Retainer for rolling needle bearing

Abstract

The invention discloses a retainer for a rolling needle bearing, comprising a window hole (2) and window beams (1). The window hole (2) is used for placing rolling needles; guide bosses (3) are symmetrically arranged on adjacent window beams (1) in the window hole (2); the guide bosses (3) are arranged at two ends of the window beams (1); locking needle bosses (4) are arranged beside the guide bosses (3) along the radial direction of the retainer, and the locking needle bosses (4) protrude out of the guide bosses (3); the guide bosses (3) are arranged at the contact parts of the retainer and the guide rolling needles when in operation; and only two contact points are utilized on the axial direction of the window hole (2) to contact with the guide bosses (3), and the distance between two contact points is larger, therefore, the guidance of the retainer for the rolling needle cannot be influenced by uneven window holes (2).

Description

technical field [0001] The invention relates to a cage, in particular to a cage for a needle bearing. Background technique [0002] Needle roller bearings are a kind of bearings that can withstand large radial forces and are used in places with relatively compact structures. Generally, needle roller bearings use iron material cages. Their main disadvantage is that they are noisy when working. And the production process is also more complicated. [0003] With the application of engineering plastics more and more widely, the characteristics of materials (especially engineering plastics added with different proportions of glass fibers) have been developed by leaps and bounds, and have been widely used in bearing cages, but due to the processing of engineering plastics The process is a heating-cooling process. After heating and cooling, the material cannot meet the ideal technical requirements, especially in the part where the needle roller is guided, because the size is not ea...

AI Technical Summary

Problems solved by technology

[0002] Needle roller bearings are a kind of bearings that can withstand large radial forces and are used in places with relatively compact structures. Generally, needle roller bearings use iron material cages. Their main disadvantage is that they are noisy when working. And the production process is more complicated

[0003] With the application of engineering plastics more and more widely, the characteristics of materials (especially engineering plastics added with different proportions of glass fibers) have been developed by leaps and bounds, and have been widely used in bearing cages, but due to the processing of engineering plastics The process is a heating-cooling process. After heating and cooling, the material cannot meet the ideal technical requirements, especially in the part where the needle roller is guided, because the size is not easy to control, the guiding effect of the needle roller is not enough, resulting in insufficient performance of the bearing.

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