] [How to choose environmentally friendly roller Beijing factory - Xintai shelf works roller drive roller tube body, bearing and bearing outer ring by friction between the belt and rollers, seals rotary motion , and the conveyor belt and to achieve together with its transport logistics. Factors 1. roller radial runout (the indicators directly affect the stability of the material transport) 2. Axial string momentum (directly affect the life of idler) 3. flexibility (impact idler life and Tapes of life, as well as the whole driving power) 4. Waterproof (impact idler life) 5 dustproof performance (impact idler life) 6. The axial load carrying capacity (impact idler life) 7. Anti- shocks (affecting idler life) 8. rotational resistance (affects tape life). Maintenance 1. roller normal life 20000h above, generally do not need maintenance. But use the site and load size, should develop appropriate maintenance date, time cleaning oiling maintenance, clean the float coal. For abnormal sounds and do not turn the roller should be replaced. 2. Replace the bearings, bearing cage must open outward, into the roller bearing, should maintain proper clearance can not be crushed. 3. The labyrinth seals should be used original parts, the assembly should be loaded into the roller respectively, may not cover the assembly together. 4. Use the roller, it should prevent heavy blow hit the roller tube. 5. In order to ensure sealing roller impact and performance, is prohibited disassemble the roller.