EuroWire January 2023

Products

Optimal tension springs for garage doors Springs are a vital part of the perceived quality of a sectional overhead garage door. If door springs are not well balanced, the door does not run smoothly. Spring technology is a complex part of the sectional overhead garage door and a combination of factors determine the quality, life span and functioning of a spring.

and residential buildings. Since 2017, Alcomex has been the sole supplier of door springs to the company, after a process of investigating, benchmarking and testing Alcomex’s solutions. Kees-Jan Honig, CEO of ConDoor, commented on the test process: “After running a severe testing programme in our own lab, we started producing small batches of doors with Alcomex springs. When all the lights turned green in 2017, we took the next step and Alcomex became our sole supplying partner in springs, whichmeans that we are 100 per cent relying on their operational excellence performance.” Alcomex introduced a Quattro tension spring solution that brought benefits to ConDoor. Tension springs were previously seen as a lesser solution in the garage door business. Mr Honig explained:“Torsion springs could be calculated exactly to the right door weight and lifting system, and with tension springs people always claimed that you had to compromise on this. The Quattro system proved to be perfect for our residential doors. Thanks to the spring-in-spring solution, the systemwas able to comply with the tough European safety norms. Also, the construction of the spring sets proved to be very compact, using little build-in space, which made it possible for us to offer pre-tensioned hardware sets to our customers, saving them time and money on site. The next step was the availability of that system for higher door weights, meaning bigger garage doors. Nobody wants to go back to the more complex and expensive old solution now.” Lesjöfors AB www.lesjoforsab.com

Alcomex, part of the Lesjöfors’ Group, is a specialised supplier to the door spring market in Europe. One of its customers is ConDoor, a producer of insulated overhead doors for industrial

ConDoor uses the Quattro tension spring solution

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