The single-row four-point contact ball slewing bearing is composed of two races, with compact structure and light weight. The steel ball is in contact with the arc raceway at four points, and can bear axial force, radial force and tipping moment at the same time. Construction machinery such as rotary conveyor, welding manipulator, small and medium-sized crane and excavator can be selected.
The single-row cross-roller slewing bearing consists of two races, with compact structure, light weight, high manufacturing precision, small assembly clearance, and high requirements for installation accuracy. Force, tipping moment and larger radial force are widely used in lifting and transportation, construction machinery and military products.
The double-row ball slewing bearing has three seats, and the steel balls and spacers can be directly discharged into the upper and lower raceways. According to the stress conditions, two rows of steel balls with different diameters are arranged. This kind of open assembly is very convenient, and the bearing angle of the upper and lower arc raceways is 90°, which can bear 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-row reducing ball slewing bearing are relatively large and the structure is tight. It is especially suitable for loading and unloading machinery such as tower cranes and truck cranes that require medium or larger diameters.
The three-row roller slewing bearing has three races, and the upper and lower and radial raceways are separated, so that the load of each row of rollers can be accurately determined. It can bear various loads at the same time, and is the one with the largest bearing capacity among the four products. The axial and radial dimensions are large and the structure is firm. It is especially suitable for heavy machinery requiring large diameters, such as bucket wheel excavators, wheel Cranes, marine cranes, port cranes, molten steel running table and large tonnage truck cranes and other machinery.
The ball-column slewing bearing is mainly composed of an outer race, an inner race, rollers and steel balls. The inner race and the outer race each have a horizontal linear raceway and a spherical raceway, and the rollers are located in the horizontal linear raceway. In the raceway, the steel balls are located in the spherical raceway. The horizontally placed rollers bear the axial force, the radial force is borne by the steel ball, and the tipping moment is jointly borne by the two. It can not only bear large axial force, but also bear certain tipping moment and radial force, and has a small cross-sectional size. This type of product is mainly used in construction machinery and equipment such as stackers and reclaimers.
Light slewing bearings are divided into flange type and thin type. These two types of slewing bearings can be subdivided into gearless, external gear and internal gear slewing bearings.
The light slewing bearing has the same structural form as the ordinary slewing bearing, with light weight and flexible rotation. Widely used in food machinery, filling machinery, environmental protection machinery and other fields.
Slewing drive is a special slewing deceleration product derived from slewing bearing products with high integration, large reduction ratio, simple structure, convenient use and maintenance. The inner and outer rings respectively realize the input and output of driving power, so that the slewing drive can not only realize 360-degree rotation without a stop, but also install the driving power source on the basis of the slewing bearing frame at the same time, so its transmission efficiency is high, and it is a mechanical transmission. A new member of the device family. And because it is essentially a reduction gear, it can also be called a rotary reducer, a turntable reducer or a drive turntable.