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The Omega 2500C Movement Co-Axial Wheel (7222500C30040) is a genuine Swiss-made component for the Omega Caliber 2500C Co‑Axial automatic movement. As a critical part of the Co‑Axial escapement system, it works with the pallet fork and intermediate escape wheel to transmit impulses from the gear train to the balance wheel, enabling stable energy transfer and consistent timekeeping .
Genuine Omega part – authentic Swiss‑made component for Caliber 2500C
Co‑Axial escapement component – works with pallet fork and intermediate escape wheel
Reduced friction design – co‑axial technology minimises sliding friction and improves long‑term accuracy
Service replacement part – listed in official Omega spare parts documentation for Caliber 2500C
Precision‑engineered – manufactured to Omega’s factory specifications
Part Number: 7222500C30040
Compatible Movement: Omega Caliber 2500C
Movement Diameter: 25.60 mm (11½”’)
Movement Height: 3.60 mm
Jewels: 27
Frequency: 25,200 vph (3.5 Hz) – reduced from 28,800 vph of earlier 2500A/B
Power Reserve: 48 hours
Escapement Type: Co‑Axial (2‑level)
Origin: Switzerland (Omega factory part)
Condition: Brand new
Service and overhaul of Omega Caliber 2500C movements
Co‑Axial escapement repair – replacing worn or damaged co‑axial wheels
Timekeeping restoration – ensuring consistent amplitude and rate
Restoration of Seamaster Planet Ocean, Aqua Terra, and other 2500C‑powered models
Suitable for professional watchmakers and authorised service centres
1. Is this a genuine Omega part?
Yes, this is a genuine Omega factory part (reference 7222500C30040), manufactured in Switzerland. It is listed in the official Omega 2500 spare parts list as the co‑axial wheel for Caliber 2500C .
2. Is the 2500C co‑axial wheel compatible with earlier 2500A/B or later 2500D?
No. The 2500C uses its own specific co‑axial wheel (30040), which is a different reference from the one used in 2500A/B (250030040). The 2500D uses a further evolved version (7222500D30040) with a different pinion design. Parts are not interchangeable between versions .
3. What is the function of the co‑axial wheel in the escapement?
The co‑axial wheel is part of the Co‑Axial escapement system – a revolutionary design developed by Dr. George Daniels and adopted by Omega. It transmits impulses from the escape wheel to the pallet fork with reduced friction, improving long‑term accuracy and extending service intervals compared to traditional lever escapements .
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