Ball bearing with large and small ball structure

Abstract

The invention provides a ball bearing with a large and small ball structure. The ball bearing comprises an outer ring and an inner ring, a raceway is formed between the outer ring and the inner ring, the ball bearing comprises a plurality of first balls and a retainer, the retainer is provided with a plurality of second balls and guide parts, and the diameter of the second balls is smaller than that of the first balls; and the second balls and the first balls are arranged on the raceway at intervals, the guide parts are used for forming clearance fit between the second balls and the inner wall of the raceway, and when the first balls are in interference fit with the inner wall of the raceway, the second balls can abut against the wall of the raceway. Aiming at the defects in the prior art, the ball bearing with the large and small ball structures is provided, and is high in adaptive capacity and high in limit load.

Description

technical field [0001] The invention relates to a ball bearing with a large and small ball structure. Background technique [0002] Ball bearings refer to bearings that use balls as rolling elements. Due to the shape of rolling elements, ball bearings can usually bear combined radial and axial loads, and are widely used due to their simple structure. Ball bearings in the prior art are usually It includes an outer ring, an inner ring, a cage and a number of balls. A raceway is formed between the outer ring and the inner ring. The raceway is used for rolling a number of balls. The cage is used for The balls form intervals and guides. This kind of ball bearing has the problem of small limit load due to the space occupied by the cage on the raceway. On the basis of this kind of ball bearing, in order to make it have a greater load capacity, it is also set There is a kind of full ball bearing, by removing the cage and filling the balls in the annular raceway, the balls that abut...

AI Technical Summary

Problems solved by technology

[0002] Ball bearings refer to bearings that use balls as rolling elements. Due to the shape of rolling elements, ball bearings can usually bear combined radial and axial loads, and are widely used due to their simple structure. Ball bearings in the prior art are usually It includes an outer ring, an inner ring, a cage and a number of balls. A raceway is formed between the outer ring and the inner ring. The raceway is used for rolling a number of balls. The cage is used for The balls form intervals and guides. This kind of ball bearing has the problem of small limit load due to the space occupied by the cage on the raceway. On the basis of this kind of ball bearing, in order to make it have a greater load capacity, it is also set There is a kind of full ball bearing, by removing the cage and filling the balls in the annular raceway, the balls that abut against each other form a guide, so that the full ball bearing has more rolling elements and stronger load capacity, but this When this kind of bearing is in operation, the adjacent balls will rotate in the same direction driven by the inner ring, so that the balls will rub against each other. Under the high-speed operating environment, the balls will have greater wear and stability. poor

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