Created on 2025.12.17

Comparison of Advantages: Differential Slip Shaft vs Air Shaft

In modern slitting and web processing equipment, air shafts and differential slip shafts are two common types of shaft clamping devices. Each has unique structural features and application advantages, and selecting the right one can enhance production efficiency and equipment stability.

Advantages of Air Shafts

Strong and even clamping force: Inflates internal air bladder to securely and uniformly clamp the core, reducing web slippage.

Easy and fast operation: Quick inflation for clamping, speeding up roll changes and reducing downtime.

Wide applicability: Supports various core sizes and materials with high flexibility.

Simple maintenance: Easy replacement of air bladder and low maintenance costs.

Good stability: Even clamping prevents web misalignment and loosening, suitable for high-speed lines.

Advantages of Differential Slip Shafts

Automatic tension adjustment: Uses internal slip mechanism to automatically balance web tension, ideal for processes with strict tension requirements.

Reduces tension peaks: Slip design effectively absorbs and cushions tension fluctuations, protecting delicate films and precision materials.

Improves web quality: Prevents wrinkles and damage caused by uneven tension.

Flexible application: Suitable for slitting, rewinding, and various web processing scenarios.

Compact structure: Well-designed for easy integration into production lines.

Summary Comparison

Feature	Air Shaft	Differential Slip Shaft
Clamping Method	Inflated air bladder clamping	Mechanical slip mechanism clamping
Primary Function	Stable core clamping	Automatic web tension regulation
Roll Change Speed	Fast	Slower
Applicability	Various core sizes and materials	Best for high tension control requirements
Maintenance Cost	Low, easy bladder replacement	Higher, complex structure requires regular maintenance
Production Line Suitability	High-speed & multi-product lines	Strict tension control processes

Depending on specific production needs, companies can choose air shafts to improve roll change efficiency and clamping stability or differential slip shafts to ensure uniform tension and stable product quality.