A. Schild (AS) Calibre 5100 Watch Spare Parts: Technical Overview and Sourcing Guide
A. Schild (AS) Calibre 5100 is an automatic chronograph movement celebrated for its robustness and reliability, widely recognized for use in sports and tool watches. Known for its rugged construction and straightforward design, the calibre features a day and date display and has become popular in the vintage watch community.
Key Technical Highlights
Calibre: AS 5100
Movement Type: Automatic, mechanical chronograph
Diameter: Approximately 30.6 mm
Jewels: 17 synthetic ruby jewels
Beat Rate: 28,800 vibrations per hour (4 Hz)
Power Reserve: Around 48 to 60 hours
Functions: Chronograph with central minute counter, 24-hour hand, day and date display
Features: Known for robustness and ease of service
Common Spare Parts and Components
Mainspring and Barrel: Original and New-Old-Stock (NOS) mainsprings critical for power consistency and durability.
Balance Wheel and Balance Staff: Precision components essential for chronograph accuracy and shock absorption; exact fits needed.
Chronograph Module Parts: Includes levers, cams, coupling wheels, and special springs essential for chronograph function.
Escapement Components: Pallet fork, escape wheel, and associated jewels require genuine replacements.
Gear Train Wheels: Minute, third, and fourth wheels often replaced due to wear; sourcing from NOS or donor calibres recommended.
Setting and Winding Mechanisms: Well-fitting stems, crowns, and levers assure smooth adjustment and winding action.
Jewels: Synthetic ruby bearings reduce wear and friction; replacements must conform to original layouts.
Hands and Dial Components: Authentic hands and dial parts are important for preserving vintage aesthetics and function.
Sourcing and Maintenance Tips
Use official, NOS, or donor parts made specifically for AS 5100 for best results.
Carefully handle delicate chronograph and escapement components during repairs.
Apply modern synthetic lubricants sparingly according to vintage servicing guidelines.
Verify the calibre number on the movement before ordering parts to ensure compatibility.
Donor movements provide a valuable source of rare or discontinued components.
Why AS 5100 Spare Parts Matter
Genuine parts maintain the calibre’s precision, reliable chronograph operation, and durable automatic winding, critical for dependable performance.
Authentic restoration preserves the historical value and collector appeal of this classic Swiss chronograph movement.
Extensive technical documentation and watchmaker networks facilitate repairs and parts sourcing.
Maintaining the A. Schild AS 5100 calibre with authentic spare parts ensures its lasting performance and honors its place in Swiss watchmaking heritage.
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Stem, Crown, Hands & Spares might be available for this movement.
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