SEIKO (SII) NH05/NH06 Center Wheel

SEIKO (SII) NH05/NH06 Center Wheel

$1.50
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Quantity Discount (%) Price
1 - 2 — $1.50
3 - 4 5 % $1.43
5 - 9 7 % $1.40
10 - 14 10 % $1.35
15+ 15 % $1.28
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Product Description

The SEIKO (SII) NH05/NH06 Center Wheel is a genuine Japanese-made component for these compact automatic movements. As a core part of the gear train, the center wheel connects the mainspring barrel to the rest of the movement, transmitting energy to drive the hands for accurate timekeeping . This brand new original part is essential for watchmakers restoring proper power transmission when the original center wheel becomes worn or damaged.

Features & Function

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

  • Gear train component – connects the mainspring barrel to drive the hands

  • NH family compatibility – designed for the compact 7¾”’ NH05 and NH06 calibers

  • Direct replacement – drop-in replacement for worn or damaged center wheels

Specifications

  • Part Number: Please verify with supplier (refers to standard NH05/NH06 center wheel)

  • 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

  • Origin: Japan

Applications

  • Service and overhaul – replacing worn or damaged center wheels in NH05/NH06 movements

  • Gear train restoration – ensuring proper power transmission for accurate timekeeping

  • 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 center wheel compatible with?

This center wheel 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 gear train architecture .

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

Common signs include irregular timekeeping, low amplitude, 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.

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