Roller installation: roller installed before buying mine roller, you should check whether the model meets the requirements specification mine roller, for damage and other phenomena conveyor. After installing mine rollers price, should be flexible rotation. Requirements roller roller installation (self-aligning roller and transitional care mix except) on the surface in the same plane (horizontal or inclined), or in a common radius of the arc (conveyor concave and convex arcs roller). Roller Application: roller for a coal mine and the open air, coal preparation, etc. used in carrying on a belt conveyor idlers, return idlers and buffer roller. The main purpose is to support and drive belt, reducing the running resistance, and sag of the belt does not exceed certain limits in order to ensure the smooth operation of the conveyor belt.