A. Schild (AS) Calibre 2166 Watch Spare Parts: Technical Overview and Sourcing Guide
A. Schild (AS) Calibre 2166 is a prestigious Swiss automatic mechanical movement lauded for its reliability, precision, and practical day-date complication coupled with a hacking feature. Produced around the 1970s, this calibre runs at a high beat rate, offering smooth operation and robust performance ideal for vintage watch enthusiasts and watchmakers.
Key Technical Highlights
Calibre: AS 2166
Movement Type: Automatic, mechanical
Diameter: 25.60 mm (11.5 lignes)
Height: 5.95 mm
Jewels: 25 synthetic ruby jewels
Beat Rate: 28,800 vibrations per hour (4 Hz)
Power Reserve: Approximately 46 hours
Functions: Hours, minutes, sweep seconds, day & date, hacking seconds
Shock Protection: Incabloc or equivalent
Common Spare Parts and Components
Mainspring and Barrel: New old stock (NOS) or original mainsprings and barrels provide long-lasting power and torque.
Balance Wheel and Balance Staff: Essential parts for precise timing and shock absorption; original or compatible parts required.
Pallet Fork and Escape Wheel: Wear components within the escapement that require genuine or NOS replacements for optimal function.
Gear Train Wheels: Minute, third, and fourth wheels prone to wear; sourced from NOS stock or donor movements.
Setting Mechanism (Stem, Crown, Levers, Springs): Vital for smooth time and calendar setting; properly fitting components are necessary.
Jewels: Synthetic ruby bearings reduce friction; replacements must maintain original layout to ensure durability.
Hands and Dial Components: Authentic parts help retain the watch’s vintage aesthetic and collector value.
Day and Date Mechanism: Includes date jumpers, day discs, and unlocking yokes critical for reliable quickset function.
Sourcing and Maintenance Tips
Use original, NOS, or donor parts designed specifically for AS 2166 calibres for guaranteed compatibility.
Handle delicate components like the balance and escapement carefully during service to avoid damage.
Lubricate sparingly using modern synthetic oils following best practices in vintage watch servicing.
Verify the calibre number engraved on the movement before ordering parts to avoid mismatches.
Donor AS 2166 movements provide invaluable sources for rare or discontinued parts.
Why AS 2166 Spare Parts Matter
Genuine components ensure the calibre’s accuracy, durable winding system, and dependable day-date functions, critical for dependable operation.
Authentic restorations preserve the historical importance and collector appeal of this classic Swiss movement.
Comprehensive technical documentation and active watchmaker communities aid efficient repairs and parts sourcing.
Maintaining your A. Schild AS 2166 calibre with authentic spare parts guarantees reliable performance and honors Swiss horological tradition.
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Stem, Crown, Hands & Spares might be available for this movement.
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