Felsa 4025 Watch Spare Parts: Detailed Guide for Collectors and Watchmakers
The Felsa 4025 is a compact Swiss manual wind movement designed mainly for ladies’ wristwatches. It features a diameter of 7 3/4 lignes (approximately 17.2 mm) and a slim profile with a height of 2.85 mm. Equipped with 17 synthetic jewels, it operates at 18,000 vibrations per hour (vph) and includes Incabloc shock protection to ensure longevity and precision. This calibre is notable for including a date complication without a seconds hand, a rare design for its size and function.
Key Technical Specifications
Calibre: Felsa 4025
Movement Type: Manual wind
Jewels: 17 synthetic rubies
Frequency: 18,000 vph
Diameter: 17.2 mm (7 3/4 lignes)
Height: 2.85 mm
Shock Protection: Incabloc
Functions: Hours, minutes, date (no seconds hand)
Power Reserve: Approximately 43 hours
Common Spare Parts
Balance Staff: Crucial for stable balance wheel oscillations and accurate timekeeping
Mainspring: New Old Stock (NOS) mainsprings preferred for reliable power delivery
Stem & Crown: Precise fit necessary for winding and time setting
Gear Train Components: Center, third, fourth, and escape wheels ensure smooth mechanical transmission
Date Mechanism: Date wheel, jumper spring, and semi-quickset components for date adjustment
Hands & Dial Components: Compatible hour and minute hands for authentic restoration
Jewels: Synthetic rubies reduce friction at pivot points
Clicks & Springs: Ratchet wheels and click springs secure winding and smooth operation
Bridges & Plates: Provide structural support and correct alignment of components
Maintenance and Sourcing Tips
Confirm the “4025” calibre marking before ordering parts to ensure compatibility
Seek NOS or verified donor parts to maintain watch originality and value
Source parts from trusted vintage watch dealers and reputable online platforms
Employ Swiss-certified lubricants and expert servicing for optimal movement health
Importance of Genuine Spare Parts
Guarantees precision, durability, and preservation of authenticity
Maintains collector value and functional integrity
Supports expert repairs and reliable daily wear
Using genuine spare parts is essential to preserve the Felsa 4025’s legacy as a reliable and distinctive Swiss manual wind calibre favored by collectors and watchmakers.
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