OEMs in industries like automotive, aerospace, military, oil & gas, petrochemical, and marine often face challenges in sourcing torsion springs that can handle extreme loads, harsh environments, and precise performance requirements. Standard options may not deliver the durability, material strength, or dimensional accuracy needed for critical applications.
Coiling Technologies provides a solution with custom-engineered single-body, double-body, and large-diameter coil torsion springs. Using premium materials, including carbon steels and advanced superalloys such as Rene 41 and Inconel, we deliver high-strength custom torsion springs that meet exact specifications and perform reliably in the most demanding operating conditions.
How Torsion Springs Work
Torsion springs function by storing mechanical energy when twisted. The wind tightness is proportional to the energy stored; this torque is released when the spring unwinds.
The ends of the spring are anchored to separate components, and as those components rotate around the spring’s center, the spring exerts a restoring torque. This makes them ideal for applications where rotational force must be applied or resisted with precision.
Single vs. Double Torsion Springs
We manufacture both single-bodied and double-bodied torsion springs:
- Single Torsion Spring – One continuous coil designed to apply torque in a single rotational direction.
- Double Torsion Spring – Two sets of coils wound in opposite directions (right-hand and left-hand) connected by an unwound section. The torque of both coils works in parallel, providing increased force in compact designs.
Custom Torsion Spring Manufacturing
As a custom torsion spring supplier, Coiling Technologies applies over 45 years of engineering expertise to design, prototype, and produce springs that meet stringent requirements for load, deflection, and environmental conditions.
When developing your spring, our engineers evaluate:
- Spring rate (torque per degree of deflection)
- Maximum deflection and load capacity
- Direction of wind (right-hand or left-hand)
- Wire diameter and coil inner/outer diameters
- Material properties for operating conditions, such as elevated temperatures or corrosive environments
We can produce torsion springs in a wide range of materials, diameters, thicknesses, and end configurations. Our Houston, Texas, facility supports both prototype and large-scale production runs, with ISO 9001:2015-certified quality control processes.
Torsion Spring Materials
Our material selection is designed to meet, and often exceed, OEM and industry standards (ASTM, SAE, DIN, AMS). We source from trusted domestic and international suppliers to ensure consistent quality.
High Carbon & Low Carbon Steels
- ASTM A227, A228, A229, A231, A232, A401, A877, A1000, SAE 9254, SAE 4160, SAE 4340, SAE 5160, 51CrV4, 52CrMoV4
- Properties: High strength, good ductility, economical, suitable for up to 450°F and repeated shock loading
- 17-4, 17-7, 302, 316 stainless grades
- Properties: Excellent corrosion resistance, reliable performance, good tensile strength
Super Alloys & Nickel Alloys
- Alloy 20, A286, Hastelloy C-276, Inconel 600/625/718/X-750, Monel 400/K500
- Properties: Exceptional high-temperature and corrosion resistance to extreme environments
- Elgiloy, Haynes 282, MP35N, Nimonic 90, Rene 41, Waspaloy
- Properties: Resistant to sulfide stress corrosion and cracking
Nonferrous Alloys
- Beryllium copper, phosphor bronze, titanium grades 1, 2, 5, and beta alloys
- Properties: Nonmagnetic, highly corrosion-resistant
Wire Types & Dimensions
Torsion springs can be manufactured from a wide range of materials, each offering unique mechanical properties and performance characteristics. The right wire type ensures the spring can withstand the necessary torque, environmental conditions, and load cycles for your application.
- Wire shapes: Round, square, rectangular
- Wire diameter: 0.007" to 0.625"
- Bar diameter: 0.625" to 2.500"
- Coil diameters: Up to 24"
- Lengths: Up to 72"
End Configurations
Torsion springs are mounted around a shaft or arbor and require at least three points of support. Available ends include:
- Special designs (per customer spec)
- Short hook
- Hinge
- Straight offset
- Straight torsion
- Double torsion
Applications of Custom Torsion Springs
Our coil torsion springs and heavy-duty torsion springs are engineered for demanding environments and can function in clockwise or counterclockwise configurations. Common uses include:
- Garage doors and counterbalance systems
- Self-closing doors and maritime hatches
- Automotive lift gates and tailgates
- Firearms, doorknobs, and security devices
- Switches, ratchets, and machine components
- Electronics, chair controls, and window shades
- Construction and agricultural equipment
Quality Assurance and Testing
Every custom torsion spring we produce undergoes rigorous inspection and verification to ensure it meets the specified tolerances and mechanical properties. Our quality program includes dimensional checks, load testing, material certification, and compliance with applicable industry standards. This commitment to precision helps our customers avoid costly downtime and ensures reliable performance in the field.
Torsion Spring FAQ
What is a torsion spring?
Torsion springs are helical, coiled springs designed to store force when the ends are twisted or torqued. This application allows the spring to create a torsional force, which will be released when the spring is not under torsional rotation, allowing the spring to return to its original position.
What are torsion springs' most common applications?
Common applications include:
- Garage doors.
- Maritime hatches and self-closing doors.
- Automotive lift gates.
- Industrial equipment.
- Oilfield valves, safety mechanisms, and SSSV deepwater applications.
- Consumer products (clipboards, shutter mechanisms, pest control traps)
- Electrical switches (eg, Automotive, Household, Industrial)
- Medical devices.
What are the different types of torsion springs?
Torsion springs can be configured as single-body or double-body torsion. Each configuration is unique to its application. Double body torsion springs are connected by a center leg (hair pin) and manufactured following the same wind direction.
Can torsion springs be customized?
The answer is yes. Most, if not all, torsion springs can be customized to meet desired conditions like force, torque, or degree values and housing restrictions based on the application.
Are torsion springs limited to the shape of wire cross sections?
Torsion springs can be configured and manufactured using square wire or rectangular wire cross-section. This application usually allows torsion springs to develop higher torsional force with less angular (torsional deflection). Such applications are commonly found in Oil and Gas operations as well as Naval or Maritime environments.
Still have questions? Contact our engineering team now. We can answer any question related to torsion springs!
Why Work with Coiling Technologies, Inc.?
Choosing the right spring manufacturer is critical to achieving optimal product performance and reliability. Our team combines engineering expertise, precision manufacturing, and a commitment to customer satisfaction that sets us apart in the industry.
- ISO 9001:2015 certified manufacturing in Houston, TX
- Over 45 years of experience in precision spring engineering
- Expertise in exotic alloys for high-performance applications
- In-house capabilities: heat treating, powder coating, shot peening, magnetic particle inspection, cycle testing, stamping, and wire forming
- Scalable production from prototypes to high-volume orders
Request a Quote for Your Custom Torsion Spring
If you require a custom torsion spring built to exact tolerances and capable of performing under extreme conditions, partner with Coiling Technologies. Our team works directly with your engineers to ensure your design goals, performance targets, and delivery timelines are met.
Contact us today to request a quote!
