Ceramic bearing

Details Ceramic bearing Ceramic bearing

F - Mech Eng,Light,Heat,Weapons

16

C

308/18, 308/20

F16C 17/10 (2006.01) F16C 33/04 (2006.01)

Patent

CA 2026589

Abstract of the Disclosure This invention is to provide a ceramic sliding bearing which is possible to support the axis to which the radial load and the thrust load are applied simultaneously or selectively, and also this invention is to provide a bearing having a small number of parts by constructing the inner and the outer rings by means of ceramics. The ceramic product of this invention is characterized by combination of the ceramic inner ring and the ceramic outer ring wherein said ceramic inner ring which forms an axial hole for engaging the axis at the center thereof, forms a cylinder surface parallel to the axial center of the axial hole on the outer periphery thereof and forms an approximately rectangular plane to the axial hole at the end portion thereof, and said ceramic outer ring having a cylindrical surface at the inner periphery which contacts slidably with the outer periphery of the ceramic inner ring and a plane which contacts slidably with a plane formed at the end portion of the ceramic inner ring connecting with said cylindrical surface. The axis is engaged with the axial hole formed at the inner ring, the sliding does not happen between the axis and the inner ring. accordingly there is no fear of occurrence of the abrasion to the axis even after long period of use. Since the inner and outer rings are constructed by ceramics, the sliding friction is small thereby being able to increase the heat generation due to the friction. Further, since the expansion due to the heat is small, the generation of stress regarding a machine frame and axis, etc. is possible to decrease. -2-

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