Door springs
The performance, safety, and feel of a door depend heavily on one critical component: the spring set. High-quality torsion and tension springs balance overhead doors, ensuring smooth operation, long service life, and a premium end-user experience.
While tension springs have long been standard in garage doors, advances in insulated, high-performance door systems are making torsion springs a popular choice as well. Offering greater accuracy for heavier doors and complex lifting systems, torsion springs deliver precise control when performance demands are highest.
From industrial door springs to commercial and residential, Lesjöfors combines expert craftsmanship with advanced manufacturing to develop extension and torsion springs engineered for precise motion control across a range of door systems.
Technical specifications
- Wire diameter
4 mm up to 12 mm, for standard torsion spring sets in the diameter range 51-67-95-152 mm, being 2”- 2 ⅝”- 3 ¾” and 6
- Materials:
Carbon steel, EN10270-1-SH (-Zn)
- Features:
shot-peened and powder-coated & galvanised
- Stock & custom options:
standard cones and hardware - specific door configurations on request
Range: Our extension springs are designed for residential sectional doors, ranging from 1800-3500 mm and a door weight of 22-150 kg
What are door springs?
Door springs balance and control the movement of a door. Depending on the design, weight, and performance requirements, they are typically either torsion springs or extension (tension) springs.
Garage door systems commonly use extension springs to support a wide range of door sizes and weights. Torsion springs, mounted above the door opening, deliver more controlled, smooth motion and longer service life.
Together, these spring types enable safe, reliable, and efficient operation across residential, industrial, and commercial door applications.
What are Quattro tension springs?
Quattro tension springs are innovative garage door springs developed by Alcomex, part of the Lesjöfors network. Their compact spring-in-spring design meets strict European safety standards.
They fit into smaller, built-in spaces (as little as 35 × 55 mm), making installation quicker and more efficient. This allows door manufacturers to supply pre-tensioned hardware sets, saving time, space, and cost on-site.
Extensively tested and trusted by leading door manufacturers, Quattro tension springs offer a reliable and efficient solution for modern residential garage doors.
Product availability
Custom door springs
Every application brings its own challenges, and our torsion and tension door springs are engineered to meet them. We work closely with you to develop solutions tailored to your exact performance requirements - optimizing dimensions, material selection, and operating conditions.
Backed by decades of industry experience, we ensure every door spring is not only fully functional, but precisely optimized for its intended application.
Quattro tension springs
Quattro tension springs are ideal for modern garage door applications worldwide. Proven through extensive testing and trusted by leading door manufacturers, Quattro springs deliver reliable, efficient performance for today’s residential door systems.
Types of door springs
Extension spring sets developed for garage doors
Our extension (tension) spring sets for garage doors are based on patented solutions and engineered to exceed industry standards. We offer a comprehensive range of extension systems, covering door weights from 20 kg to 150 kg, and accommodating door heights of up to 3 meters, in accordance with EN 12453l.
Torsion springs sets for garage doors
All customized torsion springs for doors undergo shot peening and powder coating is also available - to extend service life and increase load capacity. Available in both standard and customized lengths, these springs are offered in diameters of 51, 67, 95, and 152 mm, with wire diameters of up to 12 mm.
Advanced door spring manufacturing
For decades, we have led innovation in spring manufacturing. By combining advanced coiling technology with expert craftsmanship, we deliver consistently exceptional results. Our CNC-controlled processes ensure tight tolerances, high repeatability, and long-term strength.
Every spring is ISO-certified and engineered to perform under demanding conditions.
How do torsion door springs work?
Torsion springs work by generating rotational force. As the spring is twisted, energy is stored within the coiled wire. When released, this energy produces torque that lifts, lowers, or returns the door to its closed position.
In door hardware, torsion springs are valued for their precision and are commonly used in applications requiring accurate force control, particularly in heavier or high-performance doors.
How do extension door springs work?
When it comes to garage door parts, extension (tension) springs operate by resisting pulling forces. As the door opens, the spring stretches and stores energy.
When the door closes, that energy is released, pulling the door back into position. The coils separate under load and return to a tightly closed state when unloaded, making extension springs a proven and widely used solution, especially in traditional garage door systems.
How does the Quattro tension spring work?
Quattro tension springs are designed specifically for modern residential doors, featuring a compact spring-in-spring construction that requires minimal built-in space.
This evolution of the extension spring delivers reliable performance in increasingly compact and insulated door designs.
Door spring materials
Our door springs are manufactured from high-quality carbon spring steel, EN10270-1-SH (-Zn), selected for durability, performance, and suitability in demanding environments.
Trusted in construction and defense systems
Powering progress with precision springs for hardware applications
Lesjöfors delivers high-performance commercial door springs, combining global expertise, precision engineering, and reliability to support industrial hardware suppliers.
High-performance springs for military and defense systems
Explore our advanced springs for defense. Our custom components are engineered for durability, strength, and reliability in the most demanding land, sea, and air applications.
Related products
Disc springsDisc springs
Conical disc springs in spring steel for high force within limited travel.
Extensions springsExtension springs
Helical springs in wire diameters of 0.1 - 65 mm, suitable for static, quasi-static, and dynamic loads.
Compression springsCompression springs
Cylindrical springs in wire diameters of 0.03 - 80 mm.
FAQs
Resources and support
- Learn more about Lesjöfors
About Lesjöfors
- Contact our team of experts
Contact and support
- Explore FAQs and advice
FAQs & technical advice