Novel bolt type cam follower needle roller bearing

Abstract

The invention discloses a novel bolt type cam follower needle roller bearing. The novel bolt type cam follower needle roller bearing is mainly characterized in that the left end of a center hole of a rolling wheel is provided with a convex ring used for supporting balls uniformly distributed on a retainer of a thrust ball bearing; a first annular circular-arc groove is formed in the bottom surface of an annular hole body of a left concave hole of the left end of the rolling wheel; the concave circular-arc surface of the first annular circular-arc groove and the right end surfaces of the balls uniformly distributed on the retainer are precisely assembled together; the annular end surface of the right end of a shaft shoulder of a rolling wheel shaft is provided with a second annular circular-arc groove opposite to the first annular circular-arc groove; and the concave circular-arc surface of the second annular circular-arc groove and the left end surfaces of the balls uniformly distributed on the retainer are precisely assembled together. According to the novel bolt type cam follower needle roller bearing, the structure principle of the thrust ball bearing and the structure principle of the needle roller bearing are combined; the thrust ball bearing and the needle roller bearing are integrally combined; the structure is compact; not only can large radial force be borne, but also large axial force can be borne; materials are saved; the equipment size is decreased; the cost is reduced; and using is safe.

Description

technical field [0001] The invention relates to the technical field of bearings, in particular to a novel bolt type roller needle roller bearing. Background technique [0002] The existing bolt-type roller needle roller bearings have the following disadvantages: 1. Cannot carry axial force; 2. When the screw bears axial force, the annular end surface of the right end of the shoulder of the roller shaft and the annular hole of the left concave hole at the left end of the roller The bottom surface is pressed together, and dry friction occurs when the screw rotates. The friction force is large, and the sensitivity of the screw rotation is low, which affects the use effect. The bottom surface is easy to wear, which affects the service life; 3. There is no anti-loosening device on the screw rod to prevent the loosening of the connecting nut, which has potential safety hazards. Contents of the invention [0003] The purpose of the present invention is to improve the deficiencie...

AI Technical Summary

Problems solved by technology

[0002] The existing bolt-type roller needle roller bearings have the following disadvantages: 1. Cannot carry axial force; 2. When the screw bears axial force, the annular end surface of the right end of the shoulder of the roller shaft and the annular hole of the left concave hole at the left end of the roller The bottom surfaces are pressed together, and dry friction occurs when the screw rotates. The friction force is large, and the sensitivity of the screw rotation is low, which affects the use effect. The bottom surface is easy to wear, which affects the service life; 3. There is no anti-loosening device on the screw rod to prevent the loosening of the connecting nut, which poses a safety hazard

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