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Rulon® LR

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Rulon® LR is a maroon colored bearing material best known for its versatile design properties.

It is compatible with most hardened steel substrates. Mild steel is acceptable; harder running surfaces are better.

Rulon® has a practically universal chemical inertness. Of the chemicals encountered in commercial practice, only molten sodium and fluorine, at elevated temperatures and pressures, show any signs of attack.

For continuous non-lubricated service, Rulon® LR sleeve bearings are capable of operating up to 10,000 PV. Higher values are possible for intermittent service.

Design Criteria Rulon® LR
Temperature – Typical Range °F (°C) -400/+550 (-240/+288)*
Maximum PV (continuous) (MPa•m/s) 10,000 (0.35)*
Maximum P – psi (static) (MPa) 1000 (6.9)*
Maximum V – SFM (no load) (m/s) 400 (2)*
Shaft Hardness – Minimum Rc35
Shaft Finish Recommended Ra (µ"/µm) 8-24 (0.2-0.6)*
Shaft Material Steel

Engineering Information
Friction – Static & Dynamic 0.15-0.25
Water Absorption ASTM D570 0%
Flammability ASTM D635 Non-flammable
Chemical Resistance Inert
Thermal Conductivity BTU/hr/sq. ft./°F/in. 2.3
Linear Coefficient of Thermal Expansion  
78°-200°F Diameter 3.5x10-5 (6.3)*
(26°-93°C) Length 6.2x10-5 (11.2)*
78°-300°F Diameter 3.6x10-5 (6.5)*
(26°-149°C) Length 7.0x10-5 (12.6)*

Physical Data  
Elongation ASTM D638 135%
Tensile Strength ASTM D638 (MPa) 2000 psi (13.8)*
Deformation ASTM D621 3% (1500 psi – 24 hr. RT)
Specific Gravity ASTM D792 2.25

A more complete data sheet is available upon request.
*Metric data in parentheses

NOTE: The information contained herein are typical values intended for reference and comparison purposes only. They should NOT be used as a basis for design specifications or quality control. Contact us for manufacturers' complete material property datasheets. All values at 73°F (23°C) unless otherwise noted.
Rulon® LR

Typical Product and Application Description
Products Applications  
  • Automatically molded bearing and components
  • Sleeve, flanged and thrust bearings
  • Piston rings
  • Stamped and formed seals
  • Extruded Shapes
  • Machined parts
  • Molded shapes
  • Pumps
  • Mixers
  • Compressors
  • Appliances
  • Automotive
  • Insulators
  • Linear slides
  • Pipe support
  • Wear bands

Rulon® AR Rulon® J Rulon® 641

Rulon® is a registered trademark of Saint Gobain


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