The mistake of lubricating the slewing bearing you should avoid

The correct use, maintenance and oil injection of slewing bearing affect the service life and work efficiency of slewing bearing. This article mainly introduces the mistake of lubricating the slewing bearing you should get. 

Here are the main points of the article:

• Slewing bearing lubricating for the first time

• Slewing bearing's weekly oil replenishment

• Slewing bearing lubricating points for attention

1. Slewing bearing lubricating for the first time:

Slewing bearing system in the condition of non-rotating start lubricating pump, adjust the cheer for continuous state, start the lubricating pump continuous lubricating, until eight outside lubricating points corresponding to the location of the sealing ring in a fresh grease after extrusion, and then rotate about 12 ° (lubricating point gap in the middle of the area) add oil to lubricating points out in the corresponding position, 12 ° rotating come on again to give oil, rotating four times for a complete process. This note in oil after fill lubricating points near can enter the space adjacent roller and cage area of the outer ring. Slewing bearing must be filled at the first refueling. 

2. Slewing bearing's weekly oil replenishment:

Slewing bearing system in the condition of non-rotating start lubricating pump, adjusted to continue refueling, refueling about half an hour, and then rotate about 12 ° (lubricating point gap in the middle of the area) to go about half an hour, 12 ° rotating again come on half an hour, for a complete process 4 times. So on, so that the injection into the oil after fill lubricating points near can enter the space adjacent roller and cage area of the outer ring. The final refueling time per week of slewing bearing is based on the uniform outpouring of oil from the outer ring. 

3. Slewing bearing lubricating points for attention

(1) Upon receipt of slewing bearing, the bearing shall be re-filled with new grease according to different working conditions. 

(2) Slewing bearing shall be regularly loaded with grease.  According to different types of slewing bearing, the specific loading time is as follows:

A: ball slewing bearing: grease is added every 100 hours of operation;

B: roller slewing bearing: grease is injected every 50 hours of operation;

(3) Slewing bearing in use process should often clean slewing bearing surface of sundry, check the slewing bearing sealing strip is aging, cracked, damaged or out of, if any one of them happens, should be timely replacement of sealing strip, prevent rolled into debris within the tao and the loss of the grease, after the replacement should daub appropriate grease, avoid the rolling element and raceway hair stuck or rust. 

(4) Because there are many comprehensive factors in the use process, users can choose the best grease according to the specific situation, for example, raceway can be used: no.  3, no.  4 graphite grease, industrial grease, no.  203 grease, no.  7002 high and low temperature bearing grease and no.  2 aluminum base grease. 

(5) Since the installation of slewing bearing, the preload of the bolts shall be checked after the first 100 hours of operation.  After that, the bearing shall be checked once every 500 hours of operation and shall be maintained to the best of its ability. 

(6) If a bolt is found loose below 80% of the specified torque after slewing bearing has worked for 2,000 hours, the bolt and the adjacent two bolts shall be replaced. If 20% of the bolts are found loose below 80% of the specified torque, all the bolts shall be replaced with new ones. After the cumulative work of the slewing bearing reaches 14,000 hours, all the bolts will be replaced with new ones.  (we recommend that the fasteners be re-strengthened after the first two to four months of use, and then the annual systematic inspection will be carried out. )

(7) Pay close attention to the operation of slewing bearing in use.  If noise, impact and power are found to increase suddenly, the machine shall stop immediately for inspection until all faults are eliminated. 

(8) Slewing bearing is in use.  Direct erosion of slewing bearing with water is prohibited to avoid water entering the raceway and causing rust. Strictly prevent the hard foreign body from approaching or entering the meshing area, so as not to cause tooth injury or unnecessary trouble. 

I hope the introduction of this article has helped you understand slewing bearing.  If you need slewing bearing, please contact us.