The main shaft device of the equipment is composed of two bearing blocks of the main shaft of the drum, etc. see the drawing for the lining plate installed on the drum to wind or release the steel wire rope. The two ends of the main shaft adopt the adjustable center double row rolling bearing with high efficiency for disassembly and maintenance. So far, all the rotating parts of this series of mine hoisting winches have realized the full roll transmission, so the whole machine efficiency is above energy-saving mine hoisting winches