Felsa Cal. 4007/4007N Technical Data and Parts List
Technical data and service documentation for Felsa caliber 4007 and 4007N automatic watch movements — two-hand automatic mechanisms manufactured in Grenchen, Switzerland. Both calibers feature lever escapement, self-winding rotor, direct center-mounted seconds hand, and date display recessed through a dial aperture with rapid date-setting mechanism. The 4007 measures 11½ lignes; the 4007N is 11¼ lignes. Complete technical specifications detail cage diameter at 26.00 mm, along with precision data for the escapement system, balance wheel assembly, and mainspring barrel. An exploded parts diagram with individual reference numbers for every movement component enables rapid identification during assembly, repair, or maintenance work. Comprehensive trilingual parts list in French, English, and German provides exact nomenclature for all internal components and accessories.
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Document Details
- Format
- Pages
- 3
- Size
- 2.4 MB
- Category
- Watchmaking