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The TMI/Seiko VD53 Movement Cannon Pinion is a genuine Japanese-made component for the popular VD53 quartz chronograph movement. As a core part of the motion work, the cannon pinion drives the minute hand for accurate time display, working in conjunction with the hour wheel. The VD53 is a 12¾ ligne (approx. 29.5mm) quartz chronograph caliber featuring a 24-hour subdial at 3 o’clock, small chronograph seconds at 6 o’clock, a 60-minute counter at 9 o’clock, and a date window between 4 and 5 o’clock . This genuine TMI/Seiko part is essential for watchmakers restoring proper timekeeping function when the original component becomes worn or damaged.
Genuine TMI/Seiko part – authentic Japanese-made component for the VD53 chronograph movement
Motion work component – drives the minute hand for accurate timekeeping
Multi-eye chronograph compatibility – works with the 3-6-9 subdial layout of VD53 movements
Essential for service – commonly replaced when minute hand operation becomes irregular
Compatible Movement: TMI/Seiko VD53 (including VD53A, VD53B, VD53C variants)
Movement Size: 12¾ ligne (approx. 29.5mm)
Movement Height: 4.57mm
Hand Sizes: Hour: 1.10mm / Minute: 0.65mm / Sub hands: 0.20mm
Subdial Layout: 24-hour at 3 o’clock, chronograph seconds at 6 o’clock, 60-minute counter at 9 o’clock, date between 4 and 5 o’clock
Battery: 371 / SR920SW
Origin: Japan
Service and repair – replacing worn or damaged cannon pinions in VD53 movements
Motion work restoration – ensuring smooth and accurate hand alignment
Suitable for professional watchmakers and experienced repair technicians
1. Is this a genuine TMI/Seiko part?
Yes, this is a genuine Seiko (TMI) factory part made in Japan. The VD53 is a quartz chronograph movement manufactured by Seiko Instruments Inc. (SII) and distributed by Time Module Inc. (TMI) .
2. What is the function of the cannon pinion?
The cannon pinion is part of the motion work that drives the minute hand. In the VD53 movement, it works with the hour wheel to ensure accurate time display across the chronograph’s subdial layout .
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.
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