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Materials - Technical
Miniature Bearings and Small Parts

Materials

Standard materials used for the races of our miniature ball bearings are AISI440C Stainless Steel and SAE52100 Chrome Alloy Bearing Steel

AISI440C Stainless Steel bearings are heat treated to a hardness usually from Rockwell C 58 to Rockwell C 61+. All RMB German Product is manufactured to a minimum of Rockwell C 61. The maximum recommended operating temperature is 177o Celsius (350o farenheit).

SAE52100 chrome steel Bearings are usually slightly harder than AISI440C bearings. RMB heat treats their SAE52100 chrome steel bearings to Rockwell C 61-64. The maximum recommended operating temperature of chrome steel bearings is 120o Celsius (248o farenheit).

Operating temperatures higher than those shown above will need special treatment. Please consult SPB.

See our sections on seals and shields and cages for information about the materials used in these parts.

Bearings for very corrosive environments are made from 316 stainless steel or acetal, but it must be noted that tolerances for these bearings are not as precise as for AISI440C or SAE52100. The available range of these types is limited.

The materials listed below cover some of the standard materials used in the Miniature Bearings and Small Parts product range. Not all materials are available for bearings. When you click into each material you will see a list of standard MBUSA Products to which that particular material relates.


Carbon Steels
Ceramics
Metals
Miscellaneous Materials
Plastics
Rubber
Stainless Steel

Acetal TM is a registered trademark of DuPont. Kevlar TM is a registered trademark of DuPont. Teflon TM is a registered trademark of DuPont. Torlon TM is a registered trademark of BP Amoco.


You can find many types of materials in the Miniature Bearings and Small Parts Online Catalogue pages.




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Miniature Bearings and Small Parts offers hundreds of thousands of products in thousands of categories including ball bearings, roller bearings, thrust bearings, ceramic and ceramic hybrid bearings, stainless steel bearings, miniature bearings, linear bearings, shafting, oil seals and adhesives - see the full listing in the Online Catalogue. We have excellent Freight Rates within USA and worldwide. We offer a choice of delivery with a signature required, or cheaper options with no signature required. The no signature required options are at the customer’s risk once the goods leave our store.

Using the links throughout this site you will find extensive information including catalogues, technical data, and other product specific information. We sell our products worldwide through our online store and our overseas freight rates are competitive for fully traceable courier delivery.

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