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The Omega 8500 Movement Barrel Complete (comprising references 7228500A20010 and 7228500A20011) is a genuine Swiss-made component set for the Omega Caliber 8500 Co‑Axial automatic movement . These two complete barrels are mounted in series, working together to provide the movement’s 60‑hour power reserve . Barrel One (ref. 20010) features a fixed mainspring with a bridle, while Barrel Two (ref. 20011) uses a slipping mainspring with an anti‑wear coating applied to its inside wall . They are recognized service parts listed in the official Omega 8500 spare parts list .
Genuine Omega parts – authentic Swiss-made components listed for Caliber 8500 series
Dual‑barrel system – two barrels mounted in series for stable torque output
60‑hour power reserve – provides extended running time
Anti‑wear coating – applied to barrel two’s inside wall to guarantee long life
Service replacement parts – recognized in official Omega technical documentation
| Parameter | Detail |
|---|---|
| Part Numbers | 7228500A20010 (Barrel One), 7228500A20011 (Barrel Two) |
| Compatible Movement | Omega Caliber 8500A |
| Barrel One Type | Fixed mainspring with bridle |
| Barrel Two Type | Slipping mainspring with anti‑wear coating |
| Power Reserve | 60 hours (two barrels combined) |
| Winding System | Series‑mounted, revolutions are added together |
| Origin | Switzerland (Omega factory parts) |
| Condition | Brand new |
Service and overhaul of Omega Caliber 8500 series movements
Barrel system repair – replacing worn or damaged complete barrels
Power reserve restoration – restoring the movement’s 60‑hour power reserve
Restoration of De Ville Hour Vision, Seamaster Aqua Terra, Constellation, and other 8500‑powered models
Suitable for professional watchmakers and authorized service centers
1. Are these genuine Omega parts?
Yes, these are genuine Omega factory parts (references 7228500A20010 and 7228500A20011), manufactured in Switzerland. They are listed in the official Omega 8500 spare parts list .
2. What is the difference between Barrel One and Barrel Two?
Barrel One (ref. 20010) uses a fixed mainspring with a bridle, while Barrel Two (ref. 20011) uses a slipping mainspring with an anti‑wear coating on its inside wall. The two are mounted in series to provide stable torque output and the movement’s 60‑hour power reserve .
3. How many barrels does the Caliber 8500 use?
The Caliber 8500 uses two complete barrels (references 20010 and 20011) mounted in series. Their revolutions are added together to provide the movement’s 60‑hour power reserve .
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