Moldable/Machinable Liners

Machinable/Moldable LinersKaman Specialty Bearings' KAron moldable/machinable liners are a combination of thermosetting resin and filler materials in particle or fiber form. Our liners differ significantly from other self-lubricating materials in that there are no continuous interconnecting fibers or weave that can provide a moisture path to the bonding substrate. A moisture path can promote corrosion under the liner or significant liner swelling when used in a moisture-laden environment.

Liner materials used in our bearings include:

  • KAron - Temperatures to 450°F (232°C)
  • KAtherm – Temperatures to 500°F (260°C)
  • KAcarb – Temperatures to 1200°F (635°C)

Characteristics considered in the formulation of our self-lubricating liners include load carrying capability, operating temperature, coefficient of friction, sliding/rubbing velocities or any combination.

In addition to typical bearing applications, a KAron liner has other valuable uses including:

  • Salvaging Components – KAron can be applied in various thicknesses providing a method of salvaging components with oversize bores, undersize OD’s, worn or damaged surfaces, etc.Such applications can be rapidly addressed by a Kamatics representative as to the suitability of Karon as a solution.
  • Fretting Protection – KAron can be used as an inexpensive barrier to eliminate/prevent damaging contact between expensive components. In many cases, KAron can be used as “applied” without any subsequent machining
  • Corrosion Protection – KAron has demonstrated limited protection against corrosion while providing a bearing material that can be machined to very close tolerances

Kaman self-lubricating bearings can be found in thousands of applications, most commonly in:

Commercial/Military Fixed Wing Aircraft

  • Landing Gear
  • Flight Control Systems
  • Doors
  • Engines
  • Slats
  • Vertical & Horizontal Stabilizer Bearings

Commerical/Military Rotorcraft

  • Flight Control Systems
  • Rotor Control Systems
  • Damper Bearings
  • Landing Gear Swash Plate Bearings
  • Pitch Control Bearings

Space Vehicles & Satellites

  • Flight Control Systems
  • Power Systems
  • Doors
  • Hatches
  • Solar Array Deployment Systems


  • Navigational Lock Systems
  • Power Generation Systems
  • Steering & Diving Mechanisms
  • Water Tight Hatches & Doors


  • Gate Systems
  • Kaplan Hub Trunnion
  • Wicket Gate Bushing

Oil & Gas

  • Down-Hole Drilling
  • Oil Sands Shovels
  • Ball Valves
  • Risers
  • Moorings
  • Cranes Controllable Pitch Blades
  • Deck Equipment


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