Triple-row roller slewing bearings without teeth is also known as the combined slewing bearing. It is a new type of bearing with high load-bearing capacity. It is mainly used in occasions where the load is relatively large, the load-bearing is more complex, and the large tilting moment is required.
Triple-row roller slewing bearings without teeth bears the axial force and tilting moment in two directions, which is borne by the upper and lower rows of horizontal rollers, and the radial force is borne by the vertically arranged third row of rollers. The bearing capacity of each rolling element has a clear division of labor, and the upper and lower rows of rollers bear 90°, and the bearing capacity of each bearing roller is fully exerted. Therefore, it has a large bearing capacity of axial force, radial force and overturning moment.
Triple-row roller slewing bearings without teeth-Main feature
1. The number of rolling elements (contact points) has increased, thereby reducing the load on each rolling element; after changing from point contact to line contact, the contact stress can be reduced and the load carrying capacity can be improved.
2. Since the radial force and the axial force are respectively borne by the two rows of rollers, the direction of the reaction force is consistent with the main direction of the load received by the support, so the contact load between the rollers and the raceway can be reduced.
3. Under the condition of bearing the same load, it is smaller than other types of supports with smaller dimensions, smaller cross-sections, and lighter weight, which can save materials and reduce material costs.
4. The raceway of the rolling ring is flat and cylindrical, making it easier to process.
5. In addition to bearing the radial force, the vertically mounted roller also has the guiding function of bearing the tipping moment.
Triple-row roller slewing bearings without teeth satisfies the 360° requirements of construction machinery, especially cranes, stackers, ladle turrets, etc., for slewing bearings.
LYXQL Slewing Bearing Co., Ltd. founded in 2003, is the leader manufacturer of large size slewing bearings in China. As one of the national key high-tech enterprises, LYXQL became the GEM listing company successfully on July 13, 2020 (stock code 300850).