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Home > Stone crushing machine > Double roller crusher
Double roller crushers can break high-hardness materials, which have a good crushing effect to the hard material.
Fine discharging, it is best to make crushing for the pebble.
The price of double roller crusher is low and quick-wear parts (rollers) are more durable.
Chat LineGet a QuoteThis improved roll crusher with mightiness and high efficiency is developed out by our senior mining research worker through improving the roll pressure, roll rotation and materials.
Double roller crushers have the following features, smooth operation and big reduction ratio.
They are applicable for crushing middle-hard and extra-hard rocks, granite, pebble, carborundum, silicon carbide, high-alumina clinker, etc. At the present, it is the ideal sand making machine.
The roll crusher is driven by the driving chain of speed reducer. It is mainly composed of fixed roller, movable roller, machine frame, shield, protecting guard. The machine power comes out of motor v-belt, which makes the two rollers rotate through the speed reducer chain, with the result of crushed materials.
1. Fixed roller and movable roller
The roller is the main parts for crushing materials. It consists of shaft, cranked axle, taper pan, roll milling, chain wheel, bearing, bearing end closure and rolling contact bearing, etc.
There is spine for connecting the two naves on the shaft of fixed and movable roller. The wheel is put on the cave, one shaft end on the wheel chain. There is unstrained tapered roller bearing on both side of roll milling.
Another crushing part is roll milling. On the surface there are mirror model and slot model determined by the actual condition. Due to its direct contact with materials, it is the easily damaged parts. After the heating treatment, the roll milling with ZG50Mn2 materials has the advantages of firmness, durability and easy to dismantle.
When the material that can not be crushed goes to the machine chamber, the roller can move outside by spring’s function and make the space bigger between the rollers to avoid destroying the machine.
2. Movable device
There is movable device on the movable roller. During the machine operation, if the hard to crushed materials or metal which cannot go through the two rollers drop into the machine, it is necessary to put the movable device for the machine safety.
3. Machine body
The machine body is welded by angle iron and steel plate. The body is fixed on the under frame. It makes the working surface of two rollers become closed shape so as to prevent the materials drop out of the machine.
4. The cover connecting with the wheel
The long cover connecting with the wheel is welded by the steel plate and angle steel. It is fixed on the chassis by screws.
5. The main structure of chain transmitting device include： under frame, fixed roller, wheel cover, supporting bearing and adjusting device etc. Two roller covers are fixed the two rotating shafts by flat keys. At the two sides of the shaft, there are two bearings supported and equipped in the machine.
The big size material drops evenly into the clearance between two rollers. At the impact of two rollers’ contrary rotation, the materials are extruded and crushed to the desirable size.
| Model | 2PG0425 | 2PG0640 | 2PG0740 | 2PG0850 | 2PG1060 | 2PG1260 | 2PG1560 |
| Roller diameter(mm) | Ф400 | Ф600 | Ф700 | Ф800 | Ф1000 | Ф1200 | Ф1500 |
| Roller width(mm) | 250 | 400 | 400 | 500 | 600 | 600 | 600 |
| Input Size(mm) | ≤25 | ≤25 | ≤25 | ≤25 | ≤30 | ≤30 | ≤30 |
| Discharging Gate(mm) | 2-8 | 2-8 | 2-8 | 2-8 | 2-10 | 2-10 | 2-10 |
| Processing capacity(t/h) | 5-10 | 10-20 | 15-30 | 20-40 | 30-50 | 40-70 | 60-110 |
| Power Models | Y132M-6 | Y180L-6 | Y200L-4 | Y225M-4 | Y250M-4 | Y315M-6 | Y315L-6 |
| Motor power(kw) | 5.5×2 | 15×2 | 30×2 | 45×2 | 55×2 | 75×2 | 110×2 |
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