




BFG – Baumgartner 866 31/7 (CLDD) Watch Spare Parts: Comprehensive Overview
The Baumgartner BFG 866 31/7 (CLDD) is a Swiss manual winding mechanical movement featuring a pin lever escapement, calendar, day, and date functionalities (CLDD variant). Known for its robustness and classic design, this calibre was widely used in vintage wristwatches during the 1970s.
Key Technical Specifications
Calibre: BFG 866 31/7 (CLDD)
Movement Type: Mechanical manual wind with pin lever escapement
Size: 13.5 lignes (approx. 30.7 mm diameter)
Beat Rate: 18,000 vibrations per hour (vph)
Jewels: Typically 1 synthetic jewel
Functions: Sweep seconds, calendar day and date with quickset functionality
Construction: Pillar construction with yoke winding system
Balance: Nickel anular balance with Novodiac shock protection
Setting Mechanism: Screw set lever with day and date quickset features
Common Spare Parts
Mainspring and Barrel: Original or New Old Stock (NOS) mainsprings ensuring steady power delivery.
Balance Assembly: Balance wheel, staff, hairspring, and regulator ensuring precise timekeeping and shock resistance.
Escape Wheel and Pallet Fork: Core escapement parts requiring precision fit.
Gear Train Wheels: Center, third, and fourth wheels for power transmission.
Setting Mechanism: Stems, crowns, setting levers, springs, yoke, clutch components.
Day and Date Mechanism: Day wheels, date discs, corrector springs, locking levers, and quickset components.
Hands and Dial Parts: Period-correct replacements to preserve vintage appearance.
Screws and Bridges: Structural components vital for movement integrity.
Maintenance and Sourcing Tips
Verify the BFG 866 31/7 (CLDD) marking on your movement before ordering parts for compatibility.
Use NOS, original, or high-quality donor parts for best durability and performance.
Handle day and date components with care to prevent damage during servicing.
Lubricate sparingly with appropriate oils for vintage mechanical watches.
Specialist parts suppliers provide a wide selection of Baumgartner 866 series spare parts.
Importance of Genuine Spare Parts
Genuine components guarantee accurate timekeeping, longevity, and reliable operation.
Preserve the historical and collector significance of your vintage Baumgartner timepiece.
Ensures proper restoration and ongoing serviceability.
Maintaining your Baumgartner BFG 866 31/7 (CLDD) with authentic spare parts assures dependable performance and honors its place in Swiss horology.
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Watch Parts Enquiry
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Stem, Crown, Hands & Spares might be available for this movement.
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