EB-Bettlach 8501 Watch Spare Parts: Comprehensive Guide for Collectors and Watchmakers
The EB-Bettlach 8501 is a Swiss manual wind watch movement introduced in the mid-1970s, part of the final generation of classic pin lever calibres from Ebauches Bettlach. With a case size of 12 lignes (27 mm) and a frequency of 21,600 vibrations per hour, the 8501 calibre is unique for its minimal jewel count and innovative pillar plate construction. Its bridges and plates are riveted rather than screwed, making the movement generally non-repairable except for basic parts replacement. As a collector’s item, sourcing authentic spare parts is crucial for restoration and maintenance.
Key Technical Specifications
Calibre: EB-Bettlach 8501
Type: Manual wind, pin lever escapement
Size: 12 lignes (27 mm)
Frequency: 21,600 vibrations per hour
Jewels: 1 synthetic ellipse ruby
Lift Angle: 45°
Era: Launched in 1976, produced through the quartz crisis
Common Spare Parts
Balance Assembly & Roller: Key for stable oscillation and regulated timekeeping
Mainspring & Barrel: Supplies consistent power for reliable movement operation
Winding Stem & Crown: Designed for the specific pillar plate construction
Ratchet Wheel & Click: Original click and wheel parts available for EB 8501
Hands & Dial Components: Sized to fit traditional dials with sweep seconds
Gear Train Components: Includes center, third, fourth, escape wheels adapted for riveted pillar design
Case Screws & Fasteners: Secure the movement inside the watch case
Maintenance and Sourcing Tips
Always confirm the “8501” marking and the “76” variant series for proper part compatibility
Prefer New Old Stock (NOS) or genuine EB Bettlach parts from highly reputable suppliers
Note riveted bridges restrict repair—some components may require professional handling
Specialist sellers of vintage watch spares provide the best sources for authentic spare parts
Importance of Genuine Spare Parts
Ensures reliable and accurate timekeeping
Maintains historical authenticity and collector value
Supports quality restoration of this distinctive, late-era Swiss movement
Using genuine EB-Bettlach 8501 spare parts is essential for preserving the function and historical legacy of this unique movement valued by watchmakers and enthusiasts worldwide.
For any Watch Spare Parts inquiry, Email us for rate and availability: [email protected]
Watch Parts Enquiry
* If you are unable to fill out any of the required information fields, please type “N/A”.
Stem, Crown, Hands & Spares might be available for this movement.
Email us for rate and availability: [email protected]
Mobile/WhatsApp: +91- 9841 360 340