Support member

Abstract

A support member with excellent contact with the member to which the support member is attached, that is, a metal support member which supports a shaft directly or through a bearing and which has a plurality of the projections at its outer circumferential surface, wherein the plurality of the projections are formed at the outer circumferential surface as a whole at the time of casting of the support member and wherein at least part of the projections have thin-waisted shapes or a plastic support member which supports a shaft directly or through a bearing and which has a plurality of the projections at its outer circumferential surface, wherein the plurality of the projections are formed at the outer circumferential surface as a whole at the time of molding of the support member and wherein at least part of the projections have thin-waisted shapes.

1 . A metal support member which supports a rotary member directly or through a bearing and which has a plurality of the projections at its outer circumferential surface, wherein said plurality of the projections are formed at the outer circumferential surface as a whole at the time of casting of the support member and wherein at least part of the projections have thin-waisted shapes and the height of the projections is 0.3 to 2.0 mm, while the number of the projections is 5 to 100/cm 2 . 
     
     
         2 . A metal support member as set forth in  claim 1 , wherein said support member is made of cast iron, cast steel, copper, copper alloy, aluminum alloy, or magnesium alloy. 
     
     
         3 . A metal support member as set forth in  claim 1 , which is produced by centrifugal casting. 
     
     
         4 . A metal support member as set forth in  claim 1 , wherein said metal support member is attached by being cast in a member made of aluminum alloy, or magnesium alloy. 
     
     
         5 . A metal support member as set forth in  claim 1 , which is attached by integral molding in a member made of plastic or rubber.