What are the structures and characteristics of slew bearings?

Slewing bearings, as a medium and large bearing with a special structure, have a unique structure and a series of significant characteristics.

一. In terms of structure, slewing bearings usually consist of the following parts:

1. Inner ring: As the core part of the bearing, it is directly connected to the rotating parts and bears the load from the rotating parts.

Outer ring: The fixed part, connected to the support structure, provides stable support for the inner ring.

2. Rolling elements: including steel balls or rollers, etc., located between the inner ring and the outer ring to achieve rolling motion, reduce friction, and transmit load.

3. Isolation block or cage: used to separate the rolling elements, maintain their correct arrangement, and prevent the rolling elements from contacting or colliding with each other.

Slewing bearings often have mounting holes, lubrication holes and sealing devices to meet the needs of installation, lubrication and sealing.

二. In terms of characteristics, slewing bearings have the following significant characteristics:

1. Strong load-bearing capacity: The slew bearing can bear large axial load, radial load and overturning moment and other comprehensive loads at the same time, and has a high load-bearing capacity.

2. Compact structure: The slew bearing has a compact structure design, is easy to install, and can be easily integrated into various mechanical devices.

3. Smooth rotation: Due to the use of rolling elements to achieve movement, the turntable bearings rotate smoothly, reducing friction and wear and improving mechanical efficiency.

4. Convenient maintenance: The sealing device and lubrication system of the turntable bearing make maintenance more convenient and extend the service life.

These structures and characteristics of slew bearings make them widely used in medium and large slewing devices such as hoisting and transportation machinery, metallurgical machinery, mining machinery, construction machinery, port machinery and automated assembly lines, meeting the needs of various complex working conditions.