Briefly describe the detailed requirements and application of slewing bearings

2019-11-19

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Slewing bearing is a large-scale bearing that can accept combined loads, large axial and radial loads, and overturning moments. Slewing bearings generally have mounting holes, internal gears or external gears, smooth oil holes and sealed installations, which make the main body compact, simple to guide and easy to maintain.

Slewing bearings have four series of four-point contact ball bearings, external gear and internal gear four-point contact ball bearings, double-row angular contact ball bearings, cross cylindrical roller bearings, cross tapered roller bearings and three-row cylindrical roller composite bearings. The four-point contact ball bearing has a higher static load capacity, and the inserted cylindrical roller has a higher dynamic load capacity. The pre-interference of the inserted tapered roller bearing enables the bearing to have greater support rigidity and rotation accuracy.

Because of the increase in load capacity, the three-row cylindrical roller combined bearing leads to the bearing height, and various forces are received by different raceways. Therefore, under the same force conditions, the bearing diameter can be greatly reduced, thereby making the host more compact. A slewing bearing with high load capacity.

Slewing bearings are widely used in large rotating equipment, such as hoisting machinery, mining machinery, construction machinery, port machinery, ship machinery, high-precision radar machinery and missile launchers. At the same time, we can design, develop and produce various special structure slewing bearings according to the specific requirements of users.

The slewing ring is an important mechanical part. Large bearings that need to accept comprehensive loads, need to accept relatively large axial and radial loads and overturning moments, play a very important role in mechanical engineering, so the material selection of slewing bearings is very important. What are the materials commonly used in manufacturing slewing bearings? The following editor will give you a detailed introduction to this situation.

The sturdy and durable slewing bearings are generally made of carbon-chromium bearing steel as a whole, and the surface is made of hardened steel. If users do not make special requirements, they will usually choose 50Mn steel to manufacture. In order to meet the special requirements of customers, they will also be manufactured according to customer requirements. The customized slewing bearing has higher quality requirements and can meet the special requirements of customers.