Product Description
- Sintered metal, self-lubricating bearings are made from powdered metal alloys pressed and baked with heat to form various dimensions.
- Upon exiting their moulds, the newly formed surfaces are formed with open pores. These pores channel lubricants between the bearing itself and the shaft.
- The pores are then vacuum impregnated with an oil to improve the material's load bearing ability.
- The bearing material holds approximately 20% oil by volume and acts as a "sponge like" resevoir.
- The most common lubricant impregnated at the factory is straight SAE 30 oil.
- Sintered metal is mostly made of copper with approximately 10% tin and up to 1% iron.
- Sintered metals reduced coefficient of friction makes it useful for many applications.
- Uniform oil coating of the mating shaft during operation ensures good lubricant distribution.
- Due to the porous structure of sintered materials, machining them poses issues. A sharp cutting tool such as tungsten carbide is stipulated as it does not "smear" the surface of the sintered metal and block the pores lubrication ability such as a reamer will do.
Symmco Sintered Metal Products
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Custom Field
Inner diameter 3.0000"
Outer diameter 3.500"
Length 2.500"
Oilite® number AA3502-7
Harmonization code 7407.29
Country of origin USA
