Felsa 4007N Watch Spare Parts: Expert Guide for Collectors and Watchmakers
The Felsa 4007N is a Swiss automatic watch movement from the famous Bidynator series, dating back to the 1950s. It measures 11.5 lignes (approximately 26.3 mm) in diameter and has a height of 5.6 mm. The calibre features 17 to 30 jewels and operates at 18,000 vibrations per hour (vph), with a power reserve of around 43-44 hours. It boasts a quickset date mechanism, sweep seconds, and robust construction, making it a favored choice for vintage watch enthusiasts and professional restorers.
Key Technical Specifications
Calibre: Felsa 4007N
Movement Type: Automatic, mechanical with sweep seconds and quickset date
Jewels: 17 to 30 synthetic rubies
Frequency: 18,000 vph
Diameter: 26.3 mm (11.5 lignes)
Height: 5.6 mm
Power Reserve: Approximately 43-44 hours
Winding Mechanism: Yoke winding system with bi-directional rotor
Shock Protection: Incabloc
Common Spare Parts
Balance Staff: Essential for stable oscillations and reliable timing
Mainspring: New Old Stock (NOS) mainsprings recommended for dependable power delivery
Rotor & Bearings: Central rotor with ruby bearing axle for smooth automatic winding
Stem & Crown: Precise fit required for winding, setting, and date adjustment
Date Components: Date ring, date jumper, and quickset mechanism parts
Gear Train Components: Center, third, fourth, and escape wheels ensure smooth gear train operation
Hands & Dial Parts: Compatible hour, minute, sweep second hands, and date window components
Jewels: Synthetic rubies minimize friction and wear at critical pivots
Clicks & Springs: Secure ratchet wheels and click springs provide winding reliability
Bridges & Plates: Structural components delivering stability and correct alignment
Maintenance and Sourcing Tips
Confirm the “4007N” calibre marking to obtain correct spare parts
Use NOS or verified donor parts to retain originality and collector value
Trusted vintage parts dealers and reputable online sources are recommended
Employ Swiss-certified lubricants and professional servicing for longevity
Importance of Genuine Spare Parts
Guarantees precision, durability, and authenticity preservation
Maintains collector appeal and mechanical integrity
Supports expert repairs and reliable everyday wear
Using genuine spare parts is crucial to preserving the Felsa 4007N’s legacy as a high-quality Swiss automatic calibre treasured by watchmakers and collectors alike.
For any Watch Spare Parts inquiry, Email us for rate and availability: [email protected]
Watch Parts Enquiry
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Stem, Crown, Hands & Spares might be available for this movement.
Email us for rate and availability: [email protected]
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