Special-shaped needle bearing

Abstract

The invention discloses a special-shaped needle bearing. The special-shaped needle bearing comprises a bearing outer shell, a bearing inner race and a cage, wherein the cage is concentrically arranged between the bearing outer shell and the bearing inner race; the cage comprises a first steel ring, a second steel ring and rolling needles; supporting strips are annularly arranged between the first steel ring and the second steel ring at intervals to connect the first steel ring and the second steel ring; arc-shaped plates for clamping the rolling needles are respectively arranged at two sides of the support strips; two ends of the rolling needles are respectively embedded in the first steel ring and the second steel ring; and outer diameters of the rolling needles are gradually reduced from middles to two ends. The special-shaped needle bearing disclosed by the invention has the advantages that the rolling needles with the diameters gradually reduced from middles to two ends are specially adopted to increase the radial bearing force of single rolling needle; the rolling needles are clamped by adopting semicircles in the supporting strips to ensure that the radial force bearing range can be effectively increased; and therefore, the radial force bearing ability of the needle bearing is greatly increased and the service life of the bearing is prolonged.

Description

Technical field [0001] The invention relates to the field of bearings, in particular to a special-shaped needle roller bearing. Background technique [0002] Bearings can be divided into rolling bearings and sliding bearings according to the different friction properties of moving elements. Among them, rolling bearings have been standardized and serialized, but compared with sliding bearings, their radial dimensions, vibration and noise are larger, and the price is higher. . [0003] Needle roller bearing is a commonly used bearing, ordinary needle roller bearing, due to the small diameter and relatively long length of the needle roller, the radial force of the bearing is weak, the force of the needle roller is large, and it is easy to wear. The life is shortened, which is not conducive to heavy load and low operation, and reduces the use range of needle roller bearings. Summary of the invention [0004] The purpose of the present invention is to provide a special-shaped needle ro...

AI Technical Summary

Problems solved by technology

[0002] Bearings can be divided into rolling bearings and sliding bearings according to the friction properties of moving elements. Among them, rolling bearings have been standardized and serialized, but compared with sliding bearings, their radial size, vibration and noise are larger, and their prices are also higher.

[0003] Needle roller bearings are a commonly used bearing. For ordinary needle roller bearings, due to the small diameter and relatively long length of the needle rollers, the radial force of the bearing is weak, the force of the needle rollers is large, and it is easy to wear or wear, which makes the bearing The life is shortened, which is not conducive to heavy load and low operation, and reduces the use range of needle roller bearings

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