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The ETA 2671-415 Ratchet Wheel is a genuine Swiss-made component for the ETA 2671 automatic movement family . As an essential part of the automatic winding system, this ratchet wheel works in conjunction with the reverser and winding pinion to transmit winding motion from the rotor to the mainspring, enabling efficient self-winding for the movement’s ~38-hour power reserve. This brand new original part is essential for watchmakers restoring proper automatic winding function when the original component becomes worn or damaged.
Genuine ETA part – authentic Swiss-made component for the ETA 2671 movement
Nickel-plated finish – ensures corrosion resistance and durability
Automatic winding system component – works with reverser and winding pinion to transmit rotor motion
Essential for self-winding – enables efficient automatic winding for the ~38-hour power reserve
Direct replacement – drop-in replacement for worn or damaged ratchet wheels
Part Number: 2671-415 / 415
Article Number: 20
Finish: Nickel-plated
Compatible Movements: ETA 2671 (also used in Movado 485 and other calibers based on ETA 2671)
Movement Diameter: 17.2 mm (7¾”’)
Movement Height: 4.80 mm
Jewels: 17/21/23/25 (varies by version)
Frequency: 28,800 vph (4 Hz)
Power Reserve: ~38 hours
Origin: Switzerland (ETA factory part)
Condition: Brand new
Service and overhaul of ETA 2671 and compatible movements
Automatic winding system repair – replacing worn or damaged ratchet wheels
Winding efficiency restoration – resolving poor self-winding performance
Suitable for professional watchmakers and experienced repair technicians
1. Is this a genuine ETA part?
Yes, this is a genuine ETA factory part (reference 2671-415), made in Switzerland. It is listed in official parts documentation and by authorized suppliers as “Ratchet Wheel for ETA 2671 – Nickel Plated” .
2. Which movements is this ratchet wheel compatible with?
This ratchet wheel is specifically designed for the ETA 2671 movement and compatible calibers based on it. ETA 2671 is a 17.2 mm automatic movement widely used in ladies’ watches from brands including Tissot, Mido, Longines, Tudor, and Movado .
3. What is the function of the ratchet wheel?
The ratchet wheel is part of the automatic winding system that works with the reverser and winding pinion to transmit winding motion from the rotor to the mainspring. It features a nickel-plated finish for durability and corrosion resistance .
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