Ball Bearing Components

Steel Crown

Offered in 410 stainless steel. This style cage “snaps in” over the balls. These perform well in low -torque, low-speed applications.

Steel Two-Piece Ribbon

Offered in 305 stainless steel.  The two-halves are crimped together (rivet-style not available). These cages can can operate at low to moderately high speeds.

Phenolic

Linen-based material with ability to absorb lubricants.  These cages withstand heavy inertial forces and operating temperatures up to 250°F (120 °C). Vacuum-impregnation also available.

Meldin^®

Chemically resistant and compatible with all lubricants.  Low thermal expansion, and stable at high temperatures.

Aluminum-Bronze

High strength, with operating temperatures of up to 500°F. Other useful properties include stiffness and ductility.

Delrin^®

 Features high strength and stiffness, with low moisture absorption.  Good wear and abrasion resistant properties, and has a wide range of chemical resistance.

Rulon

High compressive strength, with low coefficient of friction.  This material can be used in bearings and at temperatures from -400°F to 500°F.

PGM 

 Glass-fiber & Molybdenum Disulphide.  It’s a self-lubricating composite which is used primarily within the space industry.  Can be used up to 575°F.

Peek

Engineered thermoplastic.  Performs well in high-speed or high temperature applications, and is a chemical resistant material. Great option for high-precision angular-contact ball bearings.

Torlon

Superior resistance to high temperatures. It is capable of performing under severe stress conditions at continuous temperatures up to 500°F (260°C). extremely low coefficient of linear thermal expansion.

Slugs

Teflon^® PTFE bearing ball separators.  Used in low torque and low speed applications.

Toroids

Teflon^® PTFE.  Used in low-torque and low-speed applications, and only available in Angular-Contact bearings.

Shields

Offered in 300-series stainless steel, providing superior corrosion resistance.

Double-Virgin Teflon^® Seals

Polytetrafluoroethylene (PTFE), AMS3652 non-critical grade.

Double-Glass Reinforced Teflon^® Seals

Able to withstand aggressive environments.  They have good wear resistance, low creep, and good compressive strength. Excellent chemical compatibility.  AMS3666.

Rubber Seals

Buna-N rubber seals (acrylonitrile butadiene). These provide protection in contaminated environments.  Max operating temperature is 240° F. (These are only available for certain PKB bearings; please inquire about options).

Viton^® Seals

Synthetic rubber and fluoropolymer elastomer.  Resistant to high temperatures, petroleum products, solvents, and a wide range of chemicals.

Steel

440c stainless steel balls are very strong, with fair corrosion resistance. They are resistant to water, petroleum products, organic materials, and steam.

TiC

Coating used in high-precision and instrument bearings.  It has a strong resistance to  lubricant breakdown. TiC coatings can also lower material transfer (microwelding), that causes metal-to-metal contact between the balls and raceways.

Ceramic

Silicon-Nitride (Si3N4) balls, for use in our Hybrid bearings(440c Stainless Steel rings).  These balls are twice-as-hard as steel balls, having excellent fracture-toughness.  They also have excellent corrosion resistance.