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How to maintain the slewing bearing after work


The slewing bearing plays a very important role in large construction machinery. In order to prolong the life of the slewing bearing, it is necessary to do a good job in the maintenance of the slewing bearing. Especially after the work, the maintenance of the slewing bearing is more important. Then, how to maintain the slewing bearing after work?


How to maintain the slewing bearing after work


Most customers have misunderstandings in the maintenance of slewing bearings, thinking that the lubricating oil of the slewing bearing and the lubricating cycle of the big and small arms are the same, and they should be smeared every day. In fact, this approach is wrong. If the lubrication cycle is too short, there will be too much lubricating oil in the bearing, which will break through the dust ring and leak out. When there is leakage, impurities will also enter the inside of the bearing, which will damage the normal operation of the bearing. Generally, the lubricating interval of the slewing bearing is about 10 days. The lubricating period can be adjusted appropriately for different working intensities. It is most suitable to apply it once a week.


The No. 2 extreme pressure lithium-based grease applied to the slewing bearing when it leaves the factory should be filled with new grease according to different working conditions when it is activated. The raceway of the slewing bearing should be filled with grease regularly. Refuel once every 100 hours of operation, and refuel once every 50 hours or so for roller bearings. Under special circumstances, such as tropical areas, high humidity, dust, and large temperature difference, the lubrication cycle should be shortened during continuous operation, and new grease must be added before and after the machine stops running for a long time. Fill with grease until it seeps out from the sealing belt. When injecting grease, slowly rotate the slewing bearing to make the grease fill evenly. The tooth surface should be cleaned frequently. You can choose to add lubrication according to your own situation. For grease, the pre-tightening force of the bolts should be checked in time during the first 100 hours of transfer, and every 500 hours of rotation thereafter to ensure sufficient pre-tightening force. When hard objects enter the tooth meshing area, regularly check the integrity of the seal, and if it is found to fall off, it should be reset in time.


slewing bearing


The slewing bearing must be regularly maintained after use, so as to prolong the service life of the slewing bearing. If you want to know more about slewing bearing, or want to customize related products, please contact us, we will serve you wholeheartedly, thank you.