Abstract: A limited slip differential is adapted for use in self-propelled wheeled vehicles requiring maximum available tractive effort. The differential utilizes a gearless design for differentiation and compact gearing therewith for reliability and increased limited slippage characteristics. The preferred differential embodiment comprises a housing having a slide block mounted therein for relative reciprocation in a first plane perpendicular to a longitudinal axis of the differential. A pair of first gear members, each having teeth formed internally thereon, are disposed on either side of the slide block and are keyed thereto for relative reciprocation in a second plane and longitudinal axis. A pair of second gear members, each adapted for securance to a drive axle and having teeth formed externally thereon, are rotatably mounted in the housing.

Abstract: A heavy duty tapered roller bearing assembly is designed for use in such devices as the turntables which mount excavator superstructures on their tracked undercarriages. A raceway has two races having four faces that define an annular cavity, the cross section of which is a quadrilateral with converging opposite faces. Annular tapered bearing rollers have walls of a thickness to be compliant under the loads to which they are subjected in use, and the axes of rotation of alternate rollers are at 90.degree. to one another with each roller having its tapered surface confined between two of the converging opposite faces of the cavity and having an end surface abutting a third face. The rollers have central circumferential arcuate grooves which slidably interfit with one another so that each roller is guided by the rollers which flank it; and the roller walls define lubricant chambers from which lubricant moves outwardly as the rollers rotate to lubricate the outer roller surfaces.