Seiko Caliber 11A Movement Parts List and Technical Specifications (17j and 21j)
Technical reference documentation for the Seiko caliber 11A movement, covering both 17-jewel and 21-jewel variants. This service manual presents a complete parts list with numbered component references and detailed exploded views of all mechanical assemblies, including the barrel bridge, train-wheel bridge, pallet cock, balance cock, cannon pinion, hour and minute wheels, and ratchet wheel. The movement is housed in a 15.15 × 13.00 mm case with a maximum height of 3.50 mm and operates at 21,600 vibrations per hour. Both versions feature manual wind and Diashock shock resistance; the 21-jewel variant includes an integrated oil lubrication system. Essential for technicians performing movement repair, parts identification, and assembly work on this manual-wind caliber.
Documentation must be downloaded on a computer (PC, Mac, or Linux).
Do not use a smartphone or tablet to download documentation; they generally lack sufficient memory capacity to handle large files, and few users know how to locate the download folder on these devices.
Once downloaded, you can use it right away and even print the pages you need, or use your smartphone in photo mode to translate into the language of your choice: Google Translate
Document Details
- Format
- Pages
- 2
- Size
- 179.8 KB
- Category
- Watchmaking