Advantages of External Rotation Design

• Better heat dissipation performance
• Stable operation at high speed
• Reduced thermal accumulation
• Suitable for continuous slipping applications
• Improved cooling efficiency
• Compact installation structure
• Reliable torque transmission

Key Advantages
• Enhanced Cooling Efficiency: The external rotation design promotes natural air convection, significantly reducing heat buildup during continuous slip.
• High-Speed Stability: Engineered for precision tension control in high-speed rewinding and unwinding applications.
• XW® Signature Quality: Utilizing high-purity magnetic powder for smooth torque transitions and minimal wear.

How to Choose an External Rotation Magnetic Powder Clutch

• Required torque
• Machine speed
• Cooling requirements
• Continuous slipping conditions
• Shaft installation structure
• Material type
• Web tension range

Selection Guide

From the compact XW-OP-006 (6Nm) for light film tension to the heavy-duty XW-OP-400 (400Nm) for large-scale paper processing, our series ensures zero-clutter integration into your existing production line.

Typical Applications

• Slitting machines
• Rewinding machines
• Printing machinery
• Film converting equipment
• Flexible packaging machines
• Paper processing systems
• Wire and cable winding
• Coating and laminating machines

Key Features

• External rotating structure
• Precise torque control
• Stable web tension control
• Fast electromagnetic response
• Smooth continuous slipping
• Long service life
• Low vibration and low noise
• Suitable for continuous industrial operation

Technical Specifications

How Does an External Rotation Magnetic Powder Clutch Work?

• Magnetic powder becomes magnetized under excitation current
• Torque changes proportionally with current
• Outer rotating structure improves heat dissipation
• Stable tension maintained during winding and unwinding

For complete web tension control systems, explore our magnetic powder brakes and tension controllers.

• magnetic powder brake
• hollow shaft magnetic powder clutch
• tension controller
• air shaft
• differential friction shaft
• EPC web guide system

Why Choose XW Machinery

• Factory direct supply
• OEM customization
• Stable industrial quality
• Fast technical support
• Export experience
• Worldwide shipping

Our factory has passed ISO9001 quality certification, ensuring quality assurance.

FAQ

What is an external rotation magnetic powder clutch?

An external rotation magnetic powder clutch is a torque control device in which the outer housing rotates during operation. It uses magnetic powder and electromagnetic force to transmit adjustable torque between the driving and driven shafts. This design is widely used in slitting, rewinding, printing, coating, and web handling machines that require stable tension control and continuous slipping performance.

How does a magnetic powder clutch work?

A magnetic powder clutch works by magnetizing internal magnetic powder through an excitation coil. When DC current is applied, the magnetic powder forms magnetic chains that connect the input and output components, allowing torque transmission. The transmitted torque changes proportionally with the excitation current, enabling precise torque and web tension control during winding and unwinding operations.

What are the advantages of external rotation design?

External rotation magnetic powder clutches offer several advantages:

• Better heat dissipation performance
• Stable operation at high speeds
• Reduced heat accumulation during continuous slipping
• Improved cooling efficiency
• Smooth and stable torque transmission
• Suitable for heavy-duty industrial applications
• Compact and reliable machine integration

The external rotating structure is especially suitable for long-term continuous tension control systems.

How do I choose the correct torque?

To choose the correct magnetic powder clutch torque, consider:

• Material width and thickness
• Required web tension
• Roll diameter
• Machine operating speed
• Continuous or intermittent operation
• Cooling conditions
• Safety margin requirements

Selecting the correct torque helps maintain stable tension, improve product quality, and extend equipment life. XW Machinery can recommend suitable models based on your application requirements.

Can it be used for slitting machines?

Yes. External rotation magnetic powder clutches are widely used in slitting machines for precise unwinding and rewinding tension control. They help maintain stable web tension, reduce wrinkles, improve roll quality, and support high-speed continuous operation.

What materials are processed?

External rotation magnetic powder clutches are suitable for processing many web materials, including:

• Plastic film
• Paper
• Aluminum foil
• Copper foil
• Nonwoven fabric
• Labels and adhesive tape
• Flexible packaging materials
• Wire and cable

They are commonly used in printing, laminating, coating, converting, and packaging industries.

Does XW Machinery support OEM customization?

Yes. XW Machinery supports OEM and custom manufacturing services for external rotation magnetic powder clutches, including customized torque ranges, shaft structures, mounting dimensions, voltage specifications, and machine-specific configurations. Technical support is available to help match different industrial applications.