摘要:
A retainer particularly suitable for use in a crossed-roller rolling contact bearing assembly is provided. The retainer is comprised of a thin plate which is provided with at least one hole for locating therein a roller. A pair of top and bottom projections are formed in the hole for providing main contact surfaces for holding the roller in position by surface contact. Additionally, the wall which defines the hole is provided with a double-tapered section at least partly, and this double-tapered wall section provides auxiliary contact surfaces for holding the roller in position by surface contact.
摘要:
A roller bearing assembly employing a plurality of elliptical roller bearings in surface contact and arranged to provide improved alignment in a race assembly. In an exemplary assembly, an inner race on a shaft has a convex surface and a first elliptical roller bearing has a concavity intermediate its ends having a radius equal to the radius of the curvature of the race for rolling contact therewith. The concavity of the first elliptical bearing has rolling contact with the convex or profile surface of a second elliptical roller bearing operating on an axis parallel with the axis of the first roller bearing but spaced outwardly therefrom. The assembly also includes a third elliptical roller bearing which operates on an axis parallel with the others and which has a peripheral concavity intermediate its ends. This latter concavity has a radius equal to the profile radius of the second roller bearing and is engaged by such convex surface. The convex or profile surface of the third roller bearing is in rolling contact with the concave surface of an outer race.
摘要:
A three-section synchronous concealed slide rail includes a mobile rail, a middle rail, a fixed rail and a damping mechanism. An upper rack and an upper roller cage with an roller are installed between the mobile rail and the middle rail, a split-type lower roller cage with a roller is installed between the middle rail and the fixed rail, a surface of which is provided with a rack. A gear assembly is meshed between the upper rack and the lower roller cage and used for controlling synchronous or staggered operation of the mobile rail and middle rail according to the intensity of acting force, and the damping mechanism is installed on the fixed rail.
摘要:
A rolling-element bearing includes inner and outer rings and a cage between the rings, the cage having a plurality of cage segments with lateral boundary walls defining a receiving pocket for a rolling element having a diameter Dw, the pockets being dimensioned such that in a load-free state the rolling elements are positionable in the receiving pockets with a circumferential clearance (c) on the pitch circle between adjacent boundary walls of the pocket such that the clearance satisfies the relationship: cmax≧c≧Cmin, where: cmin=0.01*Dw−0.5 mm and cmax=0.02*Dw−0.4 mm, and wherein the diameter (Dw) of the rolling-element bearing is at least 50 mm.