How to improve the service life of slewing bearings of large mechanical equipment?

Slewing bearings play an important role in large machinery and equipment as transmission components. Slewing bearings for large machinery and equipment require large axial loads, large tilting moments and large radial loads, such as stacker-reclaimers, overweight transport machinery, port cranes, ladle turrets, shield tunneling machines, etc. Therefore, qualified three row cylindrical roller slewing bearings are widely used in the field of machinery and equipment. So do you know how to improve the service life of the three row roller slewing bearing used in large machinery and equipment? Next, Unique Transmission will briefly introduce it from a design perspective.

1.Enlarge the installation foundation of the slewing bearing

Appropriately increase the thickness of the slewing bearing installation foundation and the plate thickness of the turntable, improve the strength of the installation foundation and the turntable, avoid elastic deformation due to insufficient strength of the installation foundation and turntable during use, which will affect the service life of the slewing bearing.

2.Increase the safety factor when designing the slewing bearing

The safety factor can be appropriately increased to prevent damage to the slewing bearing. When designing large diameter slewing bearings, the safety factor should be appropriately increased, for example, increase the slewing bearing’s height, appropriately increase the rollers number, increase the rollers diameter, try to choose segmented or integral metal cages to improve the performance and reliability of each component and increase the service life of the slewing bearing.

3.Heat treatment of slewing bearing

Improve the manufacturing requirements of the slewing bearing to prevent damage to the slewing bearing, in the slewing bearing manufacturing process, the emphasis is placed on the heat treatment process. Under the premise of ensuring that no quenching cracks appear on the surface of the raceway, the intermediate frequency quenching speed can be reduced, the greater surface hardness and quenching layer depth can be obtained, improve the pressure resistance of the raceway.

Of course, no matter how good the product is, if maintenance is not carried out during the use period, it will seriously affect the service life, the slewing bearing product is the same. In order to prolong the service life of the product, we must do a good job in maintenance and develop a good habit of regular maintenance.