TMI/Hattori SEIKO VD53/57 Movement Winding Pinion

Product Description

The TMI/Seiko VD53/57 Movement Winding Pinion is a genuine Japanese-made component for the popular VD53 and VD57 quartz chronograph movements from Seiko’s Time Module Inc. (TMI) division . As part of the keyless works mechanism, the winding pinion transfers manual winding motion from the crown to the movement, enabling time and date setting functions . This genuine TMI/Seiko part is essential for watchmakers restoring proper crown function when the original component becomes worn or damaged.

Features & Function

• Genuine TMI/Seiko part – authentic Japanese-made component for VD53 and VD57 chronograph movements 

• Keyless works component – transfers manual winding motion from the crown to the movement 

• Enables time/date setting – essential for reliable crown operation and calendar adjustment

• Essential for service – commonly replaced when crown operation becomes irregular or fails to engage

Specifications

• Compatible Movements: TMI/Seiko VD53, VD57 (including A/B/C variants) 

• Movement Size: 12¾ ligne (approx. 29.5mm) 

• Movement Height: 4.57mm 

• Chronograph Subdial Layout: 60-minute counter (9 o’clock), small seconds (6 o’clock), 1/10 second counter (12 o’clock) 

• Battery: SR920SW 

• Origin: Japan

Applications

• Service and repair – replacing worn or damaged winding pinions in VD53/VD57 movements

• Crown function restoration – ensuring smooth time and date setting operation

• Suitable for professional watchmakers and experienced repair technicians

FAQs

1. Is this a genuine TMI/Seiko part?

Yes, this is a genuine Seiko (TMI) factory part made in Japan. The VD53 and VD57 are quartz chronograph movements manufactured by Seiko Instruments Inc. (SII) and distributed by Time Module Inc. (TMI) .

2. Which movements is this winding pinion compatible with?

This winding pinion is compatible with the TMI/Seiko VD53 and VD57 families of movements, including variants A, B, and C. These are 12¾ ligne quartz chronograph calibers .

3. What is the function of the winding pinion?

The winding pinion is part of the keyless works mechanism that transfers manual winding motion from the crown to the movement, enabling time and date setting functions .

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.

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