Created on 11.05

SQL Air Differential Shaft---Innovative Upgrade Solution for High-Precision Tension Control

The SQL Air Differential Shaft is a breakthrough innovation in differential shaft design.
Its unique dual-air-channel structure separates the lock air pressure from the regulating air pressure, enabling smooth and precise tension control from ultra-low to high tension ranges.
This system ensures stable winding tension, mirror-flat roll ends, and high operational reliability even under high-speed and precision-demanding conditions.
With a single pneumatic button, roll loading and unloading become effortless.
During film splicing, feeding, or roll changes, the shaft maintains perfect alignment without displacement, ensuring consistent production results.
The SQL dual-air differential shaft is an upgraded evolution of traditional central pneumatic shafts, delivering greater control accuracy, faster response, and superior usability for advanced converting and rewinding systems.
🔹 Dual air circuits separate locking and regulating pressures
🔹 Wide tension range from ultra-low to high
🔹 Stable winding and ultra-flat roll surface
🔹 One-touch pneumatic loading/unloading
🔹 Zero displacement during material change
🔹 Rugged structure and easy maintenance
Representative Types
XC Type (Nishimura Style) – Ideal for slitting and winding lithium battery separators, electrodes, ultra-low-tension PET films, electronic films, photosensitive dry films, copper and aluminum foils.
PG Type (Kataoka Style) – Suitable for composite films and tobacco packaging films, offering stable tension and perfect roll formation.
Application Fields:
• Lithium battery separator and electrode production
• Optical, functional, and electronic film slitting
• Copper foil and aluminum foil winding systems
• Tobacco packaging and composite film converting
• Coating and laminating production lines
Why Choose Etto Precision
Etto Precision provides over a decade of expertise in precision air shafts and tension control systems.
With proven stability and advanced design, our products serve lithium battery, packaging, and electronic film industries globally.
Contact Us
📩 Email: rathy@etto-xa.com
🌐 Website: www.etto-xa.com
📞 Tel: +86 18502982090
For detailed specifications or customized solutions, contact our experts today.
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