bulk slewing ring

1.What is the reason for the overturning and shaking of the slewing ring?

With the rapid development of the machinery industry, slewing rings have been widely used in marine equipment, construction machinery, light industrial machinery, metallurgical machinery, agricultural machinery and other industries. In the process of installation and use, improper use or maintenance of the slewing ring may bring about various problems.

1. The mounting bolts are loose, resulting in excessive overturning and shaking during work. When the slewing ring is shaken, the connecting bolts should be considered first. All the connecting bolts of the inner and outer rings should be checked immediately to see if there is any looseness. If there are any, tighten them according to the torque requirements.

2. The rigidity of the steel structure supporting the slewing ring is insufficient, and elastic deformation occurs when the slewing bearing is under heavy or eccentric load, resulting in the overall overturning and shaking of the slewing bearing. This problem is solved by reinforced steel structure.

3. Check whether the operation is seriously overloaded. Overloading will also cause the slewing bearing to shake too much, so it must be operated strictly and reasonably according to the regulations.

4. Long-term overload or severe eccentric load operation will cause the raceway to be crushed by the rolling elements, resulting in excessive clearance beyond the normal range. If such a situation occurs, the problem is more serious, and it is necessary to contact the slewing bearing manufacturer to solve it in time to ensure the normal use of the bearing.

In order to ensure the normal use of the slewing ring bearing, the use and maintenance should be carried out in strict accordance with the “Installation and Operation Manual”. If there is a serious phenomenon of overturning and shaking during use, it must be stopped in time for inspection to prevent long-term sick operation to the slewing ring bearing. cause more damage.

2.What problems will affect the service life of the slewing ring?

Slewing ring is an important core component of equipment rotation. If the slewing bearing fails during the operation of the equipment and cannot rotate normally, it will cause equipment downtime and production paralysis.

It is generally very troublesome to replace the slewing ring, so everyone generally chooses a slewing bearing with reliable quality. The bearing is installed on its own equipment. After the slewing ring is installed, everyone hopes that the slewing bearing can work stably and reliably, and the longer the service life, the better. What are the factors that affect the life of the slewing bearing?

1. The problem of the equipment itself

1. The rigidity of the equipment installation foundation is insufficient. When the slewing ring is running under heavy load, the rigidity of the equipment installation foundation cannot provide a good support for the slewing ring, resulting in elastic deformation of the slewing bearing, uneven force when the slewing bearing rotates, and long-term use. It will cause damage to the slewing bearing and affect the service life.

2. The flatness of the installation foundation is not good. There will be a gap between the slewing ring and the installation foundation during installation. The correct way is to use a gasket with a suitable height to level the gap, but the operator often ignores this during installation and use. ,

In this case, the slewing bearing will warp and deform after the bolt is pressed, causing the channel to be deformed. After the deformation, the channel and the steel ball are not in good contact, and the clearance value is not uniform and the rotation is inflexible, which affects the use of the slewing bearing life.

2. Overload operation

When the slewing bearing is designed, the bearing capacity has been clarified, such as how much load and how much overturning moment it can bear. If the actual load exceeds the bearing capacity of the slewing bearing during use, it belongs to overload operation.

During overload operation, the load on the steel ball exceeds the limit load, and there will be collapse blocks, fatigue spalling, and craters in the raceway. The collapse will cause serious damage to the slewing ring.

It is possible that a short-term overload operation will cause devastating damage to the slewing bearing, which will seriously affect the service life of the slewing bearing, and overload operation may easily lead to safety accidents.

3. Pollution

Pollution can also lead to premature damage of the slewing bearing. Pollution means that dust particles, water, etc. enter the bearing raceway, or foreign matter enters the tooth meshing of the slewing ring. Damage to the slewing bearing, contaminants will also cause the slewing bearing to corrode, resulting in the deterioration of the grease, which will shorten the life of the slewing bearing.

4. Lubrication

The lubrication system can reduce the friction coefficient when the slewing bearing is running, achieve very small rolling friction or sliding friction, and also prevent the slewing bearing from rusting. Damaged teeth and lack of long-term lubrication are one of the main causes of premature failure of slewing ring bearings.