Torsion Spring Terminology
2023-08-18
Single Torsion Spring
Total Coils:
The number of coils in the spring when it is under no load.
Active Coils:
The number of coils in the spring that are compressed or extended when it is under load.
Wire Diameter:
The diameter of the wire used to make the spring, which is typically specified in inches or millimeters.
Radius:
The bend radius at which a load is applied to a leg. The radius is usually assumed to be equal to ½ the leg length.
Outer Diameter:
The outer diameter of the spring, which is the diameter of the circle that the wire makes when it is wound into a spiral.
Inner diameter:
The inner diameter of the spring, which is the diameter of the circle that the wire makes when the spring is not under any load.
Double Torsion Spring
Angular Deflection:
The angle of rotation as measured from the free position to the installed, intermediate or final positions.
Free Angle:
The angle between the arms of a torsion spring when the spring is in the unloaded position.
Leg Length:
The length of the straight sections at each end of the spring, which are used to attach the spring to other components.
Mandrel:
A rod or shaft over which a torsion spring operates.
Maximum Deflection:
The maximum amount that the spring can be twisted before it reaches its elastic limit and starts to deform permanently.
Spring Rate:
The amount of torque that the spring exerts for a given angle of twist, which is usually measured in units of torque per unit of angle (such as Nm/degree or lb-in/radian).
Torque:
A twisting action in torsion springs which produces rotation, equal to the load multiplied by the distance from the load to the axis of the spring body.
Material Type:
The type of material used to make the spring, which can affect its strength, durability, and other properties.
Huayi-group offers extensive custom compression spring capabilities and engineering support from design through production. Contact us at any phase of your project for expert assistance and technical support.