The double-roller crusher—also known as a double-roller sand-making machine—is a piece of mining machinery that utilizes two counter-rotating rollers to crush materials. Subjected to the immense compressive force generated between the two rollers, the material is crushed into a mixture of powder and granules. The machine features a simple structure, a compact footprint, high output, and low energy consumption.
Suitable for the cement, chemical, electric power, building materials, refractory materials, and other industrial sectors for the medium and fine crushing of medium-hardness materials—such as limestone, slag, coke, and coal.
Material enters through the feed inlet and falls between the two rollers, where it undergoes compressive crushing; the finished product then falls away naturally. In the event that excessively hard or non-crushable objects are encountered, the rollers automatically retract—actuated by hydraulic cylinders or springs—to widen the gap between them. This allows the hard or non-crushable objects to pass through, thereby protecting the machine from damage. The two counter-rotating rollers maintain a specific gap; by adjusting this gap, the discharge particle size of the final product can be precisely controlled.
By utilizing one or more pairs of counter-rotating toothed rollers, the machine subjects materials to a combination of extrusion, splitting, and shearing forces. This results in high crushing efficiency, enabling the rapid reduction of large blocks of material to the desired particle size.
The system yields a high percentage of finished product with a fine output granularity. The resulting particles are predominantly cubical in shape, characterized by a low content of needle-like and flaky particles, and are free from internal micro-cracks.
Incorporating intelligent control technology, the machine enables automated operation. It features low operating noise levels and excellent sealing capabilities; furthermore, it is equipped with a dust removal system to effectively eliminate dust pollution.
The machine utilizes heavy-duty, thickened roller shells constructed from novel materials that offer exceptional resistance to both abrasion and impact. This robust construction, combined with an automated lubrication system, significantly extends the service life of the individual components.
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| 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) | 3-10 | 5-20 | 10-30 | 15-40 | 20-50 | 25-70 | 30-110 |
| 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 |
| Roller diameter (mm) |
Input Size (mm) |
Processing capacity(t/h) |
| Ф400 | ≤25 | 3-10 |
| Ф600 | ≤25 | 5-20 |
| Ф700 | ≤25 | 10-30 |
| Ф800 | ≤25 | 15-40 |
| Ф1000 | ≤30 | 20-50 |
| Ф1200 | ≤30 | 25-70 |
| Ф1500 | ≤30 | 30-110 |