Poly-Round^® bearings are plain bearings that are made of high performance bearing-grade polymer materials or specialty metal alloys. The material incorporates lubricity into its composition, allowing the unit to operate as a bearing without any grease (Class III plane bearings). ‘No grease’ eliminates the necessity of seals or shields. Advantages of Poly-Round^® bearings include:

• ZERO grease
• Completely non-corrosive
• Sanitary: the only USDA-Accepted bearings available
• Nothing to contaminate process
• Unaffected by washdown or process moisture
• Eliminate seals and shields
• Reliable operation: predictable change-out
• Very low maintenance
• Ideal for HACCP/HARPC programs

Spherical plain bearings (SPBs), or bushings, are metal-on-metal bearings consisting of a spherically ground inner ring housed in a mating outer ring without any rolling elements. While all plain bearings are precision ground and made from through-hardened steel, custom orders are available and can include special materials, clearances, surface finishes or configurations to accommodate unique applications. Our SBT and SBDT designs feature lubricating holes and grooves in the outer ring for easy relubrication through the housing.

Available in inch and metric sizes from 12.7 mm to 600 mm (.5 in. to 23.622 in.) bore

This series of plain bearings is similar to the SF and FS types, but also includes lip seals that are retained in the outer ring and withstand high grease pressures during lubrication. These lip seals assure full distribution of the lubricant to all bearing surfaces and protect against internal contamination. While all of our plain bearings are precision ground and made from through-hardened steel, custom orders are available and can include special materials, clearances, surface finishes or configurations to accommodate unique applications.

Available in inch and metric sizes from 12.7mm to 600mm (.5 in. to 23.622 in.) bore

Timken’s spherical plain bearings (SPBs), or bushings, are metal-on-metal bearings consisting of a spherically ground inner ring housed in a mating outer ring without any rolling elements. While all plain bearings are precision ground and made from through-hardened steel, custom orders are available and can include special materials, clearances, surface finishes or configurations to accommodate unique applications.

Size range: Available from 12.7 mm – 600 mm (0.500 in. to 23.622 in.) bore