The characteristics of ball mill bearing

The ball mill is made up of feeding part, discharging part, gyre part, transmission part, (decelerator, small transmission gear, generator, electrical control) and so on. The hollow axis adopts the cast steel and the lining can replace , the rotating big gear processes in the way of casting rolling gear. The barrel body is wearable well and bears wearable scale board. This machine run steadily and works reliably.

Ball mill, an efficient tool for grinding many materials into fine powder is used to grind many kinds of mine and other materials, or to select the mine. It is widely used in building material, chemical industry, etc. There are two ways of grinding: the dry process and the wet process. It can be divided into tabular type and flowing type according to different forms of discharging material.

Cylinder: The cylinder of ball mill is welded by several steel plates of 12-15mm thickness. Both ends of the cylinder are welded by flange plates so that the feed end cap and the discharge end cap of the cast steel can be connected to. There is replaceable lining plate in the cylinder. To keep the close contact of lining plate and cylinder inner wall and buffer the steel ball’s impact to the cylinder, there is plywood between the lining plate and the cylinder inner wall. For convenience, there is manhole on the cylinder, mostly is rectangle with length of 350~550mm, to replace lining plate and check the cylinder interior condition.

Main bearing: The hollow shaft neck of ball mill rests on the main self-alignment nucleus sliding bearing. The main bearing consists of bottom chuck, bearing cap, bottom bearing shell with Babbitt metal casted on surface, cylinder dowel and seal joint. The bearing block and bearing cap are made into spherical surface to make up for the installation error. There is cylinder dowel in the sphere center of the foundation and bearing bush which can protect the bearing bush rolling out of the bearing block. The oil in pipe infuses to the axis neck fan shaped by oil nozzle to lubricate the bearing, and then flows back to the oil tank by oil discharge pipe.

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