There are several standards for judging the quality of the idler: the radial runout of the idler; the flexibility of the idler; the amount of axial movement
The belt conveyor can maintain stable operation within the range of the jumping amount specified by the country, otherwise it will cause the belt conveyor to resonate and jump, which will cause the material to be discarded and pollute the environment. The higher the belt speed, the smaller the radial runout. benefit. my country's national standard stipulates that the amount is 0.7 mm.
The selection of idlers with low rotation resistance coefficient (less than 0.020) is an important part of the design and selection of belt conveyors. During the operation of the belt conveyor, the flexibility of the roller is very important. If the rollers are not flexible enough and the coefficient of rotation is high, the entire belt conveyor system will have to pay more power and consume more electricity. Sometimes, electricity can cause the tape to tear and burn the motor. In more serious cases, it may cause a fire.
Due to my country's belt manufacturing technology and belt conveyor installation technology, there is still a big gap with other countries in the world, and belt deviations often occur. If the axial movement of the roller is large, the roller will be damaged. Generally, it is best to control the axial movement within 0.5-0.7 mm.