TMI/Hattori SEIKO VJ12 Movement Cannon Pinion

TMI/Hattori SEIKO VJ12 Movement Cannon Pinion

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Product Description

The TMI/Seiko VJ12 Movement Cannon Pinion is a genuine Japanese-made component for the popular VJ12 quartz movement . As a core part of the motion work, the cannon pinion transmits power from the gear train to the minute hand, and works with the minute wheel to drive the hour hand for accurate time display. The VJ12 is a compact 8¾ ligne (approx. 19.8mm) movement with a slim 2.71mm height, widely used in three-hand watches with date function .

Features & Function

  • Genuine TMI/Seiko part – authentic Japanese-made component for the VJ12 movement 

  • Motion work component – drives the minute hand and hour wheel for accurate timekeeping

  • Compact design – designed for slim 2.71mm quartz movements 

  • Essential for service – commonly replaced when hand operation becomes irregular

Specifications

  • Compatible Movement: TMI/Seiko VJ12, VJ12B, VJ12D6 

  • Movement Size: 8¾ ligne (approx. 19.8mm) 

  • Movement Height: 2.71mm 

  • Hand Sizes: Hour: 1.20mm / Minute: 0.70mm / Seconds: 0.17mm 

  • Battery: 364 / SR621SW 

  • Stem: 351332, Tap 10 

  • Origin: Japan 

Applications

  • Service and repair – replacing worn or damaged cannon pinions in VJ12 movements

  • Motion work restoration – ensuring smooth and accurate hand alignment

  • 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 VJ12 is a quartz movement manufactured by Seiko Instruments Inc. (SII) and distributed by Time Module Inc. (TMI) .

2. Which movements is this cannon pinion compatible with?

This cannon pinion is compatible with the TMI/Seiko VJ12 family of movements, including VJ12B and VJ12D6 variants . The VJ12 is an 8¾ ligne quartz caliber with 3 hands and date function at 3 or 6 o’clock .

3. What are the signs that the cannon pinion needs replacement?

Common signs include minute hand not advancing correctly, slipping when setting the time, or visible wear/damage during inspection. A qualified watchmaker can diagnose these issues.

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.

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