1) Parallel upper roller: parallel lower roller: applicable scope port transport terminal, mine transport, mechanical equipment

2) Parallel upward core roller. Parallel down core roller: Scope of application to avoid belt deviation comb roller: mine, wharf, coal, power plant, coking, export trade.

1. Roller normal service life of more than 20000h, usually do not need to repair. However, according to the size of the application site and the load, the corresponding repair date should be formulated, the oil injection repair should be cleaned in time, and the floating coal should be sorted out in time. Rollers with abnormal movement and non-rotation should be replaced in time.

2. When replacing the bearing, it is necessary to make the bearing holder open outwards. After the bearing is loaded into the roller, it should adhere to the appropriate clearance and should not be crushed.

3. Labyrinth seals should be selected from the original parts, and should not be separated from the roller during installation, and should not be installed together.

4. When using the roller, beware of heavy objects hitting the roller tube body.

5. In order to ensure the sealing performance and operation performance of the roller, it is strictly prohibited to disassemble the roller at will.