Rotary drum cutter is a mechanical device equipped with rotating drums embedded with cutting tools. These cutting tools, often made from high-grade steel or carbide, are strategically positioned along the drum’s circumference. As the drum rotates at high speeds, the cutting tools engage with the material surface, breaking it down into smaller particles or creating precise cuts. Excavator drum cutters utilize a combination of rotational motion and abrasive action to achieve controlled material removal. It is widely used in construction, mining, tunneling, demolition, and various forms of material processing. With the growing demand for versatile excavation attachments, this tool has evolved to provide superior cutting power while maintaining safety and operational stability.
Rotary Drum Cutter Specifications
| Product Model | HX-X1 | HX-X2 | HX-Z1 | HX-Z2 | HX-D |
| Applicable Models | 6-9T | 10-18T | 20-27T | 30-40T | 45-60T |
| Machine Weight | 450kg | 550kg | 1100kg | 1250kg | 2450kg |
| Milling Width | 420mm | 650mm | 850mm | 950mm | 1150mm |
| Milling Head Diameter | 340mm | 450mm | 560mm | 660mm | 850mm |
| Number of Blade Heads | 40 | 56 | 64 | 64 | 60 |
| Recommended Speed | 95r/min | 85r/min | 78r/min | 75r/min | 55r/min |
| Recommended Flow Rate | 80L/min | 120L/min | 220L/min | 320L/min | 360L/min |
| Maximum Pressure | 35Mpa | 35Mpa | 35Mpa | 35Mpa | 35Mpa |
| Maximum Torque | 4700NM | 7000NM | 14300NM | 23300NM | 40300NM |
Rotary Drum Cutter Structural Composition
- The hydraulic motor: The heart of the machine is a high-torque hydraulic motor. This component converts the hydraulic flow and pressure from the carrier (the excavator) into rotational mechanical energy.
- The gearbox: Connecting the motor to the cutting heads is a robust gearbox. This mechanism is responsible for reducing the high speed of the hydraulic motor to a lower, more potent speed suitable for rock cutting, effectively multiplying the torque.
- The cutter drums: These are the cylindrical bodies that rotate. They are typically designed in a transverse orientation, though axial versions exist for specialized trenching. The drums must be balanced perfectly to prevent destructive vibrations that could damage the excavator arm.
- The picks: Dotted along the drums are the picks. These are replaceable wear parts, usually tipped with tungsten carbide. The arrangement of these picks is not random; it follows a specific lacing pattern, often a spiral, to ensure that every rotation removes material efficiently and clears debris away from the cut.
Working Principle of Excavator Drum Cutter
The working principle of a rotary drum cutter revolves around rotational force and abrasive action. When activated, the motor drives the cutting drum at a predetermined speed. As the drum spins, the cutting tools press against the material surface with significant force. The combination of rotational energy and tool hardness enables the machine to chip away at the material gradually. Unlike impact-based tools that rely on sudden blows, drum cutter attachment apply continuous pressure, resulting in smoother cuts and reduced material wastage. The efficiency of this process depends on several factors, including drum speed, tool sharpness, and material properties. For instance, harder materials like granite require slower speeds and sharper tools to avoid excessive wear. Conversely, softer materials such as soil or clay can be processed at higher speeds without compromising tool life. Proper calibration of these parameters ensures optimal performance and prolongs equipment lifespan.
Advantages of Using Excavator Drum Cutter Attachments
- Low vibration operation that minimises structural impact and enhances operator comfort.
- Reduced noise levels compared to breakers or blasting methods.
- Uniform and smooth cutting surfaces that reduce the need for secondary processing.
- Improved precision, making them ideal for controlled demolition.
- Lower dust generation, especially when paired with water spray systems.
- Cost effectiveness through faster completion times and decreased wear on carrier machines
How to Select the Right Drum Cutter Attachment for Excavator?
- Carrier compatibility
Ensure that the rotary drum cutter matches the hydraulic flow and power of the excavator. - Type of material
Determine whether the primary material is rock, concrete, asphalt, shale, or something else. - Cutting depth and width requirements
Different cutters offer different drum sizes and penetration capabilities. - Project environment
Urban or vibration-sensitive sites require models with noise and vibration mitigation features. - Desired production rate
Higher output projects may need larger or more powerful drum cutters.
Rotary Drum Cutter for Sale in YG
If your project demands precision, power, and unparalleled performance in rock, concrete, or trenching, our range of excavator drum cutter models is specifically engineered to meet those challenges head-on. The design of our rotary drum cutter allows for smooth, continuous cutting while reducing noise and vibration, keeping your project both efficient and environmentally friendly. Every drum cutter attachment for an excavator undergoes strict quality testing to guarantee long service life and dependable operation. Get in touch with us for more details.