What are winding and expanding shafts?
Winding shafts, also known as expanding shafts, are key mechanisms for gripping and rotating roll materials such as paper, films, nonwovens, textiles, and metal or plastic webs. They ensure precise, concentric clamping, transmit high torque, and enable fast, safe roll changes without production interruptions.
Concentric clamping & precision
Smooth running without material distortion. Our expanding shafts deliver precise, concentric clamping for optimal web guiding and the highest quality standards throughout every production stage.
High torque transmission & fast roll changes
Reliable even with heavy, large rolls. Fast, safe roll changes significantly reduce downtime and noticeably increase your line’s productivity.
Precision that keeps industry moving
WST expanding shafts are used across many industries where tension, speed and precision are critical:
Printing & packaging industry
Paper rolls, films, laminations – for even winding without creases. Optimized for high-speed production with precise web guiding.
Textile & nonwoven processing
Nonwovens, filter media, technical textiles – consistent tension and optimized downstream processing. Gentle handling for sensitive textiles.
Metal & plastic webs
Aluminum and PET films, specialty webs – precise torque transmission for heavy rolls. Robust design for demanding industrial applications.
Coating & laminating machines
Perfect winding for top quality standards. Precise tension control for defect-free coating processes and optimal material quality.
Flexibility & reliability for every application
Our expanding shafts provide maximum flexibility and reliability for a wide range of industrial requirements.
Rolls of every size and weight
From small to large industrial rolls – our expanding shafts adapt flexibly to every requirement. Clamping ranges from 25 mm to over 500 mm for universal use.
Variable clamping force
Applications with different clamping-force requirements are optimally supported. Precise adjustment options for every material and line speed.
Precise centering
Consistent web guiding through exact centering for the highest quality standards. Prevents run-out and material distortion in every production phase.
Robust construction
Service-friendly design minimizes production outages and maximizes reliability. High-quality materials ensure long service life even in continuous operation.
Why WST expanding shafts are the first choice
Concentric clamping
Protects the material, prevents wandering and creasing. Even force distribution for perfect web guiding without distortion.
High torque transmission
Reliable even with heavy rolls and high-speed production. Optimized design for maximum power transfer without slip.
Flexible clamping ranges
Adapt to any core size. Flexible clamping ranges from 25 mm to over 500 mm enable universal use for a wide variety of roll diameters.
Different actuation types
Pneumatic, mechanical or friction for any production environment. Choose the optimal solution for your specific requirements.
Custom adaptations
Tailor-made for every roll, material and production line. Each shaft is manufactured and optimized to your exact specifications.
Durable & productivity-boosting
High-quality materials, robust design, long service life. Minimizes downtime and optimizes material flow for maximum efficiency.
Operating principle & technology
Pneumatic expanding shafts
Compressed air presses lugs or shells radially against the roll core to ensure uniform clamping. Ideal for fast roll changes, high speed and sensitive materials. When deflated, the lugs retract without damaging the material.
Mechanical expanding shafts
Clamping elements act radially on the core via cones, wedges or threaded spindles. This solution is low-maintenance, robust and highly reliable—ideal for simple processes without pneumatics.
Friction shafts
Friction torque is adjusted individually—ideal for varying web tensions or sensitive materials. This reduces wear and ensures consistently high quality.
Our winding & expanding shafts – types & specifications
Pneumatic
SWY, SWX, SWL/LZW – from lightweight designs to heavy-duty applications. Ideal for fast roll changes and precise tension control in demanding production environments.
Mechanical & friction
SWS/SWM – low-maintenance, robust, easy to handle. FSW – individually adjustable friction for varying web tensions and sensitive materials.
| Type | Clamping range | Features | Application |
|---|---|---|---|
| SWY | 25 mm – over 500 mm | Lightweight design, external clamping lugs | Rolls up to medium weight |
| SWX | 50–152 mm | Multiple clamping elements | High bale weights |
| SWL/LZW | 50 mm – over 500 mm | Heavy-duty, high speeds | Large rolls / industry |
| FSW | 25.4 mm – over 500 mm | Pneumatically adjustable friction | Varying tensions, without pneumatics |
| SWS/SWM | 50–400 mm | Mechanical, low maintenance | Robust standard applications |
Custom adaptation & maximum efficiency
Each variant is tailor-made and can be adapted to material type, roll dimensions and line speed. An optimized design ensures top productivity and minimal downtime.
Durability & quality assurance
High-quality materials and robust construction ensure long service life even in continuous operation. Tested to the highest industrial standards for maximum reliability and safety.
Details that make the difference
Rely on experience, quality & service
in tensioning & winding technology “Made in Germany”. Long-standing experience in developing and manufacturing high-precision tensioning systems for industry.
Solutions for every roll and material type. Each shaft is made individually to your requirements and optimized.
Accessories, repair & maintenance from a single source. Complete service from consultation to maintenance for maximum reliability.
Broad product range
Pneumatic, mechanical, friction, custom solutions. From standard products to complex special builds – we have the right solution.
Fast delivery & support
For minimal production downtime. Short lead times and fast support to maximize equipment uptime.
Quality assurance
Tested to the highest standards for industrial equipment. Each shaft undergoes comprehensive quality checks for guaranteed reliability.
Insights into our tension systems
Selected photos from production and application – tension and winding technology Made in Germany.
Application Examples
Flexible Packaging Printing
Roll changes in seconds with no material loss. Our pneumatic expanding shafts enable seamless workflows with minimal downtime and maximum efficiency.
Textile finishing
Highly precise winding of nonwovens with consistent tension. Gentle handling for sensitive textiles with optimal tension control for perfect results.
Metal film lamination
No creases and optimal web guiding. Precise centering and uniform tension for defect-free lamination processes even at high speeds.
Packaging industry
Fast roll changes and maximum production reliability. Robust construction for 24/7 operation with minimal maintenance and top reliability.
Paper processing
Precise tension control for different paper grades. Optimized for high-speed presses with uniform web guiding and minimal wear.
Plastic film production
Reliable tension even for thin, sensitive films. Developed for demanding extrusion and coating processes with the highest precision.
Frequently asked questions
Which materials can be wound?
Which materials can be clamped?
How do I choose the right shaft?
Pneumatic or mechanical?
Are custom dimensions possible?
How is maintenance performed?
How can the service life of shafts be extended?
Content & practical value
Tips for long service life
Regular maintenance and care significantly extend the service life of your expanding shafts. Controlled tension, a clean environment and lubrication according to specifications are essential.
Optimal web tension
Each material requires specific tension settings for optimal results. Our experts advise you on the best configuration for your materials.
Error prevention & best practices
Proper handling and preparation minimize errors and downtime. Proven methods to increase productivity while protecting your material.
Comparison of actuation types
Advantages and disadvantages of the different actuation types compared directly: pneumatic for speed, mechanical for robustness, friction for variability.
Maintenance planning & inspection
Structured maintenance plans and regular inspections help maximize equipment uptime. We support you with tailored maintenance concepts for your equipment.
Material selection & compatibility
Choosing the right materials for lugs and bearings is crucial for service life. Our experts advise you on the optimal material combination for your application.
Our products in action
High-precision tensioning systems Made in Germany – from development to manufacturing.
Friction shafts
FSW with friction rings for varying web tension – also without pneumatics
Mechanical expanding shafts
Robust SWS series for low-maintenance applications
Friction shafts
Individually adjustable friction for varying web tensions
Mandrels
Precise clamping with oil pressure intensifier for demanding applications
Chucks
High-precision chucks for shaftless winding and unwinding
Clamping couplings
Reliable coupling element for simple application without pneumatics
SKA mandrels
Special solutions for individual requirements
Manufacturing & quality
Made in Germany – highest precision in every component
Configure your custom winding & expanding shaft now
Our experts advise you on torque, core, clamping range and the right variants – fast, precise and reliable.
Request consultation