Before the slewing bearing is used, the user needs to add grease to ensure that the slewing bearing is fully lubricated during operation. Whether the grease filling is reasonable or not has a great impact on the service life of the slewing bearing. Today we will explain to you how to fill the general slewing bearing.
First of all, let’s talk about the standard of adding grease. If the slewing bearing in use is a ball bearing, it is required to fill the raceway with grease every 100 hours of operation. If it is a roller bearing, fill the raceway with grease every 50 hours of operation. once. If the use environment is high temperature, high humidity, dusty, large temperature change or support with long continuous working time, the slewing bearing should be shortened.
After the slewing bearing runs for 100 hours for the first time, it is necessary to check the bolt pre-tightening force, and every 500 hours of operation thereafter, check the pre-tightening force;
If it is a slewing bearing with teeth, appropriate amount of grease should be applied to the gears in time, and appropriate amount of Mobil XHP222 grease should be applied in high and low temperature environments, and supplemented in time during use;
According to GB/T7324-2010 (national standard for general lithium-based grease), the slewing bearing manufacturer will add a small amount of 2# extreme pressure lithium-based grease to the slewing bearing when leaving the factory. Before the first use, the grease in the raceway must be filled evenly (The filling is judged as the sealing strip is slightly bulging).
The selection of lubricating grease, -10℃-40℃ environment (normal temperature) select 2# extreme pressure lithium-based lubricating grease. In the alpine and high temperature environment, Mobil XHP222 long-acting lithium complex grease (can withstand -40℃-150℃) is selected.
The process of betting:
1. Inject grease into the oil gun.
2. Ensure that the inner ring of the slewing bearing rotates continuously, and one person is responsible for refueling and rotating with the inner ring to avoid adding too much grease in one place.
3. Fill the grease in the gun into the raceway. At this time, there will be a small amount of grease under the seal, that is, the grease filling standard is reached.
