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This is a genuine Sellita SW200-260 ratchet wheel driving wheel, an original Swiss-made component for the Sellita SW200 automatic movement. The driving wheel works in conjunction with the ratchet wheel as part of the automatic winding system, transferring power from the oscillating weight to the mainspring barrel.
This brand new replacement part is essential for watchmakers servicing or restoring SW200 calibers, ensuring proper winding efficiency and reliable timekeeping.
Genuine Sellita Part – Swiss factory-original, perfect fit for SW200 movements.
Key Automatic Winding Component – Works with the ratchet wheel to transfer rotor power to the mainspring barrel.
Precision Machined – Accurate gear teeth for smooth power transfer and low wear.
Essential for Service – A common failure point when automatic winding efficiency drops or fails.
Compatible Movement – Designed for Sellita SW200 automatic calibers.
| Parameter | Details |
|---|---|
| Part Name | Ratchet Wheel Driving Wheel |
| Part Number | Sellita SW200-260 |
| Compatible Movements | Sellita SW200 automatic (SW200-1, etc.) |
| Function | Power transmission in automatic winding system |
| Origin | Switzerland |
| Condition | Brand new, genuine |
Sellita SW200 automatic movement (common in Tissot, Mido, Hamilton, Certina, etc.)
Repair of reduced automatic winding efficiency or rotor spinning without winding action
Replacement of worn, broken, or damaged ratchet wheel driving wheels during movement service
1. Is this a genuine Sellita part?
Yes. It is a Swiss Sellita factory-original part (SW200-260) for SW200 movements.
2. What are the symptoms of a damaged ratchet driving wheel?
Symptoms: rotor spins normally but automatic winding is very poor (low power reserve after wearing); manual winding works but automatic does not; unusual noise or grinding during automatic winding.
3. What should I pay attention to during installation?
This wheel sits in the automatic module, working with reversing wheels and the ratchet wheel. Clean the train, inspect reversers. Use recommended lubrication (special grease). Professional installation is strongly recommended.
4. Does this part fit the ETA 2824-2 movement?
SW200 and ETA 2824-2 automatic modules are not fully interchangeable. Use dedicated parts for each caliber. This Sellita part is not guaranteed to work in an ETA movement.
5. When should it be replaced?
Inspect for worn, deformed, or broken teeth during service. If automatic winding fails after ruling out reversers and rotor bearings, replace this wheel.
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