铝合金轴

高强度钢摩擦型线圈可膨胀

Overview
Also known as Ball Type Differential Air Shaft, Pneumatic Differential Shaft, or Slip Differential Shaft. Designed for precision slitting and rewinding applications to provide independent tension control for each rewind core, ensuring consistent winding quality and reducing material waste. Uses advanced pneumatic friction ring technology to automatically compensate for web thickness variations during rewinding.

Function & Principle
A Ball Type Differential Shaft uses independently controlled friction rings mounted on the shaft body. Pneumatic pressure activates steel balls inside each friction ring, generating controlled slip torque during rewinding. When differences in material thickness, tension or roll diameter occur, each friction ring slips independently to equalize tension across every rewind core, improving rewinding quality compared with conventional air shafts.

Applications

• Film slitting and rewinding
• Label converting
• Paper rewinding
• Aluminum foil slitting
• Copper foil processing
• Flexible packaging production
• Lithium battery film manufacturing (separator films)
• Optical film converting
• Nonwoven fabric processing
• Laminating and coating lines

Common materials handled

• PET, BOPP, CPP, PE, PVC films
• Aluminum foil, copper foil
• Release liners, paper, label stock
• Nonwoven fabrics

Benefits

• Independent tension control for each rewind core
• Automatic compensation for web thickness variations
• Improved roll winding consistency; reduced wrinkles and telescoping
• Stable slip torque during high-speed operation
• Lower material waste and production losses
• Suitable for narrow web and lightweight materials
• Long service life with minimal maintenance

Technical Specifications (table)
Item — Specification
Product Type — Ball Type Differential Shaft
Expansion Method — Pneumatic
Core Size — 3 Inch / 6 Inch
Friction Ring Width — 25mm, 30mm, 35mm, 40mm, 45mm, 50mm
Shaft Material — High Strength Steel or Aluminum Alloy
Shaft Length — Customized
Slip Torque — Adjustable
Application — Slitting and Rewinding Machines
Operating Mode — Independent Differential Tension Control
Surface Treatment — Precision Machining
Balance Treatment — Dynamic Balancing
OEM / ODM — Supported

Custom shaft diameters, lengths, friction ring widths, and torque configurations are available according to machine specifications and production requirements.

Why choose this solution
Ball type differential shafts offer smoother slip control and higher tension accuracy compared with lug-type or conventional air shafts, making them ideal for films, labels and lightweight materials that require precise winding performance. The product is manufactured with precision machining and dynamic balancing for stable high-speed operation.

Caractéristiques / spécifications techniques

• Type de produit: Ball Type Differential Shaft
• Méthode d'expansion: Pneumatic
• Taille de mandrin: 3 Inch / 6 Inch
• Largeurs des anneaux de friction: 25mm, 30mm, 35mm, 40mm, 45mm, 50mm
• Matériau de l'arbre: Acier haute résistance ou alliage d'aluminium
• Longueur d'arbre: Sur mesure
• Couple de glissement: Réglable
• Application: Machines de découpe et de rembobinage (slitting & rewinding)
• Mode d'exploitation: Contrôle différentiel de tension indépendant
• Traitement de surface: Usinage de précision
• Traitement d'équilibrage: Équilibrage dynamique
• Support OEM/ODM: Oui