Maintenance-Free (Lubrication Free) Spherical Plain Bearings

Steel-on-Bronze Spherical Plain Bearing SeriesMaintenance-free (lubrication free) spherical plain bearings are used for applications where long bearing life is required without maintenance (i.e. lubrication) or where operating conditions such as inadequate lubrication (or the absence of lubrication) make the use of Steel-on-Steel bearings inadvisable. Due to their construction, they have very low friction and can be operated without maintenance. Maintenance-free spherical plain bearings are available in many material configurations including:

  • Steel-on-PTFE composite material
  • Steel-on-PTFE fabric
  • Steel-on-PTFE plastic
  • Steel-on-Copper alloys (including Bronze)

Dynamic load support capability of Steel-on-PTFE fabric Spherical Plain Bearings is higher than that of Steel-on- PTFE composite material with Steel-on-PTFE plastic generally having the lightest load capacity. However, the Steel-on-PTFE plastic products have excellent weatherability and are typically used out in the field (outdoor applications).

AST has nearly 500 different maintenance-free spherical plain bearings products and they are sub-classified in the following categories. Click on each to learn more:

If you need help in selecting the best products for your particular application, please remember that design engineering and application assistance are available from AST as part of our value-added services designed to make your job easier.

Click here to go to our online catalog and product specifier for our full line of Spherical Plain Bearings including free CAD downloads.

Full Line Spherical Plain Bearing Catalog & CAD Library

AST Bearings is proudly presenting our new certificates for both the NJ and CA locations: AST Bearings’ ISO 9001:2015 Certificates

To learn more about what the ISO 9001 standard is, the differences between the 2015 and 2008 versions, and how AST verifies customer satisfaction: Learn About AST Bearings’ certification to ISO 9001:2015

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