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The ETA Caliber 2892-417 intermediate ratchet wheel is a genuine Swiss-made original component specifically designed for the ETA 2892-417 automatic movement. As part of the automatic winding mechanism, this wheel transmits power between the oscillating weight and the mainspring barrel, ensuring efficient energy transfer for reliable timekeeping. Ideal for professional watchmakers and repair specialists, this authentic replacement part restores proper winding function during movement service or restoration.
Genuine ETA Part – Swiss factory-original for Caliber 2892-417, not a copy.
Intermediate Transmission Wheel – Transfers power between the rotor and the mainspring barrel.
Precision Machined – Accurate gear teeth for smooth power transfer and low wear.
Essential for Service – Common failure point when automatic winding efficiency drops or fails.
Compatible Movement – Designed specifically for ETA 2892-417 automatic.
| Parameter | Details |
|---|---|
| Part Name | Intermediate Ratchet Wheel |
| Part Number | ETA 2892-417 |
| Compatible Movement | ETA 2892-417 automatic |
| Function | Power transmission in automatic winding system |
| Origin | Switzerland |
| Condition | Brand new, genuine |
ETA 2892-417 automatic movement (common in high-end brands such as Omega, IWC, Breitling, etc.)
Repair of reduced automatic winding efficiency or rotor spinning without winding action
Replacement of worn, broken, or damaged intermediate ratchet wheels during movement service
1. Is this a genuine ETA part?
Yes. It is a Swiss ETA factory-original part (2892-417) for the 2892 series.
2. What are the symptoms of a damaged intermediate ratchet wheel?
Symptoms: rotor spins normally but automatic winding is very poor (low power reserve); 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. Professional installation is strongly recommended.
4. Does this part fit other ETA 2892 sub‑calibers like 2892-A2?
The automatic module parts are often interchangeable across 2892 variants, but verify with the parts diagram.
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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