Bearings for Running in Submerged Applications

Carbon/graphite bearings are used for running submerged in low viscosity liquids like water, gasoline, hot oil, solvents, strong chemicals, molten metals, and liquefied gases. Metallic bearings are often not satisfactory for these applications because the hydrodynamic film provided by these low viscosity liquids is not thick enough to overcome the strong atomic attraction between metal bearings and the metal shaft. However, since there is no strong atomic attraction between carbon/graphite and a metal shaft, the thin hydrodynamic film provided by low viscosity liquids provides sufficient lubrication for carbon/graphite bearings.

Plastic or polymer bearing materials often fail in these submerged applications because of their tendencies to swell, soften or deteriorate.

Metcar materials can handle all common chemicals except for a few extremely strong oxidizing agents such as hot, concentrated nitric acid.

Metcar is available to assist with:

  • • Optimal Metcar grade selection
  • • Correct bearing size & tolerances
  • • Proper press fit interference and running clearance
  • • Best chemical compatibility
  • • Optimal shaft materials and surface finish

Metcar bearings for running submerged 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.

  • • Automotive fuel pumps
  • • Automotive water pumps
  • • Canned motor pumps
  • • Centrifugal pump bearings and case-wear rings
  • • Chemical pumps
  • • Fuel pumps
  • • Gear pumps
  • • Heat transfer oil pumps
  • • Hot water circulating pumps
  • • Liquid nitrogen pumps
  • • Liquid oxygen pumps
  • • Meters
  • • Mixers
  • • Molten solder pumps
  • • Nuclear condensate recovery pumps
  • • Rotary vane pumps
  • • Soft drink pumps
  • • Submerged conveyors
  • • Submersible pump radial and thrust bearings
  • • Textile bleaching machines
  • • Textile washing machines
  • • Acids
  • • Alkalis
  • • Anhydrous ammonia
  • • Beverages
  • • Bleaches
  • • Boiler feed water
  • • Dry cleaning fluids
  • • Dyes
  • • Freon
  • • Fuel oil
  • • Gasoline
  • • Heat transfer oils
  • • Hydraulic oil
  • • Hydrocarbons
  • • Jet fuel
  • • Kerosene
  • • Lacquers
  • • Liquid air
  • • Liquid argon
  • • Liquid ethane
  • • Liquid chlorine
  • • Liquid oxygen
  • • Liquid nitrogen
  • • Liquid hydrogen
  • • LPG
  • • Molten metals
  • • Molten sulfur
  • • Plating solutions
  • • Potable water
  • • Propane
  • • Sea water
  • • Skydrol
  • • Solvents
  • • Tanning liquors
  • • Xylene

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:-400 to 2000ºF

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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