Application Technology

Through its innovative approach, Alcomex has become the sole partner for springs to one of the leading producers of insulated overhead garage doors for industrial and residential buildings. 

Spring technology is a complex part of the sectional overhead garage door, because if the door springs are not well balanced, the door does not run smoothly. Alcomex, part of the Lesjöfors Group, is a highly specialised leading supplier to the door spring market in Europe. One of Alcomex’s customers is ConDoor, a major producer of insulated overhead doors – producing more than 50,000 doors per year. Since 2017, Alcomex has been the sole supplier of door springs to the company after a process of investigating, bench-marking and testing of Alcomex’s solutions.

Kees-Jan Honig, CEO of ConDoor, comments on the test process: “After running a severe testing programme in our own laboratory, we started producing small batches of doors with Alcomex springs. When all the ‘lights turned green’ in 2017 – including our customers (the door dealers that install the door at the homeowner or industrial facility) being happy with the new quality, life span and balance – we took the next step and Alcomex became our sole supplying partner in springs, which means that we are 100% relying on their operational excellence performance.”

ConDoor was also impressed by Alcomex’s innovative approach, after the company introduced the Quattro tension spring solution, which brought many benefits for ConDoor – especially as tension springs were perceived as the lesser solution in the garage door business.

Kees-Jan Honig explains: “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 system was 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.”