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VIDEO: Varieties of Bearing Materials

January 23, 2012 by Paul Wharton
John Wallace and Lee Teschler Interview

John Wallace, VP of Operations for AST Bearings talks about the various materials that bearings are made of.

Another interview by Machine Design Magazine’s editor Lee Teschler with AST Bearing’s VP of Operations, John Wallace.  This time, they talk about the wide variety of materials that bearings are made of and some of the applications of these materials. The link below will take you to Machine Design Magazine’s website for the actual video:

http://machinedesign.com/video/bearings-material-ast-bearings-0628

Video Interview Discusses Various Bearing Steels

Most bearings today are made of steel, specifically SAE 52100 Chrome Steel.  However, there have been many advancements in alternative steels that present specific advantages over traditional chrome steel. John Wallace explains what some of these steels are and how they are made including Martensitic steels such as 440C, ACD34, and the very latest “SV30” super stainless steel. The video goes into some depth to explain how the SV30 steel is nitrogen enhanced and how it creates Chromium Nitrides rather than Chromium Carbides leading to a bearing with superior low noise characteristics, along with increase life and vastly improved corrosion resistance.

More Information about Bearing Materials is Available in White Paper

If you want to learn more about bearing materials, AST Bearings has published a white paper entitled, “Bearing Materials – Ceramics, Chrome Steels, Stainless Steels, and Plastics.” This technical article discusses:

  • Bearings Made of Chrome Steel – SAE 52100
    • Extra clean 52100 chrome steel
  • Bearings Made of Stainless Steels
    • Martensitic Stainless Steel – AISI 440C
    • Martensitic Stainless Steel – ACD34
    • Martensitic Stainless Steel – SV30
    • Heat Treatment of Bearing Steels
    • AISI316 Austenitic Stainless Steel
    • Other 300 Series Stainless Steel
  • Bearings Made of Carbon Alloy Steel
    • Medium Carbon Alloy Steel
    • Low Carbon Alloy Steel
  • Bearings Made of Plastics and Non-Metallic Materials
    • Cages
    • Seals
  • Bearings Made of Ceramic Materials

Enjoy the video!  If you like to learn more about bearings, check out AST Bearings’ content rich “Resource Center” which contains:

Let us know what you think!  Leave a comment below.


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