Choosing the Right Air Shaft for Efficient Web Handling: A Comprehensive Guide

    When choosing an air shaft, there are several factors to consider, including the nature of the web material, the requirements of the winding process, and the production environment. Here is an introduction to different types of air shafts, including Leaf-Type Air Shafts, Tork Type Air Shafts, Keyed Air Shafts, and Differential Air Shafts, their structures, primary application scenarios, advantages, and recommendations for different situations:

Leaf-Type Air Shaft:

Structure:

• Leaf-Type Air Shafts consist of multiple curved metal leaves that surround a central shaft. Air pressure is applied through the central shaft to expand and grip the web material.

Primary Application Scenarios:

• Suitable for large-diameter web materials such as paper rolls, plastic rolls, and metal rolls.
• Used in applications requiring good support and winding stability.

Advantages:

• Provides reliable winding stability, suitable for large-diameter materials.
• Offers high tension control to prevent web material slack.

Tork Type Air Shaft:、

Structure:

• Tork Type Air Shafts have a central shaft and torque bars that connect to the shaft and grip the web material by twisting.

Primary Application Scenarios:

• Used in applications requiring high web flatness and tension control, such as high-speed printing machines, coating machines, and laminating machines.

Advantages:

• Provides excellent tension control, suitable for applications with high tension requirements.
• Maintains web material flatness.

Keyed Air Shaft:

Structure:

• Keyed Air Shafts consist of a central shaft and a series of parallel keys or key slots. These keys move via air pressure to grip or release the web material.

Primary Application Scenarios:

• Suitable for applications requiring high tension control and compact winding.
• Used for various sizes and types of web materials.

Advantages:

• Provides reliable tension control, suitable for applications with high tension requirements.
• Adaptable to different sizes of web materials.

Differential Air Shaft:

Structure:

• Differential Air Shafts are used for winding multiple layers of web material, allowing different layers to rotate at different speeds to reduce friction or damage.

Primary Application Scenarios:

• Suitable for applications involving multiple layers of web materials, such as rewinding machines and film laminating machines.

Advantages:

• Reduces friction and damage between different layers of web materials.
• Provides effective tension control for multi-layer web materials.

Recommended Scenarios:

• High Tension Control Requirements: For applications demanding precise tension control, Tork Type or Keyed Air Shafts may be the preferred choice.

• Large Diameter Web Materials: If you need to wind large-diameter web materials, Leaf-Type Air Shafts may be more suitable due to their excellent support.

• Multi-Layer Web Materials: For applications involving multi-layer web materials, Differential Air Shafts are valuable as they reduce friction between layers.

• General Winding Applications: For general winding stability requirements, Tork Type Air Shafts are a versatile choice suitable for many applications.

    When choosing an air shaft, consider factors such as web material properties, winding speed, winding diameter range, tension requirements, production environment, cost, manufacturer reputation, and conducting applicability tests to ensure the selected air shaft meets your specific needs. The best choice will depend on the requirements of your particular application.

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