


EB-Bettlach 8423 Watch Spare Parts: Essential Guide for Collectors and Repairers
The EB-Bettlach 8423 is a Swiss manual wind watch movement measuring approximately 12 lignes, well-regarded for its reliable pin lever escapement and chronograph function, including sub-seconds. Produced in the 1970s, it blends classic mechanical design with useful features, making it a valuable calibre for collectors and watchmakers specializing in vintage timepieces. Authentic spare parts are critical for maintaining its operation and accuracy.
Key Technical Specifications
Calibre: EB-Bettlach 8423
Type: Manual wind, pin lever escapement with chronograph and sub-seconds
Size: 12 lignes (about 27 mm)
Era: 1970s
Functions: Hours, minutes, small seconds, chronograph
Common Spare Parts
Balance Assembly & Staff: Essential for time regulation and smooth operation.
Mainspring & Barrel: Provides consistent power delivery for accurate timekeeping.
Chronograph Mechanism Parts: Components such as runner friction springs, levers, and cams specific to the chronograph function.
Winding Stem & Crown: Designed for proper fitment in EB 8423 calibres; split winding stems commonly used.
Gear Train Components: Includes center, third, fourth, and escape wheels to drive timekeeping and chronograph functions.
Pallet Fork & Escape Wheel: Critical components of the pin lever escapement to ensure reliable operation.
Jewels & Bearings: Synthetic rubies at pivot points to reduce friction and wear.
Hands & Dial Accessories: Sized for vintage 12 ligne dials with chronograph functions.
Case Screws & Clamps: Secure movement within watch cases appropriately.
Maintenance and Sourcing Tips
Confirm “8423” calibre mark before sourcing parts for accuracy.
Use New Old Stock (NOS) or authentic EB parts from trusted suppliers specialized in vintage watch components.
Regular servicing recommended to maintain chronograph precision and overall movement reliability.
Importance of Genuine Spare Parts
Ensures precise and dependable functionality, especially important with chronograph complications.
Preserves the collector and historical value of the movement.
Supports effective and lasting restoration efforts to maintain the watch’s vintage integrity.
Proper use of genuine EB-Bettlach 8423 spare parts is vital for sustaining the performance and collectible appeal of these intricate Swiss mechanical watches.
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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