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The Omega 2500D Movement Barrel Complete (7222500D20010) is a genuine Swiss-made component for the Omega Caliber 2500D Co‑Axial automatic movement. As a single mainspring barrel, it forms the power source of the 2500D movement, storing and releasing energy to drive the gear train and Co‑Axial escapement with stable torque. It is a recognized service part for professional movement overhauls and is specifically referenced for Caliber 2500E as well.
Genuine Omega part – authentic Swiss-made component for Caliber 2500D
Single mainspring barrel – forms the power source of the movement
48-hour power reserve – provides stable torque for daily timekeeping
Service replacement part – referenced for both 2500D and 2500E calibers
Precision-engineered – manufactured to Omega’s factory specifications
Part Number: 7222500D20010
Compatible Movements: Omega Caliber 2500D, 2500E
Movement Diameter: 25.60 mm (11½”’)
Movement Height: 3.60 mm (complete movement)
Jewels: 27
Frequency: 25,200 vph (3.5 Hz)
Power Reserve: 48 hours
Barrel Type: Single mainspring barrel
Origin: Switzerland (Omega factory part)
Condition: Brand new
Service and overhaul of Omega Caliber 2500D and 2500E movements
Barrel system repair – replacing worn mainsprings or barrels
Power reserve restoration – ensuring stable torque delivery to the Co‑Axial escapement
Restoration of Seamaster Planet Ocean, Seamaster 300, De Ville, and other 2500D/E‑powered models
Suitable for professional watchmakers and authorized service centers
1. Is this a genuine Omega part?
Yes, this is a genuine Omega factory part (reference 7222500D20010), manufactured in Switzerland. The 2500D is the fourth and final evolution of the 2500 family, featuring a 3‑level Co‑Axial escapement .
2. What is the difference between 2500D and 8500 barrel systems?
The 2500D uses a single mainspring barrel with a 48‑hour power reserve, while the 8500/8900 use dual series‑coupled barrels providing 60 hours of power reserve . The dual‑barrel system offers longer power reserve and helps reduce timing variations due to isochronism, but the single barrel of the 2500D has proven reliable and maintains excellent accuracy to the end of its power reserve .
3. Is the 7222500D20010 compatible with earlier 2500A/B/C versions?
According to Omega technical documentation, the 2500D barrel may be compatible with later 2500C versions, but it is not universally backward compatible with earlier A and B versions due to the significant changes made in the D version, including the redesigned tri‑level escapement. Please verify your movement version before ordering.
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