Product characteristic: the use of liquid oil lubrication in the outer tank. All parts are made of high quality alloy steel forging, surface hardness after positive fire, modulation to high hardness HRC48 - 55, so its wear resistance is good. A group of chain shafts and reducer are connected by rigid slotted keys, using spherical roller bearings or heavy duty double row tapered roller bearings for the choice of imported or well-known domestic brands. The chain wheel uses high-quality alloy steel for forging workpiece, CNC machining for forming, scraping chain and chain wheel fastening is more reliable. Using short tooth arc design, the surface of the chain socket is hardened with intermediate frequency CNC, hardness HRC48 - 55, depth 10 - 15mm. Equipped with protective axle plate, distribution device, connecting sleeve for disk mounting and other accessories.