In the application of gravity roller conveyor, the use of open steel cover can avoid increasing the friction of the bearing. Although the service temperature of the bearing can be as high as 170 ° C, the service temperature of the steel shielded bearing should exceed 100 ° C because the shield will deform. Special lubrication problems have to be considered when the temperature is outside the range of 0 ° C to 65 ° C. In higher temperature applications, the load spacing of the conveyor belt should be increased the belt should be moved quickly to reduce the heat absorption of the drum. there's a roller radiator. The load capacity of the roller is determined by the load capacity of the bearing the width of the roller. The basic bearing capacity is determined by empirical formula experimental test. It is graded by narrow conveyors. If the width is increased, the load capacity of the roller will decrease due to the deformation of the shaft. The load capacity of gravity roller conveyor is closely related to the selected components. According to the electric roller, it depends on the combination of frame bracket. Due to different machining shapes, there are three assembly methods: direct pressure, crimping molding. The wheel component on the frame track can be higher lower than the frame, depending on the requirements of the application. For example, the roll is below the frame track. Skeleton rails can be used as guides; however, if a wider load is used, it cannot be used because the load will dry. For overloading. In general, both sides of the conveyor are made of the same steel welded by support beams. However, for some applications with specific requirements, the types on both sides of the framework are different. Equipped with more rollers, it has better conveying performance bearing capacity, better tracking performance when turning.