The ZWZ on the bearing refers to the ZWZ bearing, which is a type of rolling bearing. The rolling bearing is a precision device that changes the sliding friction between the running shaft and the shaft seat into rolling friction, thereby reducing friction losses. mechanical components.

Rolling bearings generally consist of four parts: inner ring, outer ring, rolling elements and cage. The function of the inner ring is to cooperate with the shaft and rotate together with the shaft; the function of the outer ring is to cooperate with the bearing seat and play a role. Supporting effect.

The rolling elements are evenly distributed between the inner ring and the outer ring with the help of the cage. Their shape, size and number directly affect the performance and life of the rolling bearing; the cage can make the rolling elements Evenly distributed to prevent the rolling elements from falling off and guide the rolling elements to rotate for lubrication.

Extended information:

Classification of bearings:

1. Sliding bearings

Sliding bearings have no inner and outer rings and no rolling elements. Generally made of wear-resistant materials. It is often used in low speed, light load and mechanical rotating parts where lubricating oil and maintenance are difficult.

2. Spherical bearings

The sliding contact surface of spherical bearings is spherical and is mainly suitable for swing, tilt and rotation movements.

3. Rolling bearings

Rolling bearings are divided into radial bearings and thrust bearings according to the load direction they can bear or the nominal contact angle. The radial contact bearing is a radial bearing with a nominal contact angle of 0, and the radial angular contact bearing is a radial bearing with a nominal contact angle greater than 0 to 45.

Baidu Encyclopedia-ZWZ Bearing