Torsion springs are helical springs used to apply a torque or store rotational energy. The two most common types are single and double-bodied springs. Generally mounted around a shaft or arbor, torsion springs must be supported at three or more points. Various end types are available to facilitate mounting.
Torsion springs are found in clothes pins, window shades, counterbalance mechanisms, ratchets, door handles, cup holders and various machine components. They are also used as couplings between concentric shafts such as motor and pump assemblies.
Torsion springs are stressed in bending. Rectangular wire is more efficient in bending than round wire, but due to the premium cost of rectangular wire, round wire is preferred.
If possible, a torsion spring should always be loaded in a direction which increases body diameter. Unless there are unfavorable residual stresses in the end bends, these springs are normally heat-treated at a low temperature to stabilize the end positions rather than to fully stress relieve them.
The most common materials used by MW Industries to make torsion springs are brass and various steels. The metal alloy selected for wire production is determined by the application, weather, temperature and other environmental considerations. Finishes include trivalent zinc w/ chromate, passivation, e-coat, electro-polish, black oxide and other industrial-grade options.
MW Industries has the ability to manufacture standard torsion springs (.008 in. to .625 in. wire diameter), double-body torsion springs (.008 in. to .236 in. wire diameter) and shaped material torsion springs (rectangular, square).
- Carbon Steel
- Maraging Steel
- Music Wire
- Phosphorous Bronze
- Stainless Steel
Single-Bodied Torsion Springs
- Wire diameter: 0.008″ – 0.625″
Double-Bodied Torsion Springs
- Wire diameter: 0.008″ – 0.236″
Shaped Wire Torsion Springs
Torsion Spring Manufacturing
The availability of new online, state-of-art CNC systems and other advanced machining capabilities enables skilled technicians to design, prototype and supply products that meet or exceed customer requirements. Expert technical support is augmented by quick-response product delivery and e-commerce convenience. MW Industries’ production capabilities include:
- Most bend types and orientations
- Latest CNC equipment with built-in laser or vision SPC System
- LEAN manufacturing & continuous improvement
- Packaging solutions to enhance product handling and workflow efficiency
Rapid Prototyping / Design Assistance
Our solutions approach isn’t just limited to manufacturing. We also specialize in rapid prototyping and design assistance. Working with your team, we will use the application specifications to determine how to best design and process torsion springs using state-of-the-art software. Engineers take into consideration:
- Wire dimensions and winding
- Metal materials
- Production process
- Hardening or heat treating
- Corrosion resistance
- Quality assurance
- Packaging, inventory and delivery
Using our quality assurance experts, MW Industries inspects torsion springs for fatigue and performance analysis. State-of-the-art testing equipment checks the torsion springs to ensure compliance with customer specifications. These devices measure properties such as hardness, deformation and squareness under load. Our experienced quality control team, along with the newest manufacturing systems, result in high quality torsion springs at competitive prices.
MW Industries’ business units have earned the most stringent manufacturing certifications available. That’s why 23,000 customers, across every industrial sector, in more than 35 countries turn to MW Industries to solve their spring challenges.
Lastly, our customer service, engineering, production, delivery and follow through work in tandem to prove to our customers on a daily basis that MW Industries is their best choice for torsion spring manufacturing.