All NAF turntable bearings cannot prevent wear, and while wear cannot be prevented, it is better to correct for wear.
During the correction period, the slewing bearing is always at room temperature, without internal stress, cracks, annealing, softening, etc., high strength, and does not fall off. This is the real advantage of the slewing bearing.
When the ring gear is broken, it needs to be partially repaired and welded.
Partial repair welding: First remove the damaged residual cracked matrix with a portable grinding wheel, and then clean it with gasoline (motor oil); preheat it in the same position with a welding torch until the specified temperature is reached, and use a medium carbon steel electrode to push the tooth at the damaged position The prototype of the tooth is welded, but it is 1mm-2mm higher than the normal tooth surface.
When a whole tooth of the ring gear is damaged, it can be cut off along the tooth root, and the tooth root can be filed into a regular shape. Then store and cut a tooth on the same kind of waste ring gear, process it into a shape corresponding to the base material, put it into the groove, and use the tooth template to clamp and position it. To ensure the consistency of the tooth pitch, after tightening with a double wire chuck, weld with low-carbon steel around the teeth. Use tools such as files to smooth the weld seam to ensure the meshing of the gear teeth is stable.
