Precise combination bearing with adjustable pretightening force

Abstract

According to the technical scheme, the pretightening force adjustable precise combination bearing comprises a bearing outer ring, a bearing inner ring is coaxially arranged on the inner side of the bearing outer ring, a plurality of balls are arranged between the bearing outer ring and the bearing inner ring and distributed in a circumferential array mode, retainers are arranged on the two sides between the bearing outer ring and the bearing inner ring, and the retainers are arranged on the two sides between the bearing outer ring and the bearing inner ring. The precise combination bearing with the adjustable pretightening force has the beneficial effects that the pretightening adjusting mechanism is arranged, the adjusting bolt is limited through the locking nut, so that the spacing distance between the two retainers can be adjusted, and the pretightening force is adjusted through elastic extrusion of the first spring, so that the pretightening force is adjusted, and the precision of the pretightening force is improved. According to the retainer for the ball bearing, by arranging the arc-shaped plates, every two opposite arc-shaped plates can clamp the balls to different degrees, so that pre-tightening force adjustment is achieved, and the problems that the pre-tightening force of an existing retainer for the ball bearing is fixed during installation, adjustment cannot be conducted according to the sizes of the balls or actual situation needs, and use is inconvenient during combination and assembly are effectively solved.

Description

technical field [0001] The invention relates to the technical field of bearings, in particular to a precision combined bearing with adjustable pretightening force. Background technique [0002] The general description of the pretightening force is: in the connection (connection methods and uses are diverse), before being subjected to the working load, in order to enhance the reliability and tightness of the connection, in order to prevent the connection between the connected parts after being loaded. Gap or pre-applied force relative to slippage. Bearing is an important part of contemporary mechanical equipment. Its main function is to support the mechanical rotating body, reduce the friction coefficient during its movement, and ensure its rotation accuracy. [0003] When the existing ball bearings are installed, most of the internal balls are limited by the cage. The pre-tightening force of this method is fixed and cannot be adjusted according to the size of the balls or t...

AI Technical Summary

Problems solved by technology

[0003] When the existing ball bearings are installed, most of the internal balls are limited by the cage. The pre-tightening force of this method is fixed and cannot be adjusted according to the size of the balls or the actual situation. It is not convenient to use when assembling.

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