Top 1 High Quality Slewing Bearing Installation Update 2022
Table of Contents
What is the reason why the slewing bearing is not installed smoothly or even cannot rotate?
1. The reasons for the unsmooth of the slewing bearing installaton
1. Mounting holes. The threaded hole of the slewing bearing installation hole is not standardized, the threading is not complete, and the threading is defective, so that the bolt cannot be screwed in.
2. The center diameter and chord length of the mounting hole exceed the tolerance too much, such as 3-5mm, which will cause the bolt to fail to pierce.
3. The size of the positioning hole and the step are out of tolerance and cannot be matched.
4. The bearing after heavy load has a rotating dead center or an ellipse, which makes it unable to operate normally.
5. The slewing bearing installation is not in the direction of the installation design drawing, resulting in the opposite direction of the taper pin, which has potential safety hazards.
6. The slewing bearing installation part interferes, such as tooth top interference, there is a phenomenon of gnawing teeth, and some parts conflict with each other.
7. The design of negative clearance is unreasonable, which leads to the phenomenon of inclined force, partial load and clearance after installation.
8. The design of the equipment structure is unreasonable, which leads to the failure of normal debugging.
2. The possibility that the slewing bearing installation is difficult to rotate or cannot rotate
1. Newly purchased products are inflexible in idling
Please check the production date of the slewing bearing. If the weather is cold for a long time (such as more than half a year), it is possible that the temperament such as salt mist is mixed into the raceway,
which will cause the rotation resistance to double and make the slewing bearing not work well (cold areas, winter is more prominent ) Remedy:
If it can run after afterburning and there is no other abnormality, it can be used normally.
2. Inflexible operation after slewing bearing installation
It may be that the surface of the main engine device and the surface of the slewing bearing installation are not well matched, so that the axial clearance of the slewing bearing after the installation cannot compensate for the deformation of the slewing bearing,
the slewing bearing is in a state of negative clearance, and the rolling elements are difficult to operate in the raceway (sometimes accompanied by abnormality). sound) or the large and small gears are poorly meshed;
or there are foreign objects stuck in the large and small gears. Remedy: re-process the plane of the host device to make the device plane meet the requirements;
re-adjust the meshing backlash of the large and small gears according to the requirements, especially pay attention to the gear beat position;
check to ensure that there is no foreign matter in the meshing position of the large and small gears; replace a slewing bearing with a slightly larger clearance .
3. Inflexible operation during use
The sealing strip is damaged, causing foreign objects to enter the raceway (such as poor working conditions, immersion of dust in the raceway, etc.) the deformation of the isolation block leads to difficulty in operation;
there are hard objects or other conditions at the meshing of the large and small gears, such as broken teeth.
