Crossed Cylindrical Roller Slewing Bearing

The crossed cylindrical roller slewing bearing is a versatile design that handles different combinations of overturning moment and axial force. It is available with an integral or split structure, as well as with a cage and spacer block to reduce friction between the rollers. For high-load applications, the crossed cylindrical roller slewing bearing is available in a full-load roller structure. This structure has groove marks and requires special maintenance to prevent the bearing from being damaged.

Double row ball slewing bearing

Double row ball slewing bearing is designed for large axial and radial loads. This type of bearing is especially suitable for medium-sized cranes and truck-mounted cranes for loading and unloading machinery. Moreover, it has a compact structure and a short communication path.

Slewing bearings work under axial, radial, tilting moment, and eccentric loading. In the past, calculations for the load capacity were made manually, but this was time-consuming and inefficient. Today, computerized mathematical modeling is used to design and analyze slewing bearings. The result is a load curve that represents the maximum load capacity of a slewing bearing during its working condition. This curve is important in choosing the right slewing ring.

Double row ball slewing bearings have three-ring constructions with balls on the upper and lower rings. They can be manufactured with lubrication holes on the inner and outer rings or with threading holes. Some double row ball slewing bearings have cages between the balls, which gives them higher loading capacity. However, they also have a higher friction and are prone to scratching.

Double row ball slewing bearings are available in different diameters and shapes, ranging from 300mm to 2000mm. Customized sizes are available upon request. These slewing bearings can be used in excavators, mining equipment, and construction machinery.

Three row ball slewing bearing

A three row cross cylindrical roller slewing bearing is a complex type of bearing with three rows of rollers. The upper and lower rows of rollers bear axial forces while the third row bears radial loads. The bearing has a large carrying capacity and is ideal for heavy machinery.

A three row cross cylindrical roller slewing bearing is characterized by a truss-like structure with cross-shaped rollers that rotate in a cross-directional manner. It can handle various combinations of axial force and overturning moment. It is available with a split or an integral structure and with cages or spacer blocks between the rollers. Its spacer block and cage reduce friction between rollers, which prevents the bearing from losing precision.

A slewing bearing has an inner and an outer ring that is incorporated with a gear to enable optimal power transmission and connection between adjacent machine components. These bearings are available with outside diameters ranging from a few millimeters to several meters. They are also manufactured in a wide range of designs and specifications.

A three row cross cylindrical roller slewing bearing is an advanced form of cross-slewing bearing. The inner ring has a spacer that prevents mutual friction between rollers. This allows the bearing to bear loads in all directions and produce stable rotational torque. This type of bearing also has greater rigidity than conventional ones, increasing their load-bearing capacity by three to four times.