Atlas Microtech SARL

Swiss Technology

WHO ARE WE?

Spring Science Specialists

Atlas Microtech, founded in 2006, is a manufacturing company specializing in the production of springs, located in Porrentruy, in the Jura region, at the heart of the watchmaking industry. In partnership with Metalab, a renowned laboratory known for its expertise in material study and characterization, we have expanded our activities to include the manufacturing of spiral springs and barrel springs. These components play a strategic role in the mechanism of mechanical watches.

barrel springs

The mainspring is the centerpiece of the watch movement, storing and releasing the energy of the mechanical watch. At Atlas Microtech, we provide high-precision manufacturing to ensure performance and reliability.

flat springs

A key element in the regulation of a watch, the flat balance spring plays an essential role in the precision of the movement. Our balance springs, tested and chronometer-certified (COSC), offer an optimal thermo-elastic constant (CTE). Thanks to our mastery of the manufacturing process, we guarantee perfect reproducibility of each part.

SHAPED Srings

Spherical and cylindrical balance springs provide improved performance in terms of isochronism and aesthetics. Tested and certified chronometers (COSC), they have an optimal thermo-elastic constant (CTE). Our manufacturing process guarantees perfect reproducibility, ensuring identical mechanical and dimensional characteristics for each part.

barrel springs

At Atlas Microtech, we master every step of the manufacture of barrel springs, from the design of the tooling to the final production. Thanks to our expertise in wire drawing, rolling and manufacturing, we produce barrel springs of extreme precision, adapted to the requirements of watchmaking. The barrel spring is the "energy reservoir" of a mechanical watch movement and is essential to ensure the performance of the mechanism.

We manufacture two types of barrel springs:

The automatic winding barrel spring, which is wound by means of an oscillating weight device.
The manual winding barrel spring, which is raised by the rotation of the crown.

The material used for our barrel springs is Nivaflex.

Automatic barrel spring

MANUAL barrel spring

Manual mainspring

We also offer wire drawing services for coils with different diameters, as well as the production of shell laces, tailored to the specific needs of our customers:

Coil of drawn wire Shelled springs

All barrel springs manufactured at Atlas Microtech undergo rigorous quality control, including verification of cleanliness, uniformity, thickness and height of the spring. These requirements allow us to ensure optimal performance and impeccable reliability.

We also conduct extensive performance tests, such as fatigue testing, to ensure the durability and effectiveness of our springs. Thanks to this meticulous work and our know-how, we now supply the greatest Swiss watchmaking houses.

For any request relating to mainsprings, please complete the form below: form

Winding and disarming curve of an automatic mainspring.

flat springs

We master every step of the flat spring manufacturing process, from tool design to final production. Thanks to our expertise in drawing, rolling, and manufacturing, we guarantee high-precision products tailored to the requirements of watchmaking and other technical applications.

Here are the different stages of our manufacturing process:

1. Wire drawing

Wire drawing is the first step in our manufacturing process. Carried out in-house, it consists of reducing the diameter of the metal wire with great precision. This technique allows us to prepare a quality raw material, ready for the next steps of rolling and manufacturing flat balance springs

2. Wire rolling

After wire drawing, rolling is a key step in wire shaping. Produced in-house, it makes it possible to obtain a belt with precise dimensions, with a perfectly controlled thickness and width, thus ensuring optimal mechanical properties for the rest of the process.

3. Shaping the balance spring

The last step is to form the balance spring from the rolled strip. Carried out in-house, this step allows the wire to be wound with great precision to obtain the desired geometry. The strict control of this step guarantees the mechanical performance and isochronism of the flat balance springs.

FINAL PRODUCT

Once the flat spring is formed, it undergoes rigorous testing to ensure it meets the required specifications. Thanks to our expertise and controlled manufacturing process, we produce fully reproducible flat springs, providing consistent precision and optimal performance with each production. Each piece is carefully inspected to ensure its quality and long-term reliability.

For any request relating to the flat springs, please fill in the contcat form contact contact form

sHAPED SPRINGS

Finally, we master the manufacturing of several types of shaped springs, including spherical and cylindrical springs as shown below. As with our other springs, we carry out the entire manufacturing process in-house, from drawing and rolling to final production. We work with our own alloy, Nivarox, as well as alloys developed according to our clients' specifications, ensuring performance that meets the strictest requirements.

This complete mastery allows us to guarantee impeccable quality and perfect repeatability: each shaped spring exhibits the same mechanical and dimensional characteristics, regardless of the quantity produced.

cylindrical springs

Unlike traditional balance springs, the cylindrical balance spring does not oscillate on a horizontal plane, but expands and contracts by following a helical rotation along a vertical axis, like the thread of a screw. This unique geometry offers a major advantage: a perfectly concentric and symmetrical development, thus optimizing the regularity and precision of the movement.

Spherical SPRINGS

The spherical springs combine refined aesthetics with optimized performance. Their unique design allows for improved isochronism compared to flat balance springs, ensuring increased movement precision. Our pieces, recognized for their quality and impeccable finish, have been integrated into high-end calibres from a prestigious Swiss watch manufacturer.

We also offer a coloring option for the springs. Spherical and cylindrical springs can be tinted in various shades, such as purple or golden yellow, without altering their physical and mechanical properties. This customization combines aesthetics and performance to meet the demands of the most refined timepieces. Here are some examples of colorations we can achieve for a spherical spring:

cylindrical springs

Purple

GOLD blue PURPLE

Here is an overview of a spherical balance spring integrated into a watch movement, illustrating its unique design and its impact on the precision of the mechanism:

For any request relating to the flat springs, please fill in the contcat form contact contact form

Research and Development Projects

Innovation is at the heart of our know-how. We conduct research and development projects to optimize the performance of our springs and explore new technical solutions. Thanks to our expertise in materials and manufacturing processes, we design ever more high-performance balance springs and mainsprings, adapted to the most demanding requirements of watchmaking.

An example of our ongoing research

To reduce the magnetic sensitivity of nickel-based alloys and strengthen their impact resistance, we are developing new paramagnetic alloys. These advances improve the performance and reliability of high-precision watch components.