Golden Circular Automatic Rotor for NH35

WatchesHome Semi-Circular Solid Automatic Rotor – Balanced & Efficient Winding

The Semi-Circular Solid Automatic Rotor is an in-house designed winding component for automatic mechanical movements. It focuses on reliability and efficiency while maintaining a clean appearance through an exhibition caseback. As a result, it works well for watches that highlight their movement design.

The rotor follows a precise half-circle structure with a solid center, which helps maintain balanced weight distribution and stable rotation. Meanwhile, the surface features fine radial brushing that spreads outward from the center. This subtle sunburst texture catches light evenly and therefore creates a refined mechanical look. In addition, the restrained finishing complements skeleton, open, or semi-open dial designs without drawing unnecessary attention away from the movement.

We manufacture the rotor from high-grade brass and apply a durable rose gold PVD coating. Consequently, the component remains resistant to wear while maintaining a warm metallic tone. At the same time, the solid construction captures energy efficiently from normal wrist motion and supports reliable bidirectional winding. As a result, the movement maintains stable power reserve and dependable timekeeping during everyday use.

Key benefits include several practical advantages. First, the solid center improves balance and reduces vibration during rotation. Second, the rotor remains clearly visible through exhibition casebacks and therefore adds mechanical character without visual clutter. Moreover, the rose gold PVD surface provides both durability and a premium appearance. Likewise, compatibility with common calibers such as NH35 and Miyota 9015 allows easy integration into many watch designs.

Contact us for samples, pricing, or to discuss how we can adapt this rotor for your movement or upcoming collection.