EB-Bettlach 8491 Watch Spare Parts: Essential Guide for Collectors and Watchmakers
The EB-Bettlach 8491 is a Swiss mechanical manual wind watch movement known for its robust construction and reliable pin lever escapement. It is part of the EB 8400 series, measuring approximately 10½ lignes (23.7 mm) in diameter. Produced mainly in the mid-20th century, this calibre features a synthetic finger jewel and Novodiac shock protection system, enhancing its precision and durability. These attributes make it highly valued among vintage watch enthusiasts and professionals. Authentic spare parts are crucial to maintain its optimal performance and longevity.
Key Technical Specifications
Calibre: EB-Bettlach 8491
Type: Manual wind, pin lever escapement
Size: Approx. 10½ lignes (23.7 mm)
Vibrations per hour: 18,000 A/h
Jewels: 1 synthetic finger jewel
Shock Protection: Novodiac system
Lift Angle: 60°
Functions: Hours, minutes, central seconds
Era: Mid-20th century
Common Spare Parts
Balance Assembly & Staff: Featuring synthetic finger jewel for precise timing
Mainspring & Barrel: Provides steady power to the movement
Winding Stem & Crown: Often split winding stems specifically designed for EB 8491
Gear Train Components: Center, third, fourth, and escape wheels for efficient power transmission
Pallet Fork & Escape Wheel: Critical components for accurate escapement operation
Jewels & Bearings: Synthetic jewels and metal bushings reduce friction and wear
Hands & Dial Components: Compatible with vintage dials with central seconds
Case Screws & Clamps: Secure the movement inside the case firmly
Maintenance and Sourcing Tips
Confirm calibre “8491” marking for accurate part compatibility
Source New Old Stock (NOS) or genuine EB Bettlach parts from reputable suppliers
Regular servicing recommended to ensure precision and extend movement life
Importance of Genuine Spare Parts
Guarantees reliable, precise timekeeping
Maintains historical authenticity and collector value
Enables quality restoration and durability
Using authentic EB-Bettlach 8491 spare parts is essential to preserve the heritage, accuracy, and function of these classic Swiss mechanical watch movements cherished globally.
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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