Sintered Bearings

Powdered metal gears from Keystone combine state-of-the-art design, fully integrated production, and extensive testing to set the standard for precision, strength, and quality.

High-Performance Sintered Bearings for Demanding Applications.

Metal machine parts arranged on a dark background, including a large cylinder, circular ring, and smaller cylindrical components.

Self-lubricating sintered bearings deliver high performance under load and offer exceptional wear properties. The porosity of bearings produced through the conventional powdered metal process makes oil impregnation possible, eliminating the need for a supplemental lubrication system. This lifelong lubrication makes sintered bearings a versatile alternative to costly roller bearings.

Keystone manufactures sintered bearings in bronze, diluted bronze, and a proprietary high-graphite iron. We supply flange, spherical and sleeve bearings—with High PV material options that last up to 2.5 times longer than the industry standard for high-speed, high-load applications.

Applications Specifications

  • Home appliances

  • Automotive transmissions

  • Outdoor power equipment

  • Fractional horsepower motors

  • Up to 3" in diameter

  • Up to 4.5" in length

  • Less than 1 lb.

  • Up to 125,000 PV

We perform all secondary operations for our bearings in-house, oil impregnation, and assembly.

View Our Other Powder Metal Parts

Set of metallic machine parts, including a vertical cylinder, a large ring, and several smaller cylindrical components, displayed on a dark background.