One of the components of quarry crusher is rolling bearing, main reasons of rolling bearing vibration is due to rolling bearing rotates, the load bearing, deformation and vibration. The main vibration, bearing cage, rolling body vibrati...

 
Causes and mechanism of sand instead of natural sand in two aspects, one, a lot of exploitation of natural sand caused the damage to the ecological environment is to make up a missed lesson up; second, the existing natural sand can not ...