A rotary kiln through the inner body and the wheel contact surface with the kiln body transfer power to the wheel with the structures. General kiln and tire stiffness coefficient of thermal expansion there are differences. Therefore, the inner diameter of advance wheel is designed with the outer diameter of the kiln. When moving the kiln and wheel contact surface with the resulting dislocation phenomenon known as: rolling shift, rolling displacement abnormal, contact surfaces or irregular bite dislocation occurs, but this phenomenon is often difficult to judge. This is because the kiln structure itself an exception occurs, each kiln one due to design features and the conditions under which, after years of running the formation of the law. Because each kiln operation has shortcomings. These drawbacks not only an unnecessary waste of power and shorten the life of the plate, and would produce a large fault rotary kiln. Pads and the wheel with the inside of the two surfaces under high temperature and pressure in the round, Common oil or grease can not play sustained effect only good lubricating protective film in order to maintain the normal rolling position, with good high temperature stability grease , will not leave harmful waste products. Convex surface can be maintained for a long minimal friction surface, to get a stable and lasting results. The above article by Henan YuFeng Heavy Machinery (http://www.yufchina.com) finishing release, reproduced, please indicate the source!