What is a torsion spring?
A torsion spring is a spiral spring that applies torsional force or torque along the central axis. According to the application situation, the torsion spring can be designed to rotate clockwise or counterclockwise to determine the wind direction.
We offer a variety of inventory and standard torsion springs with equal leg lengths and oriented at different no-load angles, as well as customized torsion spring manufacturing.

The unique feature of torsion springs is that they store mechanical energy by twisting rather than stretching or compressing. This enables them to apply torque when rotating, making them an ideal choice for applications such as door closing, retraction mechanisms, and various automotive components. Their design enables them to provide a large amount of force in a compact form, making them suitable for both small and large devices. In addition, the precise engineering involved in its manufacturing process allows for customization in terms of size, material, and strength.

Twisting springs can store and release angular energy, or statically hold the mechanism in place by causing the leg to deflect around the axis of the body's centerline. They can resist twisting or rotating forces. When the spring is biased towards the preferred direction of the generated wind, this spring will reduce the diameter of the body and slightly increase the length of the body. A torsion spring is a coil spring that applies torque or rotational force. The end of the torsion spring is connected to other components, and when these components rotate around the center of the spring, the spring attempts to push them back to their original position. Although the name implies other meanings, torsion springs bear bending stress rather than torsional stress. This type of spring typically has a closed winding, but may have a pitch to reduce friction between the coils. They can resist forces applied by torsion or rotation.

Torque springs are commonly used in various applications, such as door hinges, garage doors, levers, and various types of machinery. They are also used in toys, clocks, and other consumer goods that require rotational force. The size range ranges from miniature torsion springs used for electronic devices to large torsion springs used for chair control units. Torque springs can be made of various materials, including steel, stainless steel, and other alloys, depending on specific application requirements. They are valued for their ability to provide high torque as well as their durability and long lifespan. According to the application situation, the torsion spring can be designed to run clockwise or counterclockwise to determine the wind direction.

Single coil spring and double coil spring configuration
We carefully manufacture single and double helix torsion springs with different end configurations (including straight end, offset end, and hinge end). According to your customized application requirements, the wire diameter range of the torsion spring can vary from 0.005 inches to 0.250 inches, and can be designed to rotate counterclockwise or clockwise. When designing your customized spring, we take into account the operating environment, expected lifespan, and spring load. Our design allows the torsion spring to be used in the direction of winding the coil. Usually, torsion springs are used on shafts or spindles, so when choosing the appropriate spindle size, we recommend leaving approximately 10% clearance for various deflections. If your application requires high deflection, it is recommended to reduce the spindle size to ensure proper performance.

In addition to the options of single and double torsion springs, these springs can also be ordered with hinge ends, short hook ends, short offset, straight torsion, and special ends. At Heli Spring, there is no problem with small torsion springs - the wire diameter range can be from. 008 inches to. 135 inches (. 201 to 3.4 millimeters). We use a variety of materials, including piano wire, brass, and stainless steel. High quality surface treatments include manganese phosphate, passivation, and powder coating.

The advantages of using torsion springs
Twisted springs have multiple advantages due to their unique design and characteristics. Here are some advantages of using torsion springs
Compact design
Twisting springs are usually more compact and space saving than other types of springs, such as compression springs or tension springs, and are suitable for use in situations where space is limited.
Versatility
Twisting springs have a wide range of applications and can be customized according to size, material, and design to adapt to various industries from automotive parts to industrial machinery.
Stable and controllable motion
Twisting springs provide smooth and controllable rotational motion, which is crucial when sudden or abrupt movements are not desired.
Continuous strength
Twisting springs can provide consistent and reliable force throughout the entire working range, making them suitable for situations that require constant torque or tension.
Adjustable torque
The torque output of a torsion spring can usually be adjusted by changing parameters such as wire diameter, coil diameter, or number of coils, allowing customization to meet specific requirements.
Repeating the cycle reliably
Twisted springs are highly suitable for repeated cycles as they can maintain their performance characteristics without significant performance degradation or failure.

Main applications
Twisting springs are widely used in many daily applications, such as clothespins, ratchet wheels, curtains, and other types of machine components.
Design considerations
Have you considered these factors?
Twisted spring shaft - Avoid using shafts with less than 90%, otherwise bending may occur during significant deformation.
Minimum hysteresis - application of torsion springs that require minimum hysteresis, reducing friction losses by increasing space between adjacent coils.
Twisted springs can generate surging or resonance phenomena.
Load and deflection requirements - specify the torsional spring load at a fixed angular position, rather than a fixed deflection at a free position.
Torsion spring stress bending is the main cause of torsion spring stress, and stress correction factors may need to be configured during the design phase.
When designing ends with sharp bends, the wire may be stretched or marked, which may lead to stress concentration and result in a decrease in the design stress level, possibly below the recommended level. (Note: Friction occurs at the contact point between the twisted end and the spindle, which can result in higher stress areas.)
The design method for double torsion springs and single torsion springs is the same. (Note: When designing a double torsion spring, it should be wound outward from the center, not inward from both ends.)