excavator swing bearing

Our company often provides slewing bearings in this field, such as single-row ball type, 011/012.60.2000, 011/012.60.2240, 011/012.60.2500, 011/012.60.2800, 011/012.60.3150, etc., three-row roller type, etc. Slewing bearings include 131/132.45.2500, 131/132.45.2800, 131/132.50.3150, 131/132.50.3550, 131/132.50.4000, 131/132.50.4500, etc., as well as double-row ball slewing bearings 021/022.50 .2500, 021/022.50.2800, etc.

Crossed roller slewing bearing is a key component commonly used in construction machinery and lifting equipment. It has the advantages of strong load-bearing capacity, flexible rotation and long service life. Crossed roller slewing bearing, referred to as slewing bearing, is a slewing bearing with rolling elements. Bearing, commonly used in construction machinery and lifting equipment. It realizes return through the rolling of rolling elements Rotating motion, bearing and transmitting loads, while having high stiffness and load-bearing capacity.

The three-row roller slewing bearing consists of three races, with upper and lower and radial raceways separated, so that the load of each row of rollers can be accurately determined. It can withstand various loads at the same time and has the largest carrying capacity among the four structural products. It has relatively large shaft and radial dimensions and a solid structure. It is especially suitable for heavy machinery requiring larger diameters, such as bucket wheel reclaimers, Wheeled cranes, port cranes, ladle rotary tables and large-tonnage truck cranes and other machinery.

The double row ball slewing bearing has three seat rings. The steel balls and isolators can be directly arranged into the upper and lower raceways. According to the stress conditions, the upper and lower rows of steel balls with different diameters are arranged. This kind of open assembly is very convenient. The bearing angle of the upper and lower arc raceway is 75 degrees. It can bear a great deal of axial force and overturning 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 ball slewing bearing are relatively large and the structure is fastened. It is especially suitable for handling tower cranes, truck cranes and other loading machines that require medium or above diameters, military products. The double-row four-point contact ball slewing bearing structure is similar to the single-row ball slewing bearing, the difference is that it uses two rows of steel balls as rolling elements, the two rows of steel balls have the same size, and a single isolation block is set between the steel balls. The inner and outer rings are integral, and the steel balls are loaded by plugging the holes. It requires a product for a heavy-duty, radially constrained host. Double row different diameter ball slewing bearing structure is characterized by the upper and lower double-row steel balls, inner and outer rings, isolation blocks and lubrication and sealing devices. However, the double-row different diameter slewing bearing is a three-piece slewing bearing, and its structure is more complicated.

Slewing ring bearing is widely used in excavator equipment. It belongs to wear parts. We are specialized in the production of engineering machinery slewing bearings, drive shafts and other gear parts. If you only need the bearing parts like steel balls, rollers, cages, it is also available. For some common model excavators’slewing bearing, we have ready stock and can deliver within one week. PC200, PC220, PC300 is our hot selling models and also the drive gear shaft. If you have old slewing bearing in hand, we can instruct you to measure the detailed size to make a professional drawing and then manufacture it for you.