How to extend the life of your slewing bearing？

Slewing bearing is widely used.  Engineering machinery is the place where slewing bearing was first and most widely used, such as earthmoving machinery, excavator, disintegrator, stacker and reclaimer, grader, roller, dynamic rammer, rock drilling machinery and roadheader, etc. How to extend the life of your slewing bearing. 

The following knowledge points are listed below:

• Select the right slewing bearing to start with

• Slewing bearing in terms of transportation and storage

• Regular review and maintenance of slewing bearing

1. Select the right slewing bearing to start with:

(1) Only buy when you can get the right product.  

(2) When you buy slewing bearing, you need to know whether the load distribution of the bearing is even and reasonable. How to install bearings in the absence of a common support surface. A common flaw in the design of support structures is that slewing bearing assumes adequate stiffness.  

(3) Local deformation will change the load, the load size of the bearing is also different.  

(4) Assuming that the correct process was not used, this would result in the bearing bearing shortcoming of slewing.  

(5) Know if bearing bolts are combined. To buy slewing bearing, it is necessary to identify how the product will be handled. Assume that the quality of the product is not up to scratch and the defect is transient. In particular, loose screws can interfere with normal operation.  

(6) Bolt holes must be designed together and many motion loads are not only important for mounting parts.  

(7) Common bolt rings help reduce the bending and load distribution of bearings, fasteners, and support structures.  

(8) Compared with traditional bearings, slewing bearing can bear large axial, radial loads and overturning moments. Nails are used to fasten them to the upper and lower supports. A group of slewing bearing usually has the effect of several sets of common rolling bearings.  

(9) The slewing bearing standard is larger than the bearing standard. The diameter is usually between 0. 4 and 10 meters, even up to 40 meters.  

2. Slewing bearing in terms of transportation and storage

(1) Slewing bearing is coated with antirust oil and wrapped in thin film and sackcloth before delivery, and its antirust period is usually 3 to 6 months. The storage temperature should be 20±10℃, and the relative humidity should not be more than 60%.  After the expiry date, the product should be maintained in time. Slewing bearing inventory shall be greased one year later and checked for flexibility of rotation. 

(2) Slewing bearing is generally fixed on a pallet or in a packing box when it leaves the factory. Transportation and storage should be kept level, no collision and extrusion, no rain, storage should be flat. The stacked slewing bearing should have a level separation. Slewing bearing generally has a lifting hole, which can be screwed into the lifting ring bolt for safe lifting. 

3. Regular review and maintenance of slewing bearing

(1) The timely maintenance and maintenance of slewing bearing can ensure the optimal performance of slewing bearing and improve the service life of slewing bearing. 

(2) Slewing bearing first used 100 working hours to check the pretightening torque of a bolt. If more than 10% of the bolts are loose, check again in the 200th working hour. 

(3) Slewing bearing will be checked every 500 working hours thereafter;The inspection interval of slewing bearing should be shortened under severe conditions. 

(4) After 2000 hours of bearing work, if a bolt is found to be loose below 80% of the required torque, the bolt and the two adjacent bolts will need to be replaced. If 20% of the bolts are found loose below 80% of the specified torque, all the bolts should be replaced. 

(5) All the bolts will be replaced after slewing bearing accumulates 14,000 hours of work. 

(6) For slewing bearing with high rotation speed or continuous rotation or frequent work, oil is added every 100 working hours. The time interval of lubricating oil filling should be further shortened under bad working conditions.  

I hope the introduction of this article will help you understand slewing bearing.  Our company specializes in producing all types of slewing bearing.  If you need slewing bearing, please contact us.