Roller Type Standard: roller in steel and plastic material is divided into two roller. Bearing roller has three iron and steel stamping, and Bakelite like. Roller accounted for a total cost of 35% of the belt conveyor, resulting in a more than 70% of the resistance of polyethylene roller wholesale coal mine, so the quality of the roller is particularly important. Roller: roller has a light weight, easy to manufacture, low cost coal mines polyethylene roller manufacturer, roller rotation resistance made of polyethylene roller small coal supplier, can effectively reduce the power consumption of the conveyor. Roller aging resistant lithium grease, not only play a good lubrication, but also with the seals, enhance sealing effect.