Custom Torsion Springs for Precise Rotational Force Applications

Custom Torsion Spring Manufacturer

JL Springs manufactures custom torsion springs for hinges, switches, latches, clips, and a wide range of mechanical assemblies. We produce to drawing, sample, or technical specification for OEM, industrial, and export applications.

Specifications

Custom Torsion Spring Specifications

0.2 mm to 6 mm

Wire Diameter：

Material Options：

Stainless steel, music wire, carbon steel, and alloy spring steel, copper wire, iron wire, aluminum wire

Coil Diameter：

Inner diameter and outer diameter can be produced in a wide range of custom sizes

Leg Configuration:

Custom leg length, leg angle, and end form to match your assembly design

Winding Direction:

Available in left-hand or right-hand winding

Surface Finish:

Plain, zinc plated, nickel plated, powder coated, and other finishes upon request

End Types:

straight torsion ends，straight offset ends，hinge ends ，hook and loop ends ，double torsion ，and custom wire forming ends

View a selection of custom torsion springs manufactured for OEM, industrial, fitness equipment, automotive, and hardware applications.

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Understanding a Torsion Spring Drawing

This guide helps buyers and engineers identify the key dimensions and configuration details commonly required for custom torsion spring quotation and production. It shows the standard torsion spring parameters and provides six common leg-end references for easier communication and specification.

Hing Ends

Special Ends

Straight Ends

Double Torsion

Short Hook Ends

Straight Legs

Quotation Information

Material
Wire Diameter
Outside Diameter / Inside Diameter
Body Length or Number of Coils
Leg Length
Leg Angle
Winding Direction
Spring Type: Single or Double Torsion
Surface Finish
Quantity / Application

Small-Batch Customization

Low-volume support

Dedicated Project Support

Sales + technical team

Fatigue Life & Durability

Built for repeated use

Fast Sampling & Revisions

3–5 working days

Surface Finish Options

Corrosion resistance

Stable Mass Production

Batch consistency

What are torsion springs?

Torsion springs are designed to store and release rotational energy. When their legs are twisted, they generate torque to return, hold, or move mechanical components. They are commonly used in hinges, switches, latches, clips, covers, and compact mechanisms requiring controlled rotational force or angular movement.

Material Selection for Torsion Springs

Material selection depends on the required strength, fatigue life, corrosion resistance, working environment, and cost target. Common materials include stainless steel, music wire, carbon steel, and copper wire, iron wire, aluminum wire, alloy spring steel.

For outdoor, humid, or corrosion-sensitive applications, stainless steel or suitable surface treatment may be recommended. For applications requiring higher strength or repeated movement, material performance and fatigue resistance should be considered during the design stage.

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Machine Setup & Production

After the drawing, sample, or technical specification is confirmed, our technicians set up the forming equipment according to wire diameter, coil diameter, winding direction, leg length, leg angle, and spring structure.

During production, the machine setup is adjusted to maintain stable forming accuracy and consistent spring geometry. For custom torsion springs, experienced setup is important because small changes in leg angle, coil size, or winding direction can affect assembly fit and torque performance.

Quality Inspection & Packing

Finished torsion springs are inspected for key dimensions, winding direction, leg geometry, spring angle, surface condition, and batch consistency. For functional projects, sample approval can be arranged before mass production to confirm fit, torque, and assembly performance.

After inspection, products are packed according to export and delivery requirements. Proper packing helps protect spring shape, surface finish, and product quality during storage and transportation.