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.
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.
A computational procedure for calculation of Slewing Bearing Failure is presented. The calculation is based on the strain-life approach, and it takes into consideration depth-dependent material properties of the slewing bearing raceway.
Shock loads, especially in the radial direction, must be avoided as this may damage the raceways.
If stacked on a pallet then care must be taken not to dislodge seal strips or grease fittings during
movement. Wooden or rubber spacers would be of benefit between each bearing. External gear
teeth (especially) should be protected from any impact damage.
As supplied slewing rings are generally packed for storage in a covered store and for a period not
exceeding 6 months. Light surface corrosion can usually be removed from exterior surfaces – and it is more important that the raceways are well greased and rust free. Standard commercial solvents can be used to degrease the slewing ring if necessary.