As a vulnerable part of the pulverizer, the vertical grinding roller body and wear-resistant lining plate are damaged by the pressure of the roller mill during the use, which requires the strict assembly of the vertical grinding roller bearings. Therefore, it is very important to select the appropriate bearing type and replace the overused bearings on schedule.
1. The grinding roller bearing is damaged.
Damage state: the so-called wear is the wear of raceway surface or rolling surface, roller end face, shaft ring surface and concave surface of cage caused by friction.
Causes: invasion of foreign matters, development caused by rust and electric corrosion, poor lubrication, and slipping caused by irregular movement of rolling elements.
Measures: improve the sealing device, clean the bearing housing, fully filter the lubricating oil, and check the lubricant and lubrication method.
2. Sliding wear.
The shear stress of the grinding roll and the hydraulic pressure of the grinding roll caused by the grinding angle of the material are caused by the relatively repeated small sliding between the two contact surfaces, and the wear is generated on the contact part between the raceway surface and the rolling body. Due to the occurrence of reddish brown and black wear powder, it is also called micro vibration wear corrosion.
If the lubrication is poor, apply proper lubricant to the mating surface. According to the investigation, poor lubrication is one of the main reasons for premature bearing damage. The main reasons include: failure to fill lubricant or lubricating oil in time, failure to fill lubricant or lubricating oil in place, improper selection of lubricant or lubricating oil, inaccurate lubrication method, etc.
Suggestion: select the correct lubricant or lubricating oil and use the correct lubrication filling method.
It can be seen that there are many reasons for the early damage of the grinding roller bearing of the pulverizer, and the above are the main reasons to be considered, sometimes it may be a comprehensive reason. Accurate bearing selection, accurate installation method, and accurate lubrication method and lubricant selection are the important principles of SMMVIK Machinery when installing the pulverizer.
SMMVIK Machinery mainly develops and produces crushing equipment, sanding equipment, milling equipment, etc. it has many years of research and production experience and is loved by many customers. If you are interested in our equipment, you are welcome to consult, We have professional customer service personnel to introduce it to you. At the same time, we can also configure production lines according to your budget, output, feed particle size and discharge particle size to maximize your income, We look forward to your arrival.
