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This is a genuine Omega Co‑Axial wheel (escape wheel) for Caliber 8800 Co‑Axial automatic movement, part number 7228800A3004019, Swiss‑made. As a core component of Omega‘s patented Co‑Axial escapement system, it works with the pallet fork and balance wheel to convert gear train energy into precise oscillating beats, offering higher energy efficiency, lower friction, and longer service intervals compared to traditional Swiss lever escapements. This original factory part is the ideal replacement for watchmakers to restore precise timekeeping when servicing the Caliber 8800 movement.
Genuine Omega Part – Swiss factory‑original for Caliber 8800 Co‑Axial, not a copy.
Co‑Axial Escapement Core – Features a three‑level escape wheel (traditional is single‑level) working with three pallet stones for direct impulse, reducing sliding friction.
High Wear Resistance – Special tooth geometry with DLC (diamond‑like carbon) or other hardening treatments significantly extends service intervals.
Anti‑Magnetic – Made of anti‑magnetic materials (e.g., nickel‑phosphorus) to resist everyday magnetic fields for stable timekeeping.
Essential for Service – Common failure point for inaccurate timekeeping, stoppage, or low amplitude; replacing it restores escapement efficiency and accuracy.
Compatible Movement – Designed for Omega Caliber 8800, 8801, 8806 (8800 series Co‑Axial automatic).
| Parameter | Details |
|---|---|
| Part Name | Co‑Axial Wheel (Escape Wheel) |
| Part Number | Omega 7228800A3004019 |
| Compatible Movements | Omega Caliber 8800, 8801, 8806 (8800 series Co‑Axial automatic) |
| Function | Escapement power transmission, controls timekeeping accuracy |
| Material | Nickel‑phosphorus or other anti‑magnetic, high‑hardness alloy with coating |
| Origin | Switzerland |
| Condition | Brand new, genuine |
Omega Caliber 8800 series Co‑Axial automatic movements (found in Seamaster Diver 300M 8800, Aqua Terra 8800, Constellation 8800, etc.).
Repair of severe timekeeping errors, stoppage, or low amplitude not resolved by routine service.
Replacement of escape wheels with worn teeth, deformed tips, or damaged coating during service.
1. Is this a genuine Omega Co‑Axial wheel?
Yes. It is a Swiss factory‑original part (7228800A3004019) for 8800 series calibers, not a copy.
2. What is the difference between a Co‑Axial escape wheel and a traditional one?
A traditional escape wheel has a single level of teeth and causes sliding friction with the pallet stones. The Co‑Axial wheel has three levels, allowing direct impulse contact with three pallet stones, converting sliding friction into nearly frictionless radial push. This yields about 15% higher energy efficiency, significantly reduced wear, and service intervals extended to 8‑10 years.
3. What are the symptoms of a damaged Co‑Axial wheel?
Symptoms: very fast or slow timekeeping; stoppage or intermittent running; very low amplitude; irregular ticking noise or metallic scraping sound from the escapement.
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