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Double Torsion Spring with High Torque Performance, Custom Spring Geometry, and Corrosion-Resistant Material Options

Double Torsion Spring with High Torque Performance, Custom Spring Geometry, and Corrosion-Resistant Material Options

Detail Information
Place of Origin
CN
Brand Name
METS
Part Name:
Double Torsion Spring
Material:
Stainless Steel (e.g., SUS304) / Carbon Steel (e.g., Music Wire SWC)
Surface Finish:
Zinc Plated / Passivated / Oil Coated / Natural Finish
Working Torque (T):
Target Load/torque Requirements (e.g., N·mm At Specified Angle)
Winding Direction:
Left-hand & Right-hand (LH/RH)
Leg Length (L_1, L_2):
Length Of End Legs / Center Bridge Length
Highlight:

High Torque Performance Double Torsion Spring

,

Custom Spring Geometry Double Coil Spring

,

Corrosion-Resistant Material Options Industrial Torsion Spring

Product Description
Double Torsion Spring | High Torque Industrial Spring

The Double Torsion Spring is a precision-manufactured mechanical spring designed to generate controlled rotational force from two connected coil sections. Unlike a conventional single torsion spring, a double torsion spring features two coils connected by a central section, allowing torque to be applied simultaneously or transferred through both spring bodies. This design provides a compact and efficient solution for mechanisms requiring balanced rotational force and reliable return movement.

Our high torque industrial springs are manufactured from high-quality spring materials using precision wire forming and spring coiling processes. Depending on the application, available materials include stainless steel, spring steel, carbon steel, and other suitable alloys. Material selection can be optimized according to required torque, fatigue resistance, corrosion resistance, operating temperature, and working environment.

The double torsion spring can be engineered with customized wire diameter, coil diameter, number of coils, leg length, leg angle, center connecting section, winding direction, and working angle. These options allow the spring to be integrated into complex mechanical assemblies where two-point force distribution or synchronized rotational movement is required.

Precision manufacturing helps maintain consistent coil geometry, dimensional accuracy, and torque characteristics across production batches. Properly designed double torsion springs can provide reliable performance during repeated operating cycles, making them suitable for industrial machinery, automotive components, hinges, clamps, actuators, switches, appliance mechanisms, and other mechanical systems.

For OEM projects, we provide customized double torsion spring manufacturing based on customer drawings, CAD files, technical specifications, or existing samples. From initial engineering review and prototype development to mass production and quality inspection, we provide an integrated spring manufacturing solution for industrial customers.

Double Torsion Spring product photo showing precision coil design and construction
Key Features
  • Double-Coil Structure: The two connected coil sections provide a balanced spring structure and allow rotational force to be distributed through multiple working points.
  • High Torque Performance: The spring can be designed to deliver high rotational torque within the specified working angle, making it suitable for demanding mechanical mechanisms.
  • Precision Wire Forming: Advanced wire forming and coiling processes help achieve consistent coil dimensions, leg geometry, and overall spring configuration.
  • Custom Spring Geometry: Wire diameter, coil diameter, coil spacing, number of coils, leg length, leg angle, center section, and winding direction can be customized.
  • High Fatigue Resistance: Proper material selection and controlled manufacturing processes help the spring withstand repeated loading and unloading cycles.
  • Corrosion-Resistant Material Options: Stainless steel options such as SUS301, SUS304, and SUS316 can be selected for applications exposed to moisture, chemicals, or outdoor environments.
  • Compact Mechanical Design: The double torsion configuration can provide substantial rotational force within a relatively compact installation space.
  • OEM / ODM Manufacturing: Custom springs can be manufactured according to customer drawings, samples, CAD files, or application requirements.

Technical Specifications
Parameter Specification
Product Name Double Torsion Spring
Spring Type Double Torsion / Double Coil Spring
Material Stainless Steel / Spring Steel / Carbon Steel / Music Wire
Stainless Steel Grade SUS301 / SUS304 / SUS316
Wire Diameter Approx. 0.1-60 mm, Customized
Coil Outer Diameter Customized
Coil Inner Diameter Customized
Coil Length Customized
Number of Coils Customized
Center Connecting Section Customized
Leg Length Customized
Leg Angle Customized
Winding Direction Left-Hand / Right-Hand / Customized
Working Angle Customized
Torque Customized
Spring Rate Customized
Surface Treatment Polishing / Plating / Coating / Customized
Heat Treatment Available as Required
Manufacturing Process Precision Wire Forming / Spring Coiling
Dimensional Tolerance According to Drawing Requirements
Application Industrial / Automotive / Electrical / Mechanical
Production Volume Prototype to Mass Production
OEM / ODM Available

Technical specifications can be customized according to the spring design, working conditions, torque requirements, and customer drawings.


Applications
  • Industrial Machinery: Double torsion springs are widely used in industrial machinery and mechanical equipment where controlled rotational force, return movement, or synchronized mechanical action is required. They can be integrated into levers, covers, clamps, actuators, and positioning mechanisms.
  • Automotive Components: The compact double-coil structure makes these springs suitable for automotive mechanisms such as latches, hinges, pedals, locking systems, handles, and other components requiring reliable rotational return force.
  • Hinges and Covers: Double torsion springs can provide controlled opening and closing force for mechanical covers, access doors, equipment panels, lids, and hinged assemblies.
  • Clamps and Gripping Mechanisms: The two-sided spring structure can help distribute force across mechanical clamps and gripping systems, supporting reliable opening and closing actions.
  • Electrical Equipment: Precision double torsion springs can be used in switches, circuit mechanisms, connectors, control devices, and other electrical equipment requiring repeatable rotational movement.
  • Household Appliances: These springs are suitable for appliance mechanisms such as doors, lids, handles, locks, switches, and other components where controlled return force is required.
  • Automation Equipment: Double torsion springs can be integrated into automated machinery and mechanical control systems to provide positioning force, return movement, and mechanical assistance during repetitive operating cycles.
  • Hardware Products: Customized double torsion springs are also suitable for tools, furniture hardware, locks, clamps, clips, and other products requiring compact high-torque spring performance.

Customization Options

We provide comprehensive custom double torsion spring manufacturing based on customer drawings, samples, CAD files, or application requirements.

Wire Diameter

Wire diameter can be customized according to the required torque, spring rate, fatigue life, and available installation space.

Coil Dimensions

The following dimensions can be customized:

  • Coil outer diameter
  • Coil inner diameter
  • Coil length
  • Number of active coils
  • Coil spacing
  • Distance between the two coils
Center Section Design

The central connecting section can be customized according to the installation structure and required force distribution.

Leg Configuration

Spring legs can be manufactured in different configurations, including:

  • Straight legs
  • Extended legs
  • Offset legs
  • Hooked legs
  • Special-shaped legs
Leg Angle

Free leg angle, working angle, leg orientation, and relative position between the two spring coils can be customized.

Material Selection

We can recommend appropriate materials according to:

  • Required torque
  • Fatigue cycle requirements
  • Corrosion resistance
  • Operating temperature
  • Mechanical strength
  • Installation environment
Surface Treatment

Optional surface treatments include polishing, plating, coating, and other customized treatments according to the application.

Prototype to Mass Production

Our development process can include:

  1. Drawing or sample evaluation
  2. Spring structure review
  3. Material selection
  4. Prototype manufacturing
  5. Torque and dimensional testing
  6. Design adjustment
  7. Production process setup
  8. Mass production
  9. Final inspection

Support and Services
Engineering Support

Our engineering team can review technical drawings and provide suggestions regarding wire diameter, coil dimensions, material selection, working angle, torque, and manufacturing feasibility.

OEM / ODM Service

We manufacture customized double torsion springs according to customer drawings, CAD files, samples, or specific application requirements.

Prototype Development

Prototype and small-batch manufacturing are available for new projects, helping customers verify spring geometry and mechanical performance before mass production.

Material Consultation

We help select suitable spring materials based on mechanical load, operating environment, corrosion resistance, fatigue requirements, and temperature conditions.

Quality Control

Quality inspection may include:

  • Wire diameter inspection
  • Coil diameter inspection
  • Coil spacing inspection
  • Overall dimension inspection
  • Leg length inspection
  • Leg angle inspection
  • Free angle inspection
  • Torque testing
  • Spring rate testing
  • Surface inspection
Mass Production Support

After design approval, controlled production processes can be established to ensure stable dimensions and repeatable performance for recurring OEM orders.


Packing and Shipping
Professional Packaging

Double torsion springs are carefully packed to minimize deformation, corrosion, contamination, and physical damage during transportation.

Typical packaging methods include:

  • PE bags
  • Plastic trays
  • Protective separators
  • Inner cartons
  • Export-grade cartons
  • Wooden cases for large-volume shipments

Packaging can be customized according to spring dimensions, order quantity, and customer requirements.

Shipping Options

We provide flexible international shipping solutions:

  • Express Shipping: Suitable for prototypes and small orders
  • Air Freight: Suitable for urgent shipments
  • Sea Freight: Suitable for large-volume OEM orders

Export packaging and shipping arrangements can be coordinated according to destination, order volume, and delivery requirements.


Frequently Asked Questions
1. What is a double torsion spring?

A double torsion spring consists of two connected coil sections designed to generate rotational force. It is commonly used when balanced or synchronized torque is required at multiple working points.

2. What is the difference between a single and double torsion spring?

A single torsion spring generally has one coil and one primary torque-producing structure. A double torsion spring has two connected coils, allowing it to provide force through two spring sections and making it suitable for applications requiring balanced rotational force.

3. Can you manufacture custom double torsion springs?

Yes. We manufacture custom double torsion springs based on drawings, samples, CAD files, or application requirements.

4. What materials are available?

Common materials include stainless steel, spring steel, carbon steel, and music wire. SUS301, SUS304, and SUS316 stainless steel options are available for applications requiring improved corrosion resistance.

5. Can you produce high-torque double torsion springs?

Yes. High-torque designs can be developed by optimizing wire diameter, coil diameter, number of coils, material, working angle, and spring geometry.

6. What dimensions can be customized?

Wire diameter, coil diameter, coil length, number of coils, center section dimensions, leg length, leg angle, working angle, and overall dimensions can be customized.

7. Can you manufacture stainless steel double torsion springs?

Yes. Stainless steel double torsion springs can be manufactured using SUS301, SUS304, SUS316, or other suitable stainless steel grades according to application requirements.

8. Do you provide OEM and ODM services?

Yes. We provide OEM and ODM services covering engineering review, prototype development, sample production, testing, quality inspection, and mass production.

9. Can you manufacture springs based on an existing sample?

Yes. Customers can provide an existing spring sample for evaluation. Our engineering team can review its dimensions and structure for customized manufacturing.

10. What information is needed for a quotation?

For an accurate quotation, please provide material, wire diameter, coil diameter, number of coils, leg dimensions, working angle, torque requirements, quantity, drawings or samples, and application information when available.

11. What is the MOQ?

MOQ depends on the spring design, material, dimensions, tooling or process requirements, and order quantity. Prototype and small-batch orders can be discussed.

12. How do you ensure consistent quality?

We inspect critical parameters such as wire diameter, coil dimensions, leg geometry, working angle, overall dimensions, and torque to maintain consistent production quality.


Why Choose Our Double Torsion Springs?

Our Double Torsion Spring solutions combine precision wire forming, high-quality spring materials, controlled manufacturing processes, and comprehensive inspection. The double-coil structure provides an effective solution for applications requiring balanced rotational force, synchronized movement, and compact mechanical performance.

Whether you need high torque double torsion springs, stainless steel double torsion springs, custom industrial torsion springs, automotive torsion springs, or OEM mechanical springs, we can provide customized manufacturing from prototype development to high-volume production.

Products
PRODUCTS DETAILS
Double Torsion Spring with High Torque Performance, Custom Spring Geometry, and Corrosion-Resistant Material Options
Detail Information
Place of Origin
CN
Brand Name
METS
Part Name:
Double Torsion Spring
Material:
Stainless Steel (e.g., SUS304) / Carbon Steel (e.g., Music Wire SWC)
Surface Finish:
Zinc Plated / Passivated / Oil Coated / Natural Finish
Working Torque (T):
Target Load/torque Requirements (e.g., N·mm At Specified Angle)
Winding Direction:
Left-hand & Right-hand (LH/RH)
Leg Length (L_1, L_2):
Length Of End Legs / Center Bridge Length
Highlight

High Torque Performance Double Torsion Spring

,

Custom Spring Geometry Double Coil Spring

,

Corrosion-Resistant Material Options Industrial Torsion Spring

Product Description
Double Torsion Spring | High Torque Industrial Spring

The Double Torsion Spring is a precision-manufactured mechanical spring designed to generate controlled rotational force from two connected coil sections. Unlike a conventional single torsion spring, a double torsion spring features two coils connected by a central section, allowing torque to be applied simultaneously or transferred through both spring bodies. This design provides a compact and efficient solution for mechanisms requiring balanced rotational force and reliable return movement.

Our high torque industrial springs are manufactured from high-quality spring materials using precision wire forming and spring coiling processes. Depending on the application, available materials include stainless steel, spring steel, carbon steel, and other suitable alloys. Material selection can be optimized according to required torque, fatigue resistance, corrosion resistance, operating temperature, and working environment.

The double torsion spring can be engineered with customized wire diameter, coil diameter, number of coils, leg length, leg angle, center connecting section, winding direction, and working angle. These options allow the spring to be integrated into complex mechanical assemblies where two-point force distribution or synchronized rotational movement is required.

Precision manufacturing helps maintain consistent coil geometry, dimensional accuracy, and torque characteristics across production batches. Properly designed double torsion springs can provide reliable performance during repeated operating cycles, making them suitable for industrial machinery, automotive components, hinges, clamps, actuators, switches, appliance mechanisms, and other mechanical systems.

For OEM projects, we provide customized double torsion spring manufacturing based on customer drawings, CAD files, technical specifications, or existing samples. From initial engineering review and prototype development to mass production and quality inspection, we provide an integrated spring manufacturing solution for industrial customers.

Double Torsion Spring product photo showing precision coil design and construction
Key Features
  • Double-Coil Structure: The two connected coil sections provide a balanced spring structure and allow rotational force to be distributed through multiple working points.
  • High Torque Performance: The spring can be designed to deliver high rotational torque within the specified working angle, making it suitable for demanding mechanical mechanisms.
  • Precision Wire Forming: Advanced wire forming and coiling processes help achieve consistent coil dimensions, leg geometry, and overall spring configuration.
  • Custom Spring Geometry: Wire diameter, coil diameter, coil spacing, number of coils, leg length, leg angle, center section, and winding direction can be customized.
  • High Fatigue Resistance: Proper material selection and controlled manufacturing processes help the spring withstand repeated loading and unloading cycles.
  • Corrosion-Resistant Material Options: Stainless steel options such as SUS301, SUS304, and SUS316 can be selected for applications exposed to moisture, chemicals, or outdoor environments.
  • Compact Mechanical Design: The double torsion configuration can provide substantial rotational force within a relatively compact installation space.
  • OEM / ODM Manufacturing: Custom springs can be manufactured according to customer drawings, samples, CAD files, or application requirements.

Technical Specifications
Parameter Specification
Product Name Double Torsion Spring
Spring Type Double Torsion / Double Coil Spring
Material Stainless Steel / Spring Steel / Carbon Steel / Music Wire
Stainless Steel Grade SUS301 / SUS304 / SUS316
Wire Diameter Approx. 0.1-60 mm, Customized
Coil Outer Diameter Customized
Coil Inner Diameter Customized
Coil Length Customized
Number of Coils Customized
Center Connecting Section Customized
Leg Length Customized
Leg Angle Customized
Winding Direction Left-Hand / Right-Hand / Customized
Working Angle Customized
Torque Customized
Spring Rate Customized
Surface Treatment Polishing / Plating / Coating / Customized
Heat Treatment Available as Required
Manufacturing Process Precision Wire Forming / Spring Coiling
Dimensional Tolerance According to Drawing Requirements
Application Industrial / Automotive / Electrical / Mechanical
Production Volume Prototype to Mass Production
OEM / ODM Available

Technical specifications can be customized according to the spring design, working conditions, torque requirements, and customer drawings.


Applications
  • Industrial Machinery: Double torsion springs are widely used in industrial machinery and mechanical equipment where controlled rotational force, return movement, or synchronized mechanical action is required. They can be integrated into levers, covers, clamps, actuators, and positioning mechanisms.
  • Automotive Components: The compact double-coil structure makes these springs suitable for automotive mechanisms such as latches, hinges, pedals, locking systems, handles, and other components requiring reliable rotational return force.
  • Hinges and Covers: Double torsion springs can provide controlled opening and closing force for mechanical covers, access doors, equipment panels, lids, and hinged assemblies.
  • Clamps and Gripping Mechanisms: The two-sided spring structure can help distribute force across mechanical clamps and gripping systems, supporting reliable opening and closing actions.
  • Electrical Equipment: Precision double torsion springs can be used in switches, circuit mechanisms, connectors, control devices, and other electrical equipment requiring repeatable rotational movement.
  • Household Appliances: These springs are suitable for appliance mechanisms such as doors, lids, handles, locks, switches, and other components where controlled return force is required.
  • Automation Equipment: Double torsion springs can be integrated into automated machinery and mechanical control systems to provide positioning force, return movement, and mechanical assistance during repetitive operating cycles.
  • Hardware Products: Customized double torsion springs are also suitable for tools, furniture hardware, locks, clamps, clips, and other products requiring compact high-torque spring performance.

Customization Options

We provide comprehensive custom double torsion spring manufacturing based on customer drawings, samples, CAD files, or application requirements.

Wire Diameter

Wire diameter can be customized according to the required torque, spring rate, fatigue life, and available installation space.

Coil Dimensions

The following dimensions can be customized:

  • Coil outer diameter
  • Coil inner diameter
  • Coil length
  • Number of active coils
  • Coil spacing
  • Distance between the two coils
Center Section Design

The central connecting section can be customized according to the installation structure and required force distribution.

Leg Configuration

Spring legs can be manufactured in different configurations, including:

  • Straight legs
  • Extended legs
  • Offset legs
  • Hooked legs
  • Special-shaped legs
Leg Angle

Free leg angle, working angle, leg orientation, and relative position between the two spring coils can be customized.

Material Selection

We can recommend appropriate materials according to:

  • Required torque
  • Fatigue cycle requirements
  • Corrosion resistance
  • Operating temperature
  • Mechanical strength
  • Installation environment
Surface Treatment

Optional surface treatments include polishing, plating, coating, and other customized treatments according to the application.

Prototype to Mass Production

Our development process can include:

  1. Drawing or sample evaluation
  2. Spring structure review
  3. Material selection
  4. Prototype manufacturing
  5. Torque and dimensional testing
  6. Design adjustment
  7. Production process setup
  8. Mass production
  9. Final inspection

Support and Services
Engineering Support

Our engineering team can review technical drawings and provide suggestions regarding wire diameter, coil dimensions, material selection, working angle, torque, and manufacturing feasibility.

OEM / ODM Service

We manufacture customized double torsion springs according to customer drawings, CAD files, samples, or specific application requirements.

Prototype Development

Prototype and small-batch manufacturing are available for new projects, helping customers verify spring geometry and mechanical performance before mass production.

Material Consultation

We help select suitable spring materials based on mechanical load, operating environment, corrosion resistance, fatigue requirements, and temperature conditions.

Quality Control

Quality inspection may include:

  • Wire diameter inspection
  • Coil diameter inspection
  • Coil spacing inspection
  • Overall dimension inspection
  • Leg length inspection
  • Leg angle inspection
  • Free angle inspection
  • Torque testing
  • Spring rate testing
  • Surface inspection
Mass Production Support

After design approval, controlled production processes can be established to ensure stable dimensions and repeatable performance for recurring OEM orders.


Packing and Shipping
Professional Packaging

Double torsion springs are carefully packed to minimize deformation, corrosion, contamination, and physical damage during transportation.

Typical packaging methods include:

  • PE bags
  • Plastic trays
  • Protective separators
  • Inner cartons
  • Export-grade cartons
  • Wooden cases for large-volume shipments

Packaging can be customized according to spring dimensions, order quantity, and customer requirements.

Shipping Options

We provide flexible international shipping solutions:

  • Express Shipping: Suitable for prototypes and small orders
  • Air Freight: Suitable for urgent shipments
  • Sea Freight: Suitable for large-volume OEM orders

Export packaging and shipping arrangements can be coordinated according to destination, order volume, and delivery requirements.


Frequently Asked Questions
1. What is a double torsion spring?

A double torsion spring consists of two connected coil sections designed to generate rotational force. It is commonly used when balanced or synchronized torque is required at multiple working points.

2. What is the difference between a single and double torsion spring?

A single torsion spring generally has one coil and one primary torque-producing structure. A double torsion spring has two connected coils, allowing it to provide force through two spring sections and making it suitable for applications requiring balanced rotational force.

3. Can you manufacture custom double torsion springs?

Yes. We manufacture custom double torsion springs based on drawings, samples, CAD files, or application requirements.

4. What materials are available?

Common materials include stainless steel, spring steel, carbon steel, and music wire. SUS301, SUS304, and SUS316 stainless steel options are available for applications requiring improved corrosion resistance.

5. Can you produce high-torque double torsion springs?

Yes. High-torque designs can be developed by optimizing wire diameter, coil diameter, number of coils, material, working angle, and spring geometry.

6. What dimensions can be customized?

Wire diameter, coil diameter, coil length, number of coils, center section dimensions, leg length, leg angle, working angle, and overall dimensions can be customized.

7. Can you manufacture stainless steel double torsion springs?

Yes. Stainless steel double torsion springs can be manufactured using SUS301, SUS304, SUS316, or other suitable stainless steel grades according to application requirements.

8. Do you provide OEM and ODM services?

Yes. We provide OEM and ODM services covering engineering review, prototype development, sample production, testing, quality inspection, and mass production.

9. Can you manufacture springs based on an existing sample?

Yes. Customers can provide an existing spring sample for evaluation. Our engineering team can review its dimensions and structure for customized manufacturing.

10. What information is needed for a quotation?

For an accurate quotation, please provide material, wire diameter, coil diameter, number of coils, leg dimensions, working angle, torque requirements, quantity, drawings or samples, and application information when available.

11. What is the MOQ?

MOQ depends on the spring design, material, dimensions, tooling or process requirements, and order quantity. Prototype and small-batch orders can be discussed.

12. How do you ensure consistent quality?

We inspect critical parameters such as wire diameter, coil dimensions, leg geometry, working angle, overall dimensions, and torque to maintain consistent production quality.


Why Choose Our Double Torsion Springs?

Our Double Torsion Spring solutions combine precision wire forming, high-quality spring materials, controlled manufacturing processes, and comprehensive inspection. The double-coil structure provides an effective solution for applications requiring balanced rotational force, synchronized movement, and compact mechanical performance.

Whether you need high torque double torsion springs, stainless steel double torsion springs, custom industrial torsion springs, automotive torsion springs, or OEM mechanical springs, we can provide customized manufacturing from prototype development to high-volume production.

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