SEIKO (SII) NH05/NH06 Cannon Pinion

Product Description

The SEIKO (SII) NH05/NH06 Cannon Pinion is a genuine Japanese-made component for these compact automatic movements. As a core part of the motion work, the cannon pinion drives the minute hand and connects to the center wheel to ensure precise minute tracking. This brand new original part is essential for watchmakers restoring proper timekeeping function when the original cannon pinion becomes worn or damaged.

Features & Function

• Genuine Seiko/SII part – authentic Japanese-made component for NH05 and NH06 movements

• Motion work component – drives the minute hand for accurate time display

• NH0 family compatibility – designed for the compact 7¾”’ NH05 (date) and NH06 (day-date) calibers

• 21-jewel movement – part of the 21-jewel NH0 series architecture

• Direct replacement – drop-in replacement for worn or damaged cannon pinions

Specifications

• Compatible Movements: Seiko NH05 (date), NH06 (day-date)

• Movement Family: NH0 Series

• Movement Size: 7¾”’ (approx. 17.5mm) 

• Movement Height: 5.92mm 

• Jewels: 21 

• Frequency: 21,600 vph (3 Hz) 

• Power Reserve: >40 hours 

• Crown Positions: Normal (manual winding), 1st click (date/day setting), 2nd click (time setting) 

• Origin: Japan

Applications

• Service and overhaul – replacing worn or damaged cannon pinions in NH05/NH06 movements

• Motion work restoration – ensuring smooth and accurate hand alignment

• Suitable for professional watchmakers and experienced repair technicians

FAQs

1. Is this a genuine Seiko/SII part?

Yes, this is a genuine Seiko (SII/TMI) factory part made in Japan. The NH05 and NH06 are 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 designed for Seiko NH05 and NH06 movements. The NH05 features a date display, while the NH06 adds a day-date complication, but both share the same basic movement architecture . The NH05/NH06 are the compact 17.5mm versions of the popular NH series .

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

Common signs include minute hand not advancing correctly, slipping when setting the time, loose minute hand, or visible wear/damage during inspection. A damaged cannon pinion can prevent proper hand installation. 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.