What are the requirements for coal mines for various material rollers?
1. The pollution of the roller bearing by the water spray and the slime causes the bearing resistance to increase until the stagnant water and the sulfur and acid in the water corrode the pipe body. The time when the 4.5 mm thick pipe wall is corroded is usually about one year, and it is particularly severe as long as it is corroded for 5 months.
2. The conflicting centering roller of the self-aligning bracket device is not straight with the tape at 90 degrees, but uses the lateral conflict force to force the tape to be deflected. The wall of the roller will wear very quickly, and the wear of the tape is also very serious. . The roller tube wall of the device on the forward tilting bracket is relatively worn.
3. the tapered self-aligning roller, the pipe wall is also simply worn through the buffer roller life of about 3 months. Therefore, the roller used in the coal mine is not only required to be sealed, the bearing can work under excellent smooth conditions for a long time, and the wall of the roller needs to be wear-resistant and corrosion-resistant, and the ambition can be obtained.