Double Roller Crusher
What Is a Double Roller Crusher？
Double Roller Crusher is used for medium and fine crushing of medium-hard materials. It crushes materials through two counter-rotating rollers that apply compression and shearing forces. With a simple structure and reliable operation, it is applied in industries such as mining, metallurgy, and building materials. Our model supports customization to adapt to different production layouts and material characteristics.
How Does a Double Roller Crusher Work?
The core of the equipment lies in two rollers that rotate toward each other. Material enters the crushing chamber from the top and is drawn between the two rollers under the combined effect of roller surface friction and gravity. As the rollers rotate, the material is subjected to compression and shearing forces. When these stresses exceed the material's own strength limit, it is broken into smaller particles and finally discharged from the bottom between the two rollers. The structure consists of roller wheels, bearings, adjustment devices, and drive units.
The Key Advantages of the Double Roller Crusher
Our Double Roller Crusher offers practical value in three aspects: crushing performance, equipment safety, and routine maintenance.
Crushing performance: The product provides uniform particle size with minimal over-crushing. The discharge size can be adjusted through the adjustment device to meet the requirements of different production stages.
Equipment safety: The crusher is equipped with spring or hydraulic overload protection devices. When unbreakable foreign objects enter the crushing chamber, the movable roller can retreat to increase the gap, allowing the objects to pass through safely and then automatically reset, thus protecting core components from damage.
Routine maintenance: The equipment features a compact design that occupies minimal space, and its operation and upkeep are relatively straightforward. The roller shells are made of wear-resistant materials and can be replaced, which helps extend service life and control operating costs.
How to Choose the Right Double Roller Crusher?
The following points summarize the key factors for selection. Based on the hardness of the material to be crushed, the target output, and the discharge particle size requirements, the following directions can be referenced to choose the right model.
Material hardness: For materials with higher hardness, such as iron ore and quartz stone, it is recommended to choose versions with reinforced roller surfaces. For medium-hard materials such as limestone and coal gangue, the standard configuration meets the requirements.
Output scale: Determine the specification of the crusher based on the total amount to be processed per hour. Smaller production lines can choose models with smaller roller diameters, while larger projects require equipment with larger roller diameters to ensure processing capacity.
Discharge particle size: Clarify the required particle size range for the final product. Our Double Roller Crusher can cover different discharge requirements by adjusting the gap between the rollers. You can inform us of your target particle size during selection, and our technical team will recommend the appropriate model.
Double Roller Crusher Technical Parameters
The following table lists the technical parameters of some common models of the product for your reference. Selection can be customized according to your material characteristics and output requirements. For the convenience of selection, the table has been supplemented with equipment weight information.
| Model | Roller Dia.(mm) | Roller Len.(mm) | Max Feed(mm) | Output(mm) | Capacity(t/h) | Power(kw) | Weight(t) |
|---|---|---|---|---|---|---|---|
| 2PG-400×250 | 400 | 250 | ≤25 | 1-8 | 5-10 | 2×5.5 | 1.5 |
| 2PG-610×400 | 610 | 400 | ≤40 | 1-20 | 13-35 | 2×15 | 3.5 |
| 2PG-750×500 | 750 | 500 | ≤40 | 2-20 | 15-40 | 2×18.5 | 5.2 |
| 2PG-800×600 | 800 | 600 | ≤40 | 3-20 | 20-50 | 2×22 | 6.8 |
| 2PG-1000×700 | 1000 | 700 | ≤100 | 3-30 | 20-65 | 2×30 | 9.5 |
| 2PG-1200×800 | 1200 | 800 | ≤120 | 3-35 | 35-80 | 2×37 | 13.0 |
Where Can a Double Roller Crusher Be Used?
With its material adaptability, this equipment plays a role in three fields: mining, building materials and chemicals, and coal processing.
Mining and metallurgy: Used for crushing iron ore, quartz stone, coal gangue, etc., as a link in the mineral processing and smelting process.
Building materials and chemicals: Suitable for fine crushing of limestone, clinker, shale and other raw materials, providing raw materials for the production of cement, refractory materials and chemical products.
Coal industry: Suitable for crushing raw coal, and its uniform discharge size helps simplify the coal preparation process.
Frequently Asked Questions About Double Roller Crusher
Q: How to adjust the discharge particle size of the equipment?
A: It can be achieved by adjusting the gap between the two rollers. Our crusher is equipped with shim or wedge adjustment devices. By increasing or decreasing the number of shims or adjusting the position of the wedge blocks, the discharge size can be changed to suit different production requirements.
Q: Does a high moisture content in the material affect the performance of the Double Roller Crusher?
A: For materials containing moisture, our design includes corresponding countermeasures. For example, some versions can be equipped with scraper devices or special roller surface designs to reduce material adhesion to the roller surfaces, ensuring smooth crushing.
Q: How to choose the roller shell material for the Double Roller Crusher based on different material hardness levels?
A: For medium-hard materials such as limestone and coal, standard high-manganese steel roller shells meet the requirements. For materials with higher hardness or strong abrasiveness such as iron ore and quartz stone, we recommend choosing shells with embedded cemented carbide or surfacing wear-resistant layers. These materials can extend the service life of the roller shells. Providing material samples or hardness indicators during selection allows our technical team to give specific recommendations.
Q: How to repair the roller shell of the crusher after wear?
A: After the roller shell wears to a certain degree, it can be repaired by surfacing welding to restore the original dimensions and wear-resistant layer of the roller surface. The repair cycle depends on the abrasiveness of the material and the intensity of use. Our technical team can provide estimated repair cycles and operational recommendations based on your working conditions.
