Slewing Support Bearing

Slewing bearing has four series of toothless, external and internal toothed 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, of which four-point contact ball bearings have higher static load capacity, cross cylindrical roller has higher dynamic load capacity, The pre-interference of cross-tapered roller bearing can make the bearing have greater support rigidity and rotation accuracy. The bearing diameter of the three-row cylindrical roller combined bearing can be greatly reduced under the same load because the bearing capacity is increased to the bearing height and various forces are borne by different raceways. Therefore, the main engine is more compact is characterized by a high bearing capacity of the slewing bearing.

1. Three-row combination roller slewing bearing

The three-row roller slewing bearing has three seat rings and radial raceway separately, so that the load of each row of rollers can be exactly determined, can withstand various loads at the same time, is one of the largest bearing capacity of the four products, the shaft and radial size are larger and strong structure, especially suitable for heavy machinery requiring larger diameters. Such as bucket excavator, wheeled crane, Marine crane, ladle rotary and large tonnage truck crane and other machinery.

2. double row angular contact ball slewing bearing

The double volley-ball slewing bearing has three seat rings, the steel ball and the isolation block can be directly discharged into the upper and lower raceway, and the upper and lower two rows of steel balls with different diameters are arranged according to the stress condition.

This open assembly is very convenient, the bearing Angle of the upper and lower arc raceway is 90°, and it can withstand a large axial force and tipping moment. When the radial force is greater than 0.1 times the axial force, the raceway must be specially designed. The axial and radial dimensions of the double volleyball slewing support are relatively large, and the structure is solid, especially suitable for the loading and unloading machinery such as tower cranes and truck cranes with medium or higher diameters.

3. Single row cross roller slewing bearing

Single-row cross roller type slewing bearing, composed of two seat rings, compact structure, light weight, high manufacturing accuracy, small assembly clearance, high installation accuracy requirements, roller is 1:1 cross arrangement, can withstand axial force, large radial force and tipping moment. It is widely used in lifting and transportation, construction machinery and military products.

In addition to a variety of construction machinery, the scope of application of slewing bearings has been gradually expanding, and similar port equipment, metallurgical equipment, drilling platforms and other equipment platforms have begun to use slewing bearings in a wide range of places instead of original bearings.

Port equipment: port crane, front crane

New energy equipment: wind power equipment, solar power equipment

Metallurgical equipment: metallurgical crane, ladle rotary table, grab steel machine, mud gun, oxygen blowing device

Amusement equipment: Ferris wheel, etc

Airport equipment: Airport tanker

Military equipment: radar, tanks, etc

Robot: palletizing robot, welding robot, manipulator

Medical equipment: Gamma knife

Environmental protection equipment: mud scraper

Parking equipment: Tower garage

Drilling platform equipment, kitchenware equipment, CNC equipment (wire cutting machine, quenching machine), brick machine