Product Specification

Precision Spiral Torsion Spring | High Fatigue Life OEM Factory

Product Description

The Precision Spiral Torsion Spring, also known as a clock spring or flat coil spring, is a high-performance mechanical component designed to provide rotational energy in confined axial spaces. Unlike traditional wire torsion springs, the spiral design allows the material to be wound in a single plane, offering a smooth and constant torque output throughout its deflection range.

Manufactured by the METS Team, our spiral springs are engineered for high-precision applications, such as gym equipment adjustment pins and sophisticated folding mechanisms. We use premium high-carbon steel and stainless steel alloys, combined with advanced heat-treatment techniques, to ensure a High Fatigue Life. Each spring is meticulously checked for flatness and coil spacing to eliminate internal friction, resulting in a silent and reliable "Smooth Reset" function. As a leading OEM factory, we provide the industrial-grade durability required for commercial products and heavy-duty machinery.

Key Features

• Compact & Space-Saving: The flat, planar profile allows for high torque density in mechanical assemblies where axial height is extremely limited.

• Exceptional Flatness Control: Advanced CNC winding ensures the coils remain perfectly aligned, preventing side-shift and frictional wear during operation.

• Superior Fatigue Resistance: Optimized for millions of cycles, making it ideal for high-frequency use in fitness and automotive sectors.

• Consistent Torque Delivery: Provides a predictable and linear torque curve for precise control of adjustment knobs and levers.

• High-Quality Surface Finish: Available with anti-rust oil, black oxide, or zinc plating to suit various operating environments.

Technical Parameters

Industrial Applications

Our spiral torsion springs are critical components in a wide range of precision-driven industries:

• Fitness & Gym Equipment: Specifically used for pop-pin adjustment mechanisms, seat sliders, and folding frames to provide a reliable auto-reset function.

• Automotive Interiors: Found in seat belt retractors, armrest hinges, and glove box dampening systems for smooth opening and closing.

• Home & Office Furniture: Integrated into folding tables, monitor arms, and reclining chair mechanisms for effortless movement.

• Tools & Hardware: Used in tape measures, retractable tool lanyards, and high-end gardening shears.

• Medical Devices: Crucial for adjustable medical stands and surgical equipment that require compact tensioning solutions.

Customization Services

As a specialized OEM/ODM factory, we tailor every spiral spring to your specific mechanical requirements:

• Torque Tuning: We calculate the precise material thickness and width to achieve your target torque ($M$).

• End Configuration: We can create custom center slots, outer hooks, or specialized bends for seamless integration into your housing.

• Material Grading: Choose from corrosion-resistant stainless steel for outdoor use or high-tensile carbon steel for maximum cost-efficiency.

• Coil Gap Design: We offer both contact (friction-based) and non-contact (frictionless) spiral designs depending on your noise and force requirements.

Support and Services

• Engineering Consultation: Our team assists in spring rate calculations and material selection during your R&D phase.

• Rapid Prototyping: Small-batch samples are produced within 7-10 days for immediate performance testing.

• Cycle Testing: In-house fatigue testing rigs can simulate years of use to validate the durability of your custom spring.

Packing and Shipping

• Packaging Details: Individually separated in trays or packed in anti-rust paper to prevent entanglement and corrosion.

• Outer Pack: Robust corrugated export cartons with palletization options for large orders.

• Global Logistics: Reliable export services via Sea (LCL/FCL), Air, or Express (DHL/FedEx/UPS) with full tracking and documentation.

FAQ

Q: What information do you need for a custom spiral spring quote?

A: Ideally, we need the material type, wire dimensions (thickness and width), outside diameter, and the required torque at a specific angle.

Q: Can you help us replace a round wire spring with a spiral spring for a smaller design?

A: Yes! Our engineering team can help re-calculate the force requirements to transition your design into a space-saving spiral configuration.

Q: Do your spiral springs suffer from "set" or permanent deformation?

A: By using high-quality oil-tempered materials and proper heat treatment, our springs maintain their shape and tension over long-term use within their rated deflection.

Q: What is the typical MOQ for OEM orders?

A: Our MOQ usually starts at 500-1,000 units for production runs, but we support small batches for initial prototyping.