Roll crusher is also named double-roll crusher,roll-type crusher.It is usually used to crush raw materials such as coal, coal gangue, coke , limestone, sulfur ore, phosphate rock and etc, which are usually crushed in middle or fine size by the way of roll extrusion .Roll crusher is widely used in the fields of ore dressing, chemical, cement, refractories, grinding materials, building materials, etc., and it has more excellent performance than the general machinery in crushing of building materials, particularly in crushing materials like gangue stone and mung bean stone.

1. Roll crusher mainly consists of rollers, roller support bearings, pressed and regulation devices, drives, and etc.
2. Adjusting of output granularity: there is a wedge or gasket adjusting device between the two rollers. Wedge adjusting device:there is a adjusting bolt on the top of the Wedge device. When the wedge is pulled up by adjusting bolt, the wedge pushes the movable roller away from the fixed roller. That is to say, when the gap of the two rollers becomes wide, output granularity shall become larger accordingly. When the wedge falls down, the gap of the two rollers becomes small under pressure of the spring, output granularity becomes small. Gasket adjusting devices: it is used to adjust output granularity by means of increasing or decreasing numbers or thickness of the gasket. When adding gaskets, the gap of the two rollers becomes wide,and output granularity becomes large, when decreasing gasket, gap of the two rollers becomes small, and output shall be fine accordingly.
3. There are two motors which drive the rollers by V-belt. Both rollers rotate in opposite direction.
4. When materials are being crushed, the feed material are in put from the inlet and crushed by the rollers, and finally the crushed products are out put from the chassis below .
5. For security, transmission security cover should be installed according to the actual situation.

1. Long service life, no easy to damage
2. Compact structure,light weight and small size
3. Simple structure, small footprint, easy to operation and maintenance
4. Reasonable structure low running cost, smooth operation, energy-efficient, high crushing efficiency
5. Dust board installed inside,good sealing performance, avoid splashing of crushed fine material
6. The particle size is adjustable, after tune of the roll gap, the broken particle size can be reliably controlled according, and all the granularity will be discharge in the ideal size.