The main bearing of the Ore Dressing Ball Mill with the shell diameter *******0mm is spherical liner bearing; For the shell diameter ***0mm, the main bearing is completely closed self-aligning **0° Bearing with strong alloy of high lead and low in with low hardness, underneath laid with cooling copper piping full of water The bearing is of static pressure structure with high and low pressure united oil lubricating system. 

Working principle of Ore Dressing Ball Mill: The Ore Dressing Ball Mill has a horizontal type and tubular running device, and two warehouse. This machine is grind type and its outside runs along gear, the material enters spirally and evenly the first warehouse of the milling along the material hollow axle by material device, in this warehouse, these is a ladder scaleboard or ripple scale board, and different specification steel balls are installed on the scaleboard, when the barrel body rotates and then products centrifugal force, at this time, the steel ball is carried to some height and falls to grind and strike the materials, after being grinded coarsely in the first warehouse, the material then enters into the second are house for regrinding with the steel ball and scaleboard, in the end, the power is discharged by output material board and the end products are completed.