What is the information do you know about the slewing bearing?

As the slewing ring of the excavator, the probability of serious failure is not high, but once a failure occurs, it will cause a very large loss of work stoppage, maintenance and replacement! For example, the slewing bearing is broken, etc. Therefore, we should pay more attention when using slewing bearing.

• What should I do if the slewing bearing makes noise during use?

• What are the advancements in the production of slewing bearings?

• What should I do when there is a foreign body in the slewing bearing?

What should I do if the slewing bearing makes noise during use?

The slewing bearing produces abnormal sound during use, (first of all, it should be determined whether it is the sound from the slewing bearing. The sound from some steel structures or other components is often mistaken for the sound from the slewing bearing. Therefore, it can be used to stop the rotation of the slewing bearing. Some other components are operating normally to determine the source of the noise) There are several reasons for the following reasons: the lack of grease in the raceway, the sound of the rolling element and the spacer colliding, which can be eliminated after timely oil filling; the raceway is mixed with foreign objects, such as sand, Iron filings, etc., this situation is often accompanied by difficulty in rotation (generally, this situation is likely to occur in environments with harsh operating conditions), and attention should also be paid to whether the sealing strip is damaged; the mounting bolts are loose, resulting in elastic deformation of the slewing bearing. The deformation position produces negative clearance, etc., to exclude the above situation, if there is still abnormal noise in the slewing bearing, please contact the service department for processing.

What are the advancements in the production of slewing bearings?

(1) Through finite element analysis, appropriately increase the thickness of the plate at the connection between the turntable and the slewing bearing, so as to improve the structural rigidity of the turntable.

(2) When designing large-diameter slewing bearings, the safety factor should be appropriately increased; appropriately increasing the number of rollers can also improve the contact between the rollers and the raceway.

(3) Improve the manufacturing accuracy of the slewing bearing, focusing on the heat treatment process. The intermediate frequency quenching speed can be reduced, and a larger surface hardness and hardening depth can be obtained to prevent quenching cracks on the surface of the raceway.

What should I do when there is a foreign body in the slewing bearing?

When there are foreign objects such as sand particles and iron filings inside the slewing bearing, non-periodic vibration will occur, and at the same time, there will be a failure of inflexible rotation. In this case, it is necessary to clean the bearing, shaft, seat hole and matching parts before installation, and remove foreign matter in the lubricant in time; remember to avoid using plastic cages with impure materials or embedded foreign matter, so as to remove corresponding abnormal sound.

With the increase in market demand, the types of slewing bearings are also expanding. To meet these growing demands, LYXQL slewing bearing Co., Ltd.  has various slewing bearings and they are all more effective, reliable, and consistent.