Abstract: A bearing assembly includes a roller bearing having a bore, and a pin positioned within the bore. The pin has a composite outer profile defined by a first substantially circular segment with a first axis of rotation, and a second substantially circular segment with a second axis of rotation of a different radius. The second axis of rotation is offset from the first axis of rotation.

Abstract: A bushing device includes a spindle, a sleeve slidably engaged on the spindle, and a lubricating collar disposed on the inner peripheral portion of the sleeve for slidably engaging onto the spindle and for lubricating the sliding movement between the sleeve and the spindle. The lubricating collar may be made of nylon powder, sulfurous tungsten, and calcium fluoride, and may be directly secured onto the inner peripheral portion of the sleeve with such as a molding or heating process, without additional adhering process or without additional adhesive materials.

Abstract: A scroll-type machine is disclosed which incorporates a lubricant impregnated drive bushing. The lubricant utilized for the impregnation process will preferably be of a type which is insoluble in the fluid being handled by the scroll-type machine, will remain trapped in the pores of the drive bushing under normal operating temperatures as well as any temperatures encountered during manufacturing processes to which the assembled compressor may be subjected yet will wick out of the bushing when its temperature increases such as may occur when insufficient lubricant is being supplied thereto by the normal lubrication system.