Omega 8500 Movement Wig-Wag Pinion 7228500A32104

Product Description

The Omega 8500 Movement Wig-Wag Pinion (7228500A32104) is a genuine Swiss-made component for the Omega Caliber 8500 Co‑Axial automatic movement . As a critical part of the bi‑directional automatic winding system, two wig‑wag pinions reverse the winding direction, ensuring the mainspring is wound regardless of the rotor’s rotation direction .

Features & Function

• Genuine Omega part – authentic Swiss-made component for Caliber 8500A

• Bi‑directional winding system component – works in pairs to reverse the winding direction 

• Ensures efficient automatic winding – winds the mainspring regardless of rotor direction 

• Service replacement part – recognized in official Omega technical documentation 

Specifications

• Part Number: 7228500A32104

• Compatible Movement: Omega Caliber 8500A

• Movement Diameter: 29.00 mm (12¾”’)

• Movement Height: 5.5 mm

• Jewels: 39

• Frequency: 25,200 vph (3.5 Hz)

• Power Reserve: 60 hours (two series-coupled barrels) 

• Origin: Switzerland (Omega factory part)

• Condition: Brand new

Applications

• Service and overhaul of Omega Caliber 8500A movements

• Automatic winding system repair – replacing worn or damaged wig‑wag pinions 

• Restoration of De Ville Hour Vision, Seamaster Aqua Terra, and other 8500‑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 7228500A32104), manufactured in Switzerland. It is listed in the official Omega 8500 spare parts list as “Wig-wag pinion” .

2. How many wig‑wag pinions does the Caliber 8500 automatic system use?

The Caliber 8500 uses two wig‑wag pinions (both reference 32104) that work together to reverse the winding direction for bi‑directional winding .

3. What is the function of the wig‑wag pinions?

The wig‑wag pinions are part of the automatic system that reverses the winding direction, enabling the mainspring to be wound whether the oscillating weight rotates clockwise or counter‑clockwise .

Why Choose SOFLY Watch Parts?

• Fast worldwide shipping within 3 business days.

• Competitive pricing on Seiko/Hattori calibers.

• 3,000+ watch movements and parts in stock.

• Trusted by watchmakers worldwide.

• Personalized sourcing support via [email protected] or WhatsApp +86 18620212114.