Retainers:

Steel Crown

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

Ribbons

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 (1)

Meldin®

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

 AlumBronze

Aluminum-Bronze

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

Delrin

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 (1)

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 (1)

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

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 (1)

Slugs

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

Toroids (1)

Toroids

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

Closures:

Shields (1)

Shields

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

DoubleVirginTeflon(TT) (1)

Double-Virgin Teflon® Seals

Polytetrafluoroethylene (PTFE), AMS3652 non-critical grade.

DoubleGlass2

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.

RubberSeal

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).

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Viton® Seals

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

 

Balls:

SteelBalls

Steel

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

TicBalls

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.

CeramicBall

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.

 

Delrin®  is a registered trademark of DuPont.

Meldin® is a registered trademark of Saint-Gobain Performance Plastics Corporation.

Teflon® is a registered trademark of DuPont.

Viton® is a registered trademark of The Chemours Company.

 

Please Note: Other machined retainer material available. Contact us with your specifications and/or requirements.