Certina 25-66 Watch Spare Parts: Essential Information for Collectors and Watchmakers
The Certina 25-66 is a manual winding mechanical movement produced from 1960 to 1977, celebrated for its precision and reliability. Featuring a 17-jewel system and operating at 19,800 vibrations per hour, it offers a power reserve of approximately 46 hours. This calibre, used in various Certina models, includes a sweep seconds function and is noted for its bimetallic screw balance and patented big bearings, contributing to its robustness.
Key Technical Specifications
Movement Type: Manual winding mechanical
Calibre: Certina 25-66
Size: 11.5 lignes (25.6 mm diameter)
Height: Approximately 3.85 mm
Jewels: 17 synthetic jewels
Beat Rate: 19,800 vibrations per hour (vph)
Power Reserve: 46 hours
Functions: Sweep seconds
Common Spare Parts
Clutch Wheel (Ref: 407/936) for power transmission.
Escape Wheel ensures the regulating of energy release.
Fourth Wheel (Ref: 224/579) for gear train transmission.
Mainspring (1.20 x 0.200 x 15.0 mm) for energy storage.
Set Bridge and Set Lever support and activate setting functions.
Staff and Stem (Ref Stems: 200/460F) vital for movement operation.
Winding Pinion assists in winding the watch manually.
Breguet Hairspring and bimetallic screw balance for accuracy.
Jewels reduce friction, ensuring smooth operation.
Maintenance and Sourcing Tips
Verify the calibre 25-66 marking to ensure part compatibility.
Prefer New Old Stock (NOS) parts or trusted donor components for durability.
Handle delicate parts such as escapement and balance assembly with care.
Use lubricants suited for vintage manual watches to prolong movement life.
Specialist dealers and online suppliers offer a range of these genuine parts.
Importance of Genuine Spare Parts
Ensures accurate timekeeping, reliability, and longevity of your watch.
Maintains historical integrity and collector value.
Supports professional restorations for lasting service.
Using authentic parts will keep your Certina 25-66 running with precise Swiss craftsmanship for years to come.
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Watch Parts Enquiry
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Stem, Crown, Hands & Spares might be available for this movement.
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