English 
日本語 
français 
Deutsch 
Español 
italiano 
русский 
português 
العربية 
Türkçe 
Polska 
Nederland 
May 15 2023
The Stability Issues of the Turntable Bearing
Read More >
The slewing bearing of the crane is an important "joint" of the crane, and its maintenance is very important. Here, SWBTEC will teach you how to maintain the slewing bearing in four steps.
Before each operation of the crane or at least once a week, check the bolts on the slewing bearing; after 100 working hours of the first operation of the slewing bearing, check whether the bolts are loose, and then check again after 300 working hours; check every 500 working hours afterwards; shorten the inspection interval in harsh working conditions.
When replacing the bolts, wipe the bolts clean, apply thread locking adhesive, and then tighten them; regularly check the fastening bolts to avoid the danger of bolt fatigue failure;
If loose bolts are found during inspection, please stop the construction operation and immediately contact the local after-sales service engineer to have a professional inspection and determine whether to disassemble and inspect immediately.
Regularly check the flexibility of the rotation; if noise or impact is found, immediately stop and check and troubleshoot, if necessary, contact local Sany service engineers for disassembly and inspection;
Regularly check whether there are cracks or damage on the slewing ring, and whether there are meshing, biting, or stripping phenomena on the meshing tooth surfaces;
Regularly check the integrity of the seals. If the seals are found to be damaged, replace them in time. If they are found to be detached, reset them in time.
Apply rust-proof oil to the slewing bearing ring in time.
When using the equipment, strictly prevent hard foreign objects from approaching or entering the gear meshing area.
The rolling track must be regularly lubricated with oil or grease according to the working environment. The slewing bearing must be filled with grease before and after long-term storage of the equipment.
If a steam jet cleaner or fixed water sprayer is used to clean the crane, be careful to prevent water from seeping into the connection of the slewing bearing, and then lubricate the connection of the slewing bearing.
In special working environments, such as tropical areas, high humidity, heavy dust, large temperature changes, and continuous operation, the lubrication cycle should be shortened.
The grease should be added when the slewing bearing is slowly rotating. When the lubricating grease overflows from the seal, it indicates that the addition is complete, and the overflowing grease will form a thin film, which plays a sealing role.
