Felsa 4007 Watch Spare Parts: Expert Guide for Collectors and Watchmakers
The Felsa 4007 is a distinguished Swiss automatic watch movement from the late 1950s, part of the iconic Bidynator series. It measures 11.5 lignes (approximately 25.9 mm) in diameter and 5.55 mm in height, featuring 21 to 25 synthetic jewels. Operating at 18,000 vibrations per hour (vph), this calibre is known for its semi-fast quickset date mechanism, bi-directional winding rotor, and solid construction, making it a sought-after movement for vintage wristwatch restoration and collectors.
Key Technical Specifications
Calibre: Felsa 4007
Movement Type: Automatic, mechanical with sweep seconds and date
Jewels: 21 to 25 synthetic rubies
Frequency: 18,000 vph
Diameter: 25.9 mm (11.5 lignes)
Height: 5.55 mm
Functions: Hours, minutes, sweep seconds, date with semi-fast quickset
Winding Mechanism: Bi-directional rotor with yoke winding system
Shock Protection: Incabloc
Common Spare Parts
Balance Staff: Critical for stable oscillations and accurate timing
Mainspring: New Old Stock (NOS) mainsprings recommended for longevity and consistent power
Rotor & Bearings: Central rotor with ball-bearing axle for efficient automatic winding
Stem & Crown: Must fit precisely for winding, time setting, and date adjustment
Calendar Components: Date ring, date jumper, and quickset mechanism parts
Gear Train Components: Center wheel, third wheel, fourth wheel, and escape wheel for seamless operation
Hands & Dial Components: Compatible hour, minute, and sweeping second hands for authentic restoration
Jewels: Synthetic rubies reduce friction at pivots and extend durability
Clicks & Springs: Ratchet wheels and click springs for secure winding
Bridges & Plates: Provide structure and proper alignment of components
Maintenance and Sourcing Tips
Verify the “4007” calibre marking before purchasing parts to ensure proper fit
Use NOS or verified donor parts to retain watch originality and collector value
Trusted vintage watch parts dealers and reputable online sources are recommended
Employ Swiss-certified lubricants and professional servicing for best performance
Importance of Genuine Spare Parts
Guarantees mechanical accuracy, durability, and authenticity
Maintains collector appeal and functional integrity
Supports expert restoration and dependable daily use
Using authentic spare parts is essential for preserving the Felsa 4007’s legacy as a hugely influential Swiss automatic movement 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]
Mobile/WhatsApp: +91- 9841 360 340