Cement mill main bearing smooth

**Cement Mill Main Bearing Lubrication and Maintenance** Home > Bearing Knowledge > Cement Mill Main Bearing Lubrication Source: Bearing Network | Date: February 10, 2014 --- Maintaining proper lubrication is essential for the smooth operation of a cement millâ€™s main bearing. Operators must regularly monitor the oil temperature, quality, and level in the main bearing. If the bearing temperature becomes abnormal, it's important to increase inspection frequency and report any issues immediately. In practice, two situations are most likely to cause serious damageâ€”burning of the bearing bush. First, if the bolts securing the scraper on the upper cover of the main bearing loosen, the scraper may shift out of place, preventing it from effectively scraping the lubricating oil. This can lead to oil dripping onto the hollow shaft journal, causing the bearing to run dry and eventually burn. Second, dust or other impurities can block the oil return path in the main bearing housing, preventing the fixed oil ring from drawing oil from the base chamber. This lack of lubrication can also result in burning of the bearing bush. It's important to follow the recommended oil change intervals and ensure the correct amount of lubricant is added. Proper storage of both new and used oil should also be maintained to prevent contamination and ensure long-term performance. Choosing the right type of lubricant and adding appropriate additives can significantly improve the performance of the main bearing. The main bearing of a cement mill operates under high load, high linear speed, and frequent impact and vibration. Additionally, the clearance between the bearing bush and the hollow shaft is large, and factors like manufacturing limitations affect its shape, dimensional accuracy, and surface finish. As a result, complete liquid lubrication is often not achievable. Instead, the bearing relies on a thin oil film that reduces friction and wear. The choice of lubricant depends on several factors, including the operating temperature, the linear speed of the hollow shaft, and the load on the main bearing. In southern regions, for example, a 2.2m x 6.5m cement mill main bearing can use N220 or N320 industrial gear oil during winter and summer, respectively. Since the discharge end of the mill typically runs at a higher temperature than the feeding end, it may be beneficial to use a higher viscosity lubricant at this location. Additionally, adding a stearic acid polar additive to the lubricating oil can enhance the strength of the oil film, helping to prevent film rupture and ensuring continuous protection of the bearing. --- **Related Bearing Knowledge:** - Causes of fan bearing failure and methods for cleaning sliding bearings - Details about bearing dimensions and component sizes - Common knowledge about contact ball bearings - Analysis of early failures in high-level flat screen drive shaft bearings This article was originally published on China Bearing Network. For more information, visit [http://www.chinabearing.net](http://www.chinabearing.net) Previous: Bearing Seal Types Next: How to Determine if a Bearing Can Be Reused After Disassembly

Dispenser Mass Flow Meter

Sealand is a trustworthy manufacturer of CNG Dispenser Mass Flow Meter, LNG Dispenser Mass Flow Meter, LPG Dispenser Mass Flow Meter, ATEX, CE & IECEx approved.

With its high accuracy, wide rangeability and reliable performance, Sealand meter has been applied in many kinds of industries during the last 8 years. Unlike others who only focus on the measurement of liquid at normal pressure & temperature, Sealand has conquered the difficulty in the measurement under severe conditions, such as high pressure, high viscosity, high & low temperature.

Take CNG (compressed natural gas) for example. As the saying goes, the meter can measure anything else if it can measure CNG. It is quite hard to measure gas under high pressure. The sensor must be able to bear high pressure; in this way, the thickness of flow tube must be increased, so the transmitter shall be more sensitive to detect the signal; however, Sealand made it. Sealand's first model is specially designed for CNG dispenser, and now thousands of this model are put into use on the market.

Here are the pictures of Sealand Mass Flow Meter in Dispenser for your reference.

Mass Flow Meter 1