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The commonly used lubrication methods are hydrodynamic lubrication and hydrostatic lubrication. The lubrication of the main bearing must be sufficient and reliable to ensure the normal operation of the limestone mill.
The main bearing bears not only the gravity of the cylinder itself, but also the weight of the abrasive and material and the impact load when they fall. It works under heavy load and low speed, and its speed is usually less than tens of rotations.
Separate sliding bearings are often used in production, and sometimes self-aligning roller bearings are also used. Bearings work at higher temperatures and are often cooled by water cooling devices. Lubrication of main bearings is very important. The main purpose of lubrication is to reduce friction and better heat dissipation.