Working principle of slewing bearing

1. Working principle of slewing bearing

Slewing bearing is a kind of super large bearing which can bear comprehensive load. It is also called "turntable bearing" because its shape is similar to plate. It can bear large axial load, radial load and overturning moment at the same time. It can replace several sets of common bearings. It is a kind of combined bearing with high efficiency and high bearing capacity.

Generally, the diameter of slewing bearing is 0.4 ~ 10 m, with mounting hole, internal or external gear, lubricating oil hole and sealing device. It has the characteristics of compact structure, accurate and stable transmission, flexible rotation, long service life, simple installation and convenient daily use and maintenance. For different use requirements, slewing bearing has a variety of structural types to adapt to it, It can be widely used in hoisting machinery, engineering machinery, metallurgical machinery, medical machinery, transportation machinery, food machinery, textile machinery, material processing machinery, military equipment, aerospace equipment, power generation equipment and other fields, so it is an indispensable part of mechanical rotary device.

2. Working mode of double positive slewing bearing

Slewing bearing is also called turntable bearing or slewing bearing. It is a super large bearing that can bear comprehensive load, or a combination bearing with high efficiency and high bearing capacity. It can bear large axial load, radial load and overturning moment at the same time. Its working mode and principle is similar to that of bearings, and its principle is very simple: the way of moving objects is to change from sliding to rolling, so as to reduce friction resistance.

The slewing bearing is composed of two rings, a group of rolling elements and cages, which has strong universality. According to the actual use and design structure, there are different working modes. There are two basic working modes: 1. The inner ring is fixed and its supporting function is fixed, and the outer ring is rotated. 2. The outer ring is fixed for its supporting function and the inner ring rotates.