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The SEIKO (SII) NH35/NH36/NH37/NH38/NH39 Clutch Wheel (#0282183) is a genuine Japanese-made component for the keyless works of these popular automatic movements. As a critical part of the crown mechanism, the clutch wheel engages with the sliding pinion to enable reliable switching between winding, date-setting, and time-setting positions when the crown is operated. Replacing a worn or damaged clutch wheel is the ideal solution for restoring proper crown function and reliable mode switching when keyless works issues occur.
Genuine Seiko/SII part – authentic Japanese-made component for NH35, NH36, NH37, NH38, and NH39 movements
Keyless works component – engages with sliding pinion for reliable crown mode switching
NH family compatibility – compatible across the most popular NH series calibers
Direct replacement – drop-in replacement for worn or damaged clutch wheels
Part Number: 0282183
Compatible Movements: Seiko NH35, NH36, NH37, NH38, NH39 (also known as 4R35/36/37/38/39)
Movement Family: NH Series (Basic Mechanical Series)
Movement Frequency: 21,600 vph (3 Hz)
Jewels: 24
Power Reserve: >41 hours
Hacking: Yes
Hand-Winding: Yes
Winding Direction: Bi-directional (Magic Lever)
Origin: Japan
Service and overhaul – replacing worn or damaged clutch wheels in NH series movements
Keyless works repair – resolving issues with crown position switching or improper stem engagement
Crown function restoration – ensuring smooth winding, date‑setting, and time‑setting operation
Suitable for professional watchmakers and experienced repair technicians
1. Is this a genuine Seiko/SII part?
Yes, this is a genuine Seiko (SII/TMI) factory part made in Japan. The NH series is manufactured by Seiko Instruments Inc. (SII) and distributed by Time Module Inc. (TMI).
2. Which movements is this clutch wheel compatible with?
This clutch wheel is compatible with Seiko NH35, NH36, NH37, NH38, and NH39 movements. These are based on the same architecture, with differences in complications: NH35 is date-only, NH36 adds day-date, NH37 adds a 24-hour indicator, NH38 is no-date open-heart, and NH39 adds a 24-hour subdial.
3. What are the signs that the clutch wheel needs replacement?
Common signs include difficulty switching crown positions, the stem feeling stuck or loose, failure to engage winding/setting functions properly, or visible wear/damage during inspection. A qualified watchmaker can diagnose these issues during servicing.
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