Certina 25-45 Watch Spare Parts: Key Insights for Collectors and Watchmakers
The Certina 25-45 is a classic Swiss automatic mechanical movement produced between 1951 and 1960. Known for its robust construction and reliable performance, it features 21 jewels, a beat rate of 18,000 vibrations per hour, and a power reserve of approximately 42 hours. The calibre is a favorite among vintage watch collectors and professionals restoring Certina watches.
Key Technical Specifications
Movement Type: Automatic mechanical
Calibre: Certina 25-45
Size: 11.5 lignes (approx. 25.6 mm diameter)
Height: Approximately 6.0 mm
Jewels: 21 synthetic jewels
Beat Rate: 18,000 vibrations per hour (vph)
Power Reserve: About 42 hours
Functions: Sweep seconds, automatic winding
Common Spare Parts
Balance Assembly: Includes balance wheel, staff, hairspring, and regulator for precise timekeeping.
Mainspring: High-quality and correctly sized mainsprings ensure consistent power delivery.
Escape Wheel & Pallet Fork: Core parts for accurate motion regulation.
Gear Train Parts: Center, third, and fourth wheels essential for efficient power transmission.
Setting & Winding Components: Stem, crown, clutch wheel, setting lever, and springs for manual control.
Oscillating Weight and Bearings: Integral to the automatic winding mechanism, enabling self-winding efficiency.
Plates, Bridges & Screws: Provide structural stability.
Jewels: Synthetic rubies reduce friction and wear on pivots.
Hands & Dial Parts: Vintage-compatible parts for authentic restoration.
Maintenance and Sourcing Tips
Always verify the calibre “25-45” marking before purchasing spare parts.
Prefer New Old Stock (NOS) or trusted donor parts for optimal fit and durability.
Handle fragile escapement and winding components carefully during servicing.
Use lubricants formulated for vintage automatic Swiss movements.
Specialist suppliers and vintage watch parts dealers regularly stock these components.
Importance of Genuine Spare Parts
Maintains accuracy, durability, and reliable operation.
Preserves the authenticity and collector value of your vintage Certina watch.
Supports professional restoration for sustained watch longevity.
Original spare parts keep your Certina 25-45 running with true Swiss craftsmanship and performance.
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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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