Вал алюминиевый сплав

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Overview
Also known as Ball Type Differential Air Shaft, Pneumatic Differential Shaft, Slip Differential Shaft or Slip 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 pneumatic friction ring technology with pneumatically activated steel balls to generate controlled slip torque for automatic compensation of web thickness and roll diameter variations.

Key Functions and Features

• Independent differential tension control for each rewind core to maintain uniform web tension across multiple rolls.
• Automatic compensation for web thickness variations via independently slipping friction rings.
• Pneumatic activation (pressurized air) to actuate steel balls inside friction rings and produce controlled slip torque.
• Available in standard core sizes (3 inch and 6 inch) and multiple friction ring widths; shaft materials include high strength steel or aluminum alloy.
• Customizable shaft diameters, lengths, friction ring widths and torque configurations to match machine specifications.
• Dynamic balancing and precision machining for stable high-speed operation and long service life.

Applications

• Film slitting and rewinding (PET, BOPP, CPP, PE, PVC, optical films)
• Label converting and label stock rewinding
• Paper rewinding and release liner processing
• Aluminum foil and copper foil slitting
• Flexible packaging production
• Lithium battery separator film manufacturing
• Nonwoven fabric processing
• Laminating and coating lines

How Ball Type Differential Shafts Work
A ball type differential shaft uses independently controlled friction rings mounted on the shaft body. Pneumatic pressure actuates steel balls within each friction ring, producing an adjustable slip torque. When variations in material thickness, roll diameter or winding tension occur, each friction ring slips independently to equalize tension across all rewind cores, improving winding quality and reducing defects such as wrinkles, telescoping and loose winding.

Benefits

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

Technical Specifications
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

Manufacturing & Quality
Manufactured from seamless steel tubes or high-strength aluminum alloy profiles. Products undergo precision machining, strict quality inspection and dynamic balancing treatment. ISO9001 certified production ensures consistent product quality, reliable performance and factory-direct manufacturing support.

Caractéristiques / spécifications techniques

• Type de produit : Ball Type Differential Shaft
• Méthode d'expansion : Pneumatic
• Taille de noyau : 3 Inch / 6 Inch
• Largeurs d'anneau de friction : 25mm, 30mm, 35mm, 40mm, 45mm, 50mm
• Matériau de l'arbre : Acier haute résistance ou alliage d'aluminium
• Longueur de l'arbre : Personnalisée selon besoins
• Couple de glissement : Réglable
• Application : Machines de slitting et rewinding
• Mode de fonctionnement : Contrôle différentiel indépendant de la tension
• Traitement de surface : Usinage de précision
• Traitement d'équilibrage : Équilibrage dynamique
• Support OEM/ODM : Oui