The bearing can be said to be the pillar inside the machine and can support the operation of the whole machine. Therefore, in construction machinery, slewing bearing is indispensable, its status is pivotal, and it has a certain supporting effect and effect. For the function and classification of slewing bearing, Cixi Yundie Bearing Co.,Ltd will answer in detail.
According to the structure type, the slewing bearing can be divided into the following types:
In general, slewing bearings can be divided into four-point contact ball slewing bearings, crossed cylindrical slewing bearings, roller slewing bearings, double-row four-point ball slewing bearings, double-row different-diameter ball slewing bearings, ball-roller combinations and three-row Different structural types such as cylindrical roller combined slewing bearing. In these structural types, it can be divided into three types: toothless type, external tooth type and internal tooth type.
In the slewing bearing, the four-point contact ball slewing bearing has a larger dynamic load capacity, the crossed cylindrical roller slewing bearing has a higher static load capacity, and the three-row cylindrical roller combined slewing bearing leads to the improvement of the bearing capacity. In the height direction of the bearing, various loads are borne by different raceways and roller sets, so under the same stress conditions, the diameter of the raceway is greatly reduced, which has the characteristics of making the mainframe more compact and a high load carrying capacity. Slewing ring.
The slewing bearing can withstand a large amount of axial load, radial load and overturning moment simultaneously. Generally, the slewing bearing is equipped with mounting holes, lubricating oil holes and sealing devices, which can meet all kinds of mainframes working under different working conditions. In addition, the slewing bearing itself has the characteristics of compact structure, easy guidance and rotation, easy installation and easy maintenance, and is widely used in engineering, mining, metallurgy, wind power generation, ships, ports, petroleum, chemical industry, light industry, medical equipment, food, Large slewing devices in vehicles, robots, aerospace, radar and military industries.