are available to answer specific questions and to bring your Idea to Reality™.

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Plastic Vs Steel

Lubrication Free: Steel bearings require lubrication to reduce friction, dissipate heat and prevent corrosion. Due to the design of plastic ball bearings, there is no metal to metal contact, which results in less friction. Many times the liquids the bearings are running in can dissipate heat and act as the lubricant.


Read all the benefits of Plastic vs Steel Bearings