TMI/Hattori SEIKO VK63 Movement Seconds Wheel

Product Description

The TMI/Hattori SEIKO VK63 Movement Seconds Wheel is a genuine Japanese-made component designed for the VK63 meca-quartz chronograph movement . This precision wheel drives the small seconds hand located at the 6 o’clock subdial, a key part of the movement’s timekeeping display . This genuine TMI/Hattori part is essential for watchmakers restoring proper timekeeping function when the original component becomes worn or damaged.

Features & Function

• Genuine TMI/Hattori part – authentic Japanese-made component for the VK63 meca-quartz movement

• Small seconds drive – drives the 6 o’clock subdial seconds hand for accurate timekeeping

• Precision gear train component – part of the VK63’s gear train for smooth hand movement

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

Specifications

• Compatible Movement: Hattori/TMI VK63, VK63A

• Movement Size: 13½ ligne (approx. 30mm) 

• Movement Height: 5.10mm 

• Subdial Position: Small seconds at 6 o’clock 

• Hand Sizes: Hour: 1.50mm / Minute: 0.90mm / Chrono Seconds: 0.38mm / Sub Hands: 0.37mm 

• Date Position: 4:30 (tilted) 

• Battery: 394 / SR936SW 

• Origin: Japan 

Applications

• Service and repair – replacing worn or damaged small seconds wheels in VK63 movements

• Gear train restoration – ensuring smooth small seconds hand operation

• Suitable for professional watchmakers and experienced repair technicians

FAQs

1. Is this a genuine TMI/Hattori part?

Yes, this is a genuine TMI (Seiko/Hattori) part made in Japan. The VK63 is a meca-quartz chronograph movement manufactured by Seiko Instruments Inc. (SII) and distributed by Time Module Inc. (TMI) .

2. What is the function of the seconds wheel in the VK63?

The seconds wheel drives the small seconds hand at the 6 o’clock subdial for continuous timekeeping. The VK63’s running seconds hand moves at 1 beat per second, while the chronograph seconds hand moves at 5 beats per second .

3. What are the signs that the seconds wheel needs replacement?

Common signs include small seconds hand not moving smoothly, stopping, or moving irregularly, or visible wear/damage during movement 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.