Bearings for Dry Running High & Low Temp Applications

Carbon/graphite bearings and thrust washers are used in high-temperature applications because oil/grease lubrication begins to volatilize or carbonize above approximately 350ºF (177ºC). When this occurs, metallic bearings start to experience high friction, high wear, galling, vibration and even seizing. Plastic and composite bearings are subject to softening, melting, and deformation, and may even extrude out of the bearing area altogether.

Carbon/graphite bearings are ideally suited for applications at both low and elevated temperatures because they rely on the self-lubricating properties of graphite. Thus, bearings manufactured from these carbon/graphite materials are not subject to the shortcomings associated with petroleum-based lubricants or the deformation of plastic and composite bearings at low and elevated temperatures.

Metcar is available to assist with:

  • • Optimal Metcar grade selection
  • • Correct bearing size & tolerances
  • • Proper press fit interference and running clearance
  • • Allowable wear rate at required load, speed, and temperature
  • • Temperature limitation
  • • Coefficient of friction
  • • Shaft material and surface finish

Metcar bearings for running dry can be provided to your print or approved dimensions and tolerances. Metcar bearings are also available shrink-fitted into metal housings or metal retaining rings.

  • • Annealing Furnaces
  • • Ash Precipitator
  • • Car Bottom Ovens
  • • Carpet Drying Ovens
  • • Continuous Brazing Oven
  • • Continuous Ceiling Tile Dryers
  • • Continuous Food Baking Ovens
  • • Continuous Gypsum Board Dryers
  • • Continuous Welding Guides
  • • Glass Lehrs
  • • Heat Treating Furnaces
  • • High Temperature Ball Valve Stem Bearings
  • • High Temperature Butterfly Valve Stem Bearings
  • • High Temperature Butterfly
  • • Flapper & Ball Valves
  • • High Temperature Conveyors
  • • High Temperature Dampers
  • • High Temperature Screw Conveyors & Stokers
  • • Oven Doors & Louvers
  • • Paint Drying Ovens
  • • Plywood Dryers
  • • Rubber Curing Ovens
  • • Steel Cooling Beds
  • • Turbine Safety Bearings
  • • Veneer Dryers
  • • Air-lubricated Bearings
  • • Electrically Conductive Bearings
  • • Bearings for Rotary Antennas
  • • Dash Pot Dampers
  • • Fly Ash Conveyors
  • • Food, Paper, & Textile Conveyors
  • • Ice Conveyors
  • • Oil-free Air Pumps
  • • Rotary Vacuum Pumps
  • • Turbine Safety Bearings

specifications

material:Over 150 grades of our proprietary carbon/graphite METCAR material are available. Our engineers will work with you to select the optimum grade.

temperature rating:Air/Oxidizing Environments
-400 to 1000ºF

temperature rating:Neutral/Reducing Environments
-400 to 5600ºF

pressure rating:Up to 1000 psi

size limit:Bearing diameters are available up to 24’ OD.

DOWNLOAD METCAR PHYSICAL PROPERTIES PDF
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