The main coupling gear grease lubrication condition
Coupling with double toothed, single head tooth, tooth embedding type, spring type, disc spring, cross sliding type and other types of roller chain. Because of the different types, some with lubricants, some grease. Steel rolling mill main shaft coupling is a cross sliding type universal coupling, the coupling is an indispensable component of steel rolling equipment, work under extremely harsh. Coupling copper slide block of semi-circular in severe shock load and great work under pressure ( connecting rod deflection angle is often greater than 120 ), therefore, slide plane and arc surface can produce severe wear. In addition, the coupling is also affected by dust, moisture and temperature of iron scale, the invasion. Obviously, in such harsh working conditions, to maintain good lubrication is very important. The mill main shaft coupling slider grease, mainly has the extreme pressure lithium base grease ( including semifluid grease ), graphite calcium base grease and grease for calender. There are special requirements, should be fitted with special grease. In a tandem rolling mill main shaft coupling, generally using the slide and the gear type, in the lubrication are common, the use of lithium base grease or. MOS, as the main body of the antifriction agent, can reduce friction effect. At the same time, in order to improve the coupling grease adhesion, pressing sex, Timken test OK value, reduce friction powder content, and improve operation and prolong the service life of gear, can also use special calcium base grease.