Omega 8520 Movement Minute Wheel 7228520A31041

Product Description

The Omega 8520 Movement Minute Wheel (7228520A31041) is a genuine Swiss-made component for the Omega Caliber 8520 automatic movement. This critical torque-transmitting component is positioned between the intermediate wheel and the hour wheel in the motion work. When the crown is pulled to the hand‑setting position, the minute wheel transmits torque to the hour wheel, allowing precise positioning of the hour hand.

Features & Function

• Genuine Omega part – authentic Swiss-made component for Caliber 8520

• Motion work component – transmits torque from intermediate wheel to hour wheel

• Precise hand positioning – enables accurate hour hand alignment during time-setting

• Direct replacement – replaces worn or damaged minute wheels with worn teeth, broken pivots, or enlarged centre bores

Specifications

• Part Number: 7228520A31041

• Compatible Movement: Omega Caliber 8520 (Co‑Axial automatic)

• Movement Diameter: 28.1 mm (12½”’)

• Movement Height: 5.0 mm

• Jewels: 28

• Frequency: 25,200 vph (3.5 Hz)

• Power Reserve: 50 hours

• Origin: Switzerland (Omega factory part)

• Condition: Brand new

Applications

• Service and overhaul of Omega Caliber 8520 movements

• Motion work repair – replacing worn or damaged minute wheels

• Addressing hand-setting issues – resolving free play, hand recoil, or loss of synchronisation

• Restoration of Seamaster Aqua Terra, De Ville, and other 8520-powered models

• Suitable for professional watchmakers and authorized service centers

FAQs

1. Is this a genuine Omega part?
Yes, this is a genuine Omega factory part (reference 7228520A31041), manufactured in Switzerland. It is not an aftermarket or generic component.

2. Which movement is this minute wheel compatible with?
This minute wheel is specifically designed for the Omega Caliber 8520 automatic movement. Please verify your movement caliber before ordering.

3. What is the function of the minute wheel?
The minute wheel is part of the motion work that transmits torque from the intermediate wheel to the hour wheel, enabling precise hour hand positioning during hand‑setting.

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