TAOMSUN measures copper hairspring, which is made by cold drawing, rolling, winding, and shaping metal filaments. It is a precision elastic element that can generate reactive torque. The products cover various types such as conductive hairspring, electrical measurement indicator hairspring, mechanical instrument hairspring, tachometer hairspring, etc., with a size range of 5-300 mm. The materials available include brass strip, beryllium green copper wire, stainless steel wire, thermal bimetallic strip, brass wire, pure copper wire, and bronze wire. The balance spring has good elastic properties, small elastic hysteresis, low temperature coefficient and resistance coefficient, and has anti magnetic and anti-corrosion properties. Design and manufacture according to user requirements or drawings. Regular products will be shipped within one week. Overseas sales/technical support are provided by METICULAB (Korea).

TAOMSUN Measuring Copper Hairspring & Conductive Hairspring – Custom Precision Hairsprings for Electrical Meters & Tachometers

Brand: TAOMSUN ｜ Size Range: 5–300 mm ｜ Materials: Brass Strip / Beryllium Copper Wire / Stainless Steel Wire / Thermal Bimetal Strip / Brass Wire / Pure Copper Wire / Bronze Wire ｜ Origin: China ｜ Overseas Sales / Tech Support: METICULAB (Korea) ｜ ISO 9001 · Precision Machining

A measuring copper hairspring is a precision spiral spring formed from fine metal wire through cold drawing, rolling, coiling and setting, with a defined shape and spiral curve. It is an elastic component that generates a restoring torque, with a size range of 5–300 mm. It offers a quantifiable elastic characteristic, low elastic hysteresis, a small temperature coefficient (thermoelastic coefficient) and a small resistance coefficient, as well as excellent anti-magnetic and corrosion-resistant performance.

📷 Product Gallery

1. Product Structure & Features

2. Hairspring Type Codes & Marking

Depending on function and installation requirements, hairsprings are generally divided by structure into hairsprings and hairsprings with copper base; hairsprings with copper base are available in clockwise and counterclockwise versions.

We can also design and manufacture according to customer requirements or drawings.

Hairspring marking consists of: standard number, material grade, hairspring copper base inner diameter, hairspring copper base outer diameter, hairspring torque, hairspring outer radius, hairspring class, and hairspring code.

3. Hairspring Materials

4. Main Functions

Conductive hairsprings and electrical measuring instrument hairsprings are mainly used in electrical measuring instruments: they build up the restoring torque while conducting current into the moving system, and are also used in timing mechanisms to generate the oscillating system. Tachometer hairsprings are used to produce the restoring torque of the magnetic-induction moving system of the instrument, providing core driving force and regulation support for the precise operation of various instruments.

5. Mechanical Instrument Hairspring Specifications (Typical)

For the complete specification table, marking rules and detailed parameters, please contact our sales team.

6. Suitable Applications

Widely used in precision timekeeping instruments such as mechanical watches and electronic watches, laying the foundation for accurate timekeeping; in inertial navigation equipment in the aerospace field, ensuring accurate and reliable navigation data; and in electronic measuring instruments, supporting high-precision electrical measurement and signal detection functions to meet the stringent requirements of precision instruments across different fields.

7. Product Advantages

8. Delivery Time

🎯 Application Fields

🏭 About TAOMSUN

The above specifications are typical values and may vary with custom configurations. For OEM / ODM customization, non-standard sizes or special requirements, please contact our sales team. Overseas customers can obtain Korean / English technical support from METICULAB™ (Korea).