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This is a genuine Cartier third wheel for Caliber 1847, a Swiss‑made original component for Cartier‘s in‑house 1847 MC automatic movement. As a key part of the gear train, the third wheel sits between the center wheel and the seconds wheel, transmitting power from the center wheel to the seconds wheel and escapement, directly affecting timekeeping stability and accuracy. This original factory part is the ideal replacement for watchmakers to restore smooth power transmission when servicing the Caliber 1847 movement.
Genuine Cartier Part – Swiss factory‑original for Caliber 1847 MC, not a copy.
Gear Train Core – Sits between the center wheel and seconds wheel for smooth power transmission.
Precision Machined – Accurate gear teeth and pivots for smooth power transfer and low wear.
Essential for Service – Replace when timekeeping is inaccurate, movement stops, or power transmission is poor.
Compatible Movement – Designed for Cartier Caliber 1847 MC automatic.
| Parameter | Details |
|---|---|
| Part Name | Third Wheel |
| Compatible Movement | Cartier Caliber 1847 MC automatic (found in Santos, Ballon Bleu, Tank collections with in‑house calibers) |
| Type | Genuine original |
| Function | Transmits power from center wheel to seconds wheel and escapement |
| Origin | Switzerland |
| Condition | Brand new, genuine |
Cartier Caliber 1847 MC automatic movement (found in Santos, Ballon Bleu, Tank collections with in‑house calibers).
Repair of inaccurate timekeeping, stoppage, or poor power transmission.
Replacement of worn, broken‑tooth, or bent‑pivot third wheels during movement service.
1. Is this a genuine Cartier third wheel?
Yes. It is a Swiss factory‑original part for Caliber 1847 MC, not a copy.
2. What are the symptoms of a damaged third wheel?
Symptoms: very slow running or stoppage; hands move weakly after winding; unusual noise or hesitation in the gear train.
3. What should I pay attention to during installation?
The third wheel sits between the center wheel and seconds wheel. Ensure both pivots drop into jewels and the teeth mesh correctly. Follow the Cartier technical guide. Professional installation is strongly recommended.
4. Does this third wheel fit other Cartier calibers like 1904 MC?
No. The 1847 has a different gear train layout and dimensions – not interchangeable.
5. When should it be replaced?
Inspect for worn, deformed, or broken teeth; bent or worn pivots. If accuracy cannot be restored after servicing other components, replace the third wheel.
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