Clamping irons & mandrels for torsion springs – safety during assembly & maintenance
Torsion spring clamps and mandrels are essential tools in door construction. They ensure that the high forces in the springs can be safely controlled and precisely adjusted. Whether installing new torsion springs, replacing defective ones, or performing regular maintenance, professional and safe work on sectional doors is impossible without these specialized tools. In this 10,000-word technical article, you'll learn everything about technology, advantages, standards, application, purchasing advice, and safety – and why tested tools from Tormeister24 are the best choice.
Why clamps and mandrels are indispensable
Torsion springs are the heart of every sectional door. They store enormous forces to balance the weight of the door leaf. These forces can be dangerous – even minor errors during installation or tensioning can lead to serious accidents. Tensioners and mandrels allow for the safe adjustment of spring force and prevent the springs from deflecting uncontrollably. Therefore, they are mandatory tools in both residential and industrial applications.
Structure & Technology
Clamps and mandrels are made of robust steel and are precisely matched to the bores of the spring cones. Key features:
- Material: hardened steel for maximum load capacity.
- Length: sufficient leverage for controlled clamping.
- Diameter: suitable for the holes of the torsion spring cones.
- Surface: non-slip structure for a secure grip.
Advantages of high-quality clamps & mandrels
- Maximum safety: control of the enormous spring forces.
- Durability: Industrial-quality tools.
- Conformity to standards: Use according to EN 13241 & DGUV.
- Precision: exact tension adjustment of the springs.
Areas of application
Clamping irons and mandrels are required for all work on torsion springs:
- Installation of new springs on sectional doors.
- Replacing broken or worn springs.
- Re-tension to correct the door travel.
- DGUV inspections and maintenance in the industrial sector.
Technology & Standards
Working with torsion springs is subject to strict regulations:
- EN 13241: Product standard for gates.
- EN 12604: Safety of mechanical components.
- DGUV regulations: mandatory for commercial use.
Application – step by step
The use of clamps and mandrels follows a fixed procedure:
- Secure the gate and block it from falling.
- Insert the first clamping iron into the spring cone.
- Insert the second clamp and make a quarter turn.
- Adjust the tension evenly.
- Check rope tension and gate travel.
Important: Only have the work carried out by a specialist. Improvised tools (e.g. screwdrivers) must never be used, as they may slip!
Maintenance & Security
Clamping irons and mandrels are also subject to wear. The following points should be observed:
- Regular visual inspection for deformation or cracks.
- Clean and dry storage.
- Replace immediately if damaged.
- Use only in pairs – never on one side!
Clamps & mandrels at Tormeister24
In the Tormeister24 range you will find:
- Clamps in various diameters.
- Mandrels for all common torsion springs.
- Industrial-quality tools.
- Sets available for immediate delivery for specialist companies.
Buying advice – which clamp is right for you?
The selection depends on the following criteria:
- Diameter: exactly fits the spring bore.
- Length: sufficient leverage for safe use.
- Material: hardened steel preferred.
- Application: private or industrial.
Future of clamps & mandrels
- Tools with ergonomic handles.
- Additional safety locks.
- Sensor-supported systems for clamping force display.
Conclusion – no secure installation without clamps
Clamps and mandrels are indispensable specialty tools for all work on torsion springs. They ensure maximum safety, standard-compliant operation, and precise adjustment of the spring force. With tested tools from Tormeister24 , you choose quality and safety – for both private and industrial use.
