Bearing construction of a crankshaft of a cold Pilger rolling mill, or the like

DETAILED DESCRIPTION We claim: 1.
A bearing construction for use in supporting a member subject to relatively high speed and/or heavy load such as certain members of a rolling mill and for mounting said mill member onto a shaft for rotation therebetween, and wherein said bearing construction is exposed to an external cooling fluid employed for the rolling mill, said construction comprising: a first bearing member, and a second bearing member made of a material that is subject to decreased performance and/or failure when subjected to excessive heat due to said high speed and/or heavy load, and having a relatively low thermal conductivity with respect to said first bearing member, said first bearing member made of a high strength material having a high thermal conductivity relative to said second bearing member, said first and second bearing members arranged concentrically with respect to each other and located concentrically between said shaft and said mill member, said first and second bearing members having slideable load carrying surfaces contacting each other which are subject to the generation of frictional heat during operation of said mill member, said first bearing member including cooling means having substantially similar portions extending outwardly of said first member's load carrying surface on opposite ends thereof and having sufficient exposed areas that during said operation said areas are brought into contact with said external cooling fluid to dissipate said frictional heat from said first bearing member to thereby protect said second member from said excessive heat.
2.
A bearing construction according to claim 1, wherein the surface area of said first bearing member is greater than that of said second bearing member.
3.
A bearing construction according to claim 1, wherein said similar portions of said cooling means consists of cooling fins which extend both in an axially and radially outwardly direction from said shaft along both sides of said mill member and said second bearing member