Bulova 12 EBA Watch Spare Parts: Comprehensive Guide for Collectors and Watchmakers
The Bulova 12 EBA is a refined automatic watch movement predominantly used in Bulova watches from the mid-1960s onwards. It features 17 to 30 jewels, operates at 19,800 vibrations per hour, and has a generous power reserve of around 54 hours. This calibre is notable for its digital display functions, which include a second, minute, and jumping hour, alongside a traditional sweep seconds hand. The 28.5 mm diameter movement utilizes a micro-rotor design, which contributes to a slimmer profile and enhanced mechanical efficiency.
Key Technical Specifications
Calibre: Bulova 12 EBA
Movement Type: Automatic with digital display and sweep seconds
Jewels: 17 to 30 synthetic rubies
Diameter: 28.5 mm
Frequency: 19,800 vibrations per hour
Power Reserve: Approx. 54 hours
Era of Use: From 1965 onward
Unique Feature: Micro-rotor for compact design
Common Spare Parts
Balance Assembly & Staff: Ensures precise timekeeping oscillations
Mainspring & Barrel: Stores and releases energy consistently
Escape Wheel & Pallet Fork: Regulate escapement function
Digital Display Components: Include gears and levers for jumping hour and minutes
Cannon Pinion & Hour/Minute Wheels: Drive watch hands with smooth motion
Micro-rotor & Axle: Powers the automatic winding system
Winding Stem & Crown: Enable manual winding and time setting
Shock Absorbers: Protect movement from shocks and impacts
Hands & Dial Assemblies: Essential for vintage look maintenance
Case Screws & Fasteners: Secure the movement inside the watch case
Maintenance and Sourcing Tips
Confirm “12 EBA” marking on the movement before sourcing parts
Seek genuine or New Old Stock (NOS) components from trusted suppliers
Use detailed exploded movement diagrams for accurate replacement
Professional watchmaker involvement is recommended for servicing
Importance of Genuine Spare Parts
Maintains movement accuracy, durability, and operational lifespan
Preserves Bulova vintage craftsmanship and collector appeal
Supports reliable and expert restoration
Authentic Bulova 12 EBA spare parts are crucial for maintaining the heritage, precision, and functional longevity of these classic automatic movements beloved worldwide by watch enthusiasts.
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]
Mobile/WhatsApp: +91- 9841 360 340