Technical characteristics:

- capacity max.  -  up to 500 kg/h
- roll diameter  -  Ø400 mm 
- roll length  - 250 mm
- max. size of the fed matter  - up to 8 mm 
- gap adjustment range  - 1 to 5 mm 
- roller speed  - 170 rpm.
- crusher drive power  - 2X5,5 kW 
- weight  - 1400 kg 

- external dimensions:

- length ~ 1713 mm 
- width ~1121 mm 
- height ~ 874 mm 

TECHNICAL DESCRIPTION:

General description of the structure:

The basic elements of the crusher are the body, fixed and sliding rollers and the roll housing. The shafts are mounted on spherical roller bearings in housings and secured with snap rings, covers and labyrinth rings. The bearing housings of the fixed and sliding shafts are set on the body. The shafts are driven by two geared motors which rotate the shafts with rollers in opposite directions and are bolted to the bearing housing with a labyrinth-reaction ring. Rollers with shafts and geared motors are protected against overload by a spring system (cup springs).

A description of the action:

The raw material passes between the rolls through the casing inlet. The crusher has the option adjusting the gap between the rollers in the range of 1 to 5 mm by means of a package of sub-chocks regulatory. To adjust the gap, the bearing holders should be moved away with the roller, previously loosening the nuts and inserting an appropriate number of adjustment washers between the beam and the bearing housing. After determining the correct gap, tighten the nuts in order to press the bearing housing against the outer thrust beam. They maybe momentary during crushing overloads caused by much larger materials getting between the crusher rolls hardness than crushed raw material. For this purpose, two packages of disc springs were used. The rebound force of the roller is regulated by setting the appropriate tension of the disc springs by using the appropriate number of washers. The disc spring package consists of 8 pieces and the total length is 60 mm when tensioned. The preload influences the screen crushing. When setting the slot, the crushing sieve does not change and there is no need to adjust the sieve cylinder reflections. The tension of the springs is adjusted by loosening the nuts and screwing them in the bushing, and then determining the thickness of the sub-chocks, and then screwing the bushing into the stop and tightening nuts. 

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