The four-point contact ball bearings are radial single row angular contact ball bearings featuring raceways that can handle axial loads acting in both directions. A limited radial load can be supported for a given axial load.
Four Point Contact Ball Geared Slewing Bearing for Truck Crane. Following the gradual recovery of the slewing bearing market in 2018, domestic demand for slewing bearings will maintain its growth momentum in the first six months of 2019. This time, the market is recovering from short-term or medium -to-long term.
Four Point Contact Ball Geared Slewing Bearing for Truck Crane.From the point of view of largedemand changes, as the domestic construction machinery enters the new maintenance cycle, the gradual implementation of the National Belt and Road Initiative, the construction machinery sector as a whole picks up, and strong demand for construction machinery parts is transmitted to the slewing bearing market, resulting in an increase in demand for slewing bearings.
Four Point Contact Ball Geared Slewing Bearing for Truck CraneThe reasons for the rise in the price of slewing bearings and trends?
Due to the continuous influence of the state’s capacity-reduction policy on the steel industry, the supply of raw materials for slewing bearings was strained. Compared with the strong growth in market demand, the supply of slewing bearings is in short supply. From a price point of view, in the future, the slewing bearing market price will keep increasing.
Four Point Contact Ball Geared Slewing Bearing for Truck Crane. Upon an analysis of a failure to the slewing bearing, some engineer puts forward a countermeasure in which a three-row roller slewing bearing replaces the original ball/roller combined slewing bearing, thereby greatly extending the slewing bearing's service life and guaranteeing the smooth running of the onsite equipment.
Four Point Contact Ball Geared Slewing Bearing for Truck Crane. Slewing bearing failure analysis in its actual running often appears with some faults such as overload, abnormal impact, groove wear, noise, material properties, subsurface stresses. This paper mainly analyzes the causes of the faults from three aspects of the bearing's installation mode, its load condition, and its lubrication maintenance. So the solution is putted forward to improve the slewing bearing's accuracy.