MIYOTA/CITIZEN JS25 Winding Pinion

MIYOTA/CITIZEN JS25 Winding Pinion

$1.20
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Quantity Discount (%) Price
1 - 2 — $1.20
3 - 4 5 % $1.14
5 - 9 7 % $1.12
10 - 14 10 % $1.08
15+ 15 % $1.02
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Product Description

The MIYOTA/CITIZEN JS25 Winding Pinion is a genuine Japanese-made component designed for the JS25 quartz chronograph movement. As a key part of the keyless works, this pinion engages with the crown stem to enable manual time and date setting functions. The JS25 is a 12½ ligne movement with a 4.30mm thickness, featuring a 30-minute chronograph, 24-hour indicator, and date display . This brand new original part is essential for watchmakers restoring proper crown function when the original component becomes worn or damaged.

Features & Function

  • Genuine Miyota/Citizen part – authentic Japanese-made component for the JS25 movement

  • Keyless works component – enables manual time and date setting via the crown

  • Compatible with stem 065-505 – uses standard Miyota tap 10 stem 

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

Specifications

  • Compatible Movement: MIYOTA/Citizen JS25

  • Movement Size: 12½ ligne (approx. 28.2mm) 

  • Movement Thickness: 4.30mm 

  • Battery: 364 

  • Hand Sizes: Hour 1.20mm, Minute 0.70mm, Sweep Second 0.17mm 

  • Subdial Hands: 0.26mm 

  • Jewels: 0 

  • Origin: Japan

Applications

  • Service and repair – replacing worn or damaged winding pinions in JS25 movements

  • Keyless works restoration – resolving issues with crown stem engagement or setting functions

  • Suitable for professional watchmakers and experienced repair technicians

FAQs

1. Is this a genuine Miyota/Citizen part?
Yes, this is a genuine Miyota (Citizen) factory part made in Japan. The JS25 is manufactured by Citizen’s Miyota movement division .

2. Which movement is this winding pinion compatible with?
This winding pinion is designed for the Miyota JS25 quartz chronograph movement. It is also compatible with the JS05, JS15, and JP series movements that share the same keyless works architecture .

3. What is the function of the winding pinion?
The winding pinion transfers rotational force from the crown stem to the gear train for manual time setting and, on movements with date function, date adjustment.

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