Series 409 friction shaft

Pneumatic Friction Shaft Series 409 – Precision Winding for Delicate Webs

The Vorwald Series 409 LF pneumatic friction shaft is expertly designed for longitudinal web cutting during winding processes, especially for stretch-sensitive materials. Engineered for high performance and reliability, this shaft delivers consistent web tension—even when material thickness varies—ensuring optimal results and reduced waste.

At the core of the 409 LF shaft is a direct friction mechanism where slip occurs between the friction elements and the core. This allows precise control of tension across diverse web widths. The aluminium or steel carrier body features a refined surface finish, and the steel journals are tailored to customer specifications.

A unique pneumatic bladder system applies torque through expanding ledges made of low-friction plastic, pressing against the inner side of the core. Torque is dynamically controlled through a diameter sensing system, maintaining consistent tension with a minimum 3% overspeed requirement.

From core diameters of 50 mm upwards, the Series 409 LF is available in custom dimensions and lightweight variants to meet various operational needs. Its low-maintenance design, quick reel changeovers, and automation compatibility make it an ideal solution for modern converting lines.

Key Features

• Suitable for a wide range of web widths
• Ideal for sensitive or variable-thickness materials
• Short set-up times and low maintenance
• Can be used with safety chucks or automated reel take-off systems
• Optional clamping plates, flat bladders, and custom shaft ends

Applications

• Film and foil converting
• Flexible packaging
• Tissue and nonwoven processing
• Laminates and label production

Custom Options Available

• Core diameters from 50 mm and up
• Lightweight variants for large diameters
• Flange or round journal shaft ends
• Tailor-made dimensions on request