Compound roller is widely used in transportation system of wharf, mine, factory, power plant, grain station, etc. compared with ordinary roller, compound roller is easier to play its advantages in conveying acid, alkali, salt, chemical, chemical and other corrosive materials and workplaces with high fire resistance coefficient.

The cylinder and bearing seat of the composite idler are made of high-strength composite materials. The inner wall of the idler has several convex stiffeners along the length direction and several reinforcing rings along the circumference direction. The inner side of the bearing seat by the bearing is a plum shaped structure. The inner and outer circles of the bearing seat are connected by several stiffeners. There are several convex and concave rings on the outer side of the bearing seat. The bearing seat is connected with the roller body There are several concave grooves on the circumference of the mounting contact surface. The utility model is composed of a roller body, a shaft, a bearing seat, a cover, a clamp ring for the shaft, a dust-proof outer cover and a rubber seal. This kind of idler has the advantages of tight structure, strong load-bearing capacity, wear resistance, corrosion resistance and long service life. It can be widely used in port, wharf and belt conveyor of industrial and mining enterprises.