$9.50
You Saved
This is a genuine ETA 7001-210 third wheel, a key gear in the gear train of the ETA 7001 manual-winding movement. It transmits power from the center wheel to the fourth wheel (seconds wheel), directly affecting timekeeping stability and energy transfer efficiency. Swiss made, brand new original part.
Genuine ETA Part – Swiss factory-original, not a copy or refurbished unit.
Gear Train Core – Sits between the center wheel and fourth wheel for smooth power transmission.
Affects Timekeeping – Tooth precision directly influences seconds wheel stability.
Essential for Service – Replaces worn or broken third wheels to restore movement function.
Compatible Movement – Designed specifically for ETA 7001 manual-wind caliber.
| Parameter | Details |
|---|---|
| Part Name | Third Wheel |
| Part Number | ETA 7001-210 |
| Compatible Movement | ETA 7001 (manual-wind, 21,600 vph, 44h power reserve) |
| Material | Quality steel |
| Origin | Switzerland |
| Condition | Brand new, genuine |
ETA 7001 manual-wind movement (common in classic small-seconds watches from Nomos, Stowa, Laco, etc.)
Replacement of worn, broken, or deformed third wheels during movement service
Repair of inaccurate timekeeping, stoppage, or poor power transmission caused by third wheel issues
1. Is this a genuine ETA third wheel?
Yes. It is a Swiss factory-original ETA part (7001-210), not a third-party copy.
2. What are the symptoms of a damaged third wheel?
Symptoms: very slow running or stoppage; seconds hand does not move or moves 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 fourth wheel. Ensure both pivots drop into jewels and the teeth mesh correctly. Follow the ETA technical guide. Professional installation is strongly recommended.
4. Does this third wheel fit other calibers like ETA 2801?
No. The gear train dimensions and tooth profiles of 7001 and 2801 are different – not interchangeable.
5. When should the third wheel 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.
Fast worldwide shipping within 3 business days.
Competitive pricing on Seiko/Hattori calibers.
3,000+ watch movements and parts in stock.
Trusted by watchmakers worldwide.
Personalized sourcing support via [email protected] or WhatsApp +86 18620212114.
