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This is a genuine Cartier automatic winding component (Automatic Wheel) for the Caliber 1847 MC movement, typically referring to the reversing wheel or automatic wheel within the automatic module. Working in conjunction with the oscillating weight (rotor), this component enables efficient bi-directional automatic winding, converting wrist motion into energy stored in the mainspring barrel. As an original factory part, it is the ideal replacement for watchmakers to restore proper automatic winding function and resolve issues of reduced winding efficiency during service or repair.
Genuine Cartier Part – Swiss factory-original for Caliber 1847 MC, not a copy or generic replacement.
Bi-Directional Winding Core – Works with a second reversing wheel to convert rotor motion into winding energy regardless of wrist movement direction.
Ball-Bearing Rotor Design – Smooth, low-friction rotation for efficient energy transfer and reduced wear.
Essential for Service – Replace when automatic winding efficiency drops, rotor feels rough, or unusual noises occur.
Wide Compatibility – Suitable for all Cartier watches powered by the 1847 MC movement, including Santos, Ballon Bleu, Tank Must, and Pasha collections.
| Parameter | Details |
|---|---|
| Part Name | Automatic Wheel (Automatic Winding Component / Reversing Wheel) |
| Compatible Movement | Cartier Caliber 1847 MC (in-house automatic) |
| Movement Diameter | 25.6 mm |
| Movement Height | ~3.7–3.8 mm |
| Jewels | 23 |
| Beat Rate | 28,800 vph (4 Hz) |
| Power Reserve | ~40–42 hours |
| Rotor Type | Ball-bearing, bidirectional winding |
| Country of Origin | Switzerland |
| Condition | Brand new, genuine |
Compatible Models：This automatic wheel is used in all watches powered by the in-house Cartier Caliber 1847 MC.
Key Collections：Clé de Cartier (launch platform), Santos de Cartier, Ballon Bleu de Cartier, Tank Must, Pasha de Cartier, Ronde Croisière de Cartier.
Service Scenarios：Repair of failed automatic winding, abnormal rotor operation, low amplitude, or reduced winding efficiency；replacement of worn or aged automatic components during full movement service.
1. Is this a genuine Cartier part?
Yes. This is a Swiss factory-original part for Caliber 1847 MC, not a third-party copy.
2. What are the symptoms of a damaged automatic wheel?
Common symptoms include: the rotor spins normally but automatic winding is very poor (low power reserve after wearing), manual winding works but automatic does not, or unusual grinding/clicking noises during automatic winding.
3. What should I pay attention to during installation?
Automatic wheels work in pairs. Clean the train and inspect the other reversing wheel before installation. Use recommended lubrication (special grease) and strictly follow the Cartier technical guide. Professional installation is strongly recommended.
4. Should I replace both reversing wheels at the same time?
It is strongly recommended to replace them as a pair. The two wheels together form the complete bidirectional winding system, and wear is usually similar. Replacing both ensures long-term reliability and optimal winding efficiency.
5. Which specific watch models is this part compatible with?
This part is compatible with all watches powered by the Caliber 1847 MC, including but not limited to Santos (e.g., WSSA0029), Ballon Bleu (e.g., WSBB0027), Tank Must (e.g., WSTA0053), Pasha (e.g., WSPA0026), and Clé de Cartier.
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