12 Industry News Also online at www.dijonline.co.uk Door Industry Journal Spring 2026 Safe and Efficient Spring Tensioning with Surewinder and Brutewinder GARAGE DOOR spring tensioning is one of the most critical and potentially hazardous tasks for installers and service professionals. At SOMMER DOCO UK, part of the SOMMER Group, we understand the importance of safety, efficiency and precision in this essential process. That’s why we’re proud to be the official European distributor of the Surewinder and Brutewinder spring winding tools, trusted by professionals worldwide for their durability, ease of use and safety benefits. Minimising the Risk of Spring Tensioning Torsion springs are under immense pressure and require exacting force to install or adjust correctly. Traditional winding methods often involve manual tensioning bars and considerable physical effort, increasing the chance of misjudgment or injury. With installers’ safety being a top priority, more professionals are turning to drill-operated winding tools that do the job more safely and with greater control. Trusted Tools for Modern Installers Available through SOMMER DOCO UK, the Surewinder and Brutewinder systems represent a significant advancement in spring tensioning technology. • Surewinder is our standard tool designed to replace traditional winding bars. It allows technicians to wind torsion springs using a standard cordless drill, delivering smooth, controlled tensioning with reduced manual effort. • Brutewinder, its robust counterpart, is a heavy-duty solution ideal for larger spring setups or commercial doors. Built for power and endurance, it offers similar ease of use while tackling even the most demanding spring systems. Both tools are designed to work with industry-standard torsion springs and are compatible with a wide range of garage door systems, including those supplied by DOCO. Key Benefits: • Enhanced Safety: Minimise the physical risks associated with manual winding, especially when working at height or under pressure. • User-Friendly: Designed for use with standard drills, the tools are quick to set up and simple to operate, even for new technicians. • Durable Construction: Engineered with professional use in mind, both tools are built to withstand the rigors of daily on-site work. Both tools are available directly from SOMMER DOCO UK. Trade enquiries are welcome, with training and instructions provided. For more information, visit www.doco-international.com or email us at sales@doco-international.com Surewinder vs. Brutewinder: Comparing our Spring Winding Tools Feature Surewinder Brutewinder Application Residential & light industrial Industrial Max. torque rating 115,8 Nm 285 Nm Max. wire thickness 9 mm 12 mm Nut for driving 14 mm with a 6-point socket Min. clearance area (from shaft to wall) 64 mm 89 mm Suitable spring diameter 51 - 95 mm 51 - 152 mm Suitable shaft diameter 25,4 mm (1”) 25,4 mm (1”) & 31,75 mm (1,25”) Weight 3,4 kgs 5 kgs Size of tool 533 x 152 x 89 mm 625 x 206 x 127 mm Material 304 stainless steel & bronze A comparison between Surewinder and Brutewinder
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