Double Roll Crusher: Efficient and Reliable Crushing
Equipment
The Double Roll Crusher is a commonly used crushing device, widely applied in industries such as metallurgy, building materials, and refractory materials. It is mainly used for crushing medium and high hardness materials. With its simple working principle, compact structure, and high production efficiency, it has become the equipment of choice for many production lines.

1. Structure and Components of the Double Roll Crusher
The basic structure of a Double Roll Crusher consists of the following main parts:
- Rollers: The core component of the crusher, typically made from high-strength, wear-resistant materials, offering strong durability and compressive strength.
- Roller Bearing Supports: Support the rotation of the rollers and ensure smooth operation.
- Compression and Adjustment Devices: Primarily used to adjust the gap between the rollers, thus controlling the granularity of the crushed material. Common adjustment devices include wedge and spacer adjustment mechanisms.
- Drive Mechanism: Provides power to the crusher, usually through an electric motor that drives the gear mechanism to rotate the rollers.

2. Working Principle
The working principle of the Double Roll Crusher is quite simple. Material is fed into the crushing chamber through the feed opening and is crushed by the compression between the two rollers. The crushed material then naturally falls out. To protect the equipment from damage caused by overly hard or uncrushable materials, the crusher is equipped with a hydraulic or spring protection mechanism. When hard materials are encountered, the rollers automatically retreat, increasing the gap between them, allowing the hard material to fall off and preventing damage to the machine.
The rollers of the Double Roll Crusher rotate in opposite directions, and there is a gap between them. By adjusting this gap, the maximum discharge size of the product can be controlled. Thus, users can adjust the crushing granularity to meet the needs of different materials.
3. Advantages and Applications of the Double Roll Crusher
- High Efficiency and Energy Saving: The counter-rotating roller design effectively improves crushing efficiency and reduces energy consumption.
- Adjustable Granularity: By adjusting the gap between the rollers, users can precisely control the granularity of the crushed material to meet various needs.
- Simple Structure: The simple design of the Double Roll Crusher makes it easy to operate and maintain, with a small footprint, making it suitable for various industrial environments.
- Automatic Protection Mechanism: The crusher is equipped with an automatic retreat function to protect the equipment from damage when encountering hard materials, thus extending its service life.
- Strong Adaptability: It can handle a variety of materials, especially medium and high-hardness materials.

Applications:
The Double Roll Crusher is widely used in industries such as metallurgy, building materials, and refractory materials. It has shown excellent performance in crushing minerals such as limestone, coal, iron ore, and bauxite.
4. Common Faults and Solutions
- Excessive Roller Wear: Regularly inspect the rollers and replace or repair them if significant wear is found.
- Unstable Discharge Granularity: If the discharge granularity is unstable, the gap between the rollers may not be properly adjusted, requiring recalibration.
- Excessive Vibration: Check the roller bearings and drive mechanism to ensure smooth operation and eliminate imbalance factors.
- Jamming Due to Hard Materials: When encountering hard materials, ensure that the hydraulic or spring protection mechanism functions properly to prevent damage.

5. FAQ:
1. What types of materials are suitable for the Double Roll Crusher?
The Double Roll Crusher is suitable for medium and high-hardness materials, commonly used for crushing limestone, coal, iron ore, and other minerals. It is widely used in industries such as metallurgy, building materials, and chemicals.
2. How to adjust the discharge granularity of the Double Roll Crusher?
The discharge granularity of the Double Roll Crusher can be controlled by adjusting the gap between the rollers. The equipment is typically equipped with wedge or spacer adjustment mechanisms, where adjusting bolts can change the gap size and control the discharge granularity.
3. What maintenance and care are required for the Double Roll Crusher?
Regularly inspect key components such as rollers, bearings, and drive mechanisms for wear, and clean debris from the crushing chamber to maintain the equipment in good working condition. Also, check the adjustment and hydraulic systems periodically to ensure efficient operation.
4. How does the protection mechanism of the Double Roll Crusher work?
When the equipment encounters hard or uncrushable materials, the rollers can automatically retreat, increasing the gap between them through hydraulic or spring action. The hard material then falls off, protecting the machine from damage.
5. Is the Double Roll Crusher suitable for large-scale production?
Yes, with its high crushing capacity and stable operation, the Double Roll Crusher is widely used for large-scale production of various minerals, especially for continuous crushing of medium and high-hardness materials.

6. Kontak ons
If you are interested in our Double Roll Crusher or other equipment, or if you have any questions, please feel free to contact us. Our sales team will provide detailed product information and technical support.
Best regards,
Bin Ni
Sales Manager
Shandong Hengtai Heavy Industry Co., LTD.
Tel: +86 18288664797
E -pos: [email protected]
Website: https://slminingmachinery.com/#
Toespraak: Linyi, Shandong, China
We look forward to working with you to provide high-quality equipment and services for your production needs!