EB-Bettlach 8487 Watch Spare Parts: Essential Guide for Collectors and Watchmakers
The EB-Bettlach 8487 is a Swiss manual wind watch movement, known for its precise pin lever escapement and solid construction. Part of the EB 8400 series, this calibre measures approximately 10½ lignes (23.7 mm) and was manufactured primarily during the mid-20th century. It stands out for its use of a synthetic finger jewel and Novodiac shock protection system, enhancing durability and accuracy. These qualities make the EB-Bettlach 8487 highly regarded among vintage watch collectors and repair professionals.
Key Technical Specifications
Calibre: EB-Bettlach 8487
Type: Manual wind, pin lever escapement
Size: Approx. 10½ lignes (23.7 mm)
Vibrations per hour: 18,000 A/h
Jewels: One 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 the synthetic finger jewel for accurate oscillation
Mainspring & Barrel: Delivers consistent power to the movement
Winding Stem & Crown: Often split stems, designed specifically for EB 8487
Gear Train Components: Center, third, fourth, and escape wheels to ensure smooth power transmission
Pallet Fork & Escape Wheel: Core components regulating timing accuracy
Jewels & Bearings: Synthetic jewels and metal bushings reduce friction and wear
Hands & Dial Components: Sized for vintage dials with central seconds
Case Screws & Clamps: Secure the movement firmly within the watch case
Maintenance and Sourcing Tips
Verify “8487” calibre marking for parts compatibility
Source New Old Stock (NOS) or genuine EB parts from trusted vintage suppliers
Regular servicing necessary to maintain timekeeping precision and movement longevity
Importance of Genuine Spare Parts
Ensures reliable and precise timekeeping
Preserves antique authenticity and collector value
Supports quality restoration and prolongs the movement’s service life
Using authentic EB-Bettlach 8487 spare parts is vital for maintaining the performance, reliability, and heritage of these classic Swiss mechanical watch movements cherished worldwide.
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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