Assembled angular contact ball bearing capable of bearing higher axial load

Abstract

The invention discloses an assembled angular contact ball bearing capable of bearing higher axial load, and relates to the field of bearing assembly under the working conditions of high speed and highaxial load. The assembled angular contact ball bearing comprises a bearing outer ring, a bearing inner ring, a rolling body and a cage; the bearing inner ring and the bearing outer ring select over shoulder limit size coefficients Kd1 and Kd2 of 0.95; corresponding assembly locking quantities are given by using a differential value between an inner ring groove bottom diameter dI and an outer ringgroove bottom diameter DI, a rolling body diameter DW and a formula (DI-dI) / 2-DW; and the rolling body adopts a steel ball for a main shaft bearing. The assembled angular contact ball bearing has thefollowing beneficial effects: the reasonable over shoulder limit sizes are selected, so that flanges cannot be damaged by higher axial force during working of the bearing. The position and the angle,influencing installation, of the rolling body are determined by adopting the locking quantity angle method; and the assembly locking quantities are reasonably given to realize nondestructive assemblyof products.

Description

technical field [0001] The invention relates to the technical field of bearing assembly under high-speed and axial heavy-load working conditions, in particular to an assembled contact ball bearing capable of bearing extremely large axial loads. Background technique [0002] With the emergence of new synthetic materials and the expansion of the use of high-precision injection molded parts, the development of electric injection molding machines not only conforms to the inevitable trend of social productivity development, but also contributes to the development of the national plastic machine industry and actively participates in international competition. Technical level is of great significance. However, if ordinary bearings are used as main shaft bearings, there are problems of severe wear and low life when installed on injection molding machines. The main reason is that the axial bearing capacity of main shaft bearings currently used in electric injection molding machines i...

AI Technical Summary

Problems solved by technology

This invention increases the overall rigidity of the bearing, which is beneficial to increase the service life of the bearing, but does not significantly increase the axial load of the bearing, and objectively cannot really solve the loss problem caused by excessive axial load

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