A. Schild (AS) Calibre 5153 Watch Spare Parts: Technical Overview and Sourcing Guide
A. Schild (AS) Calibre 5153 is a Swiss automatic mechanical movement known for its precision and robust construction. Operating at a high beat rate of 28,800 vibrations per hour (4 Hz), this calibre is widely used in vintage watches featuring sweep seconds. It is valued for reliability and smooth operation, making it a favorite among collectors and watchmakers.
Key Technical Highlights
Calibre: AS 5153
Movement Type: Automatic, mechanical
Beat Rate: 28,800 vibrations per hour (4 Hz)
Functions: Hours, minutes, sweep seconds
Jewels: Typically 17 synthetic ruby jewels
Era: Circa 1970s
Common Spare Parts and Components
Mainspring and Barrel: Original or New-Old-Stock (NOS) mainsprings maintain power consistency and longevity.
Balance Wheel and Balance Staff: Precision components essential for accurate timing and shock resistance.
Pallet Fork and Escape Wheel: Wear-prone escapement parts requiring genuine or NOS replacements.
Gear Train Wheels: Minute, third, and fourth wheels that may need replacement, commonly sourced from NOS stock or donor movements.
Setting Mechanism (Stems, Crowns, Levers, Springs): Accurate fitment ensures smooth winding and time setting.
Jewels: Synthetic ruby bearings reduce friction and wear, matching original configurations.
Hands and Dial Components: Authentic parts maintain vintage aesthetics and preserve collector value.
Sourcing and Maintenance Tips
Use original, NOS, or donor parts designed specifically for AS 5153 to ensure perfect compatibility.
Handle delicate components like balance and escapement carefully during servicing.
Apply modern synthetic lubricants sparingly according to vintage watch maintenance protocols.
Confirm the calibre number on the movement before ordering parts to avoid mistakes.
Donor AS 5153 movements offer valuable sources for rare and discontinued parts.
Why AS 5153 Spare Parts Matter
Genuine components uphold the calibre’s accuracy, durability, and smooth automatic operation, crucial for reliable vintage watch performance.
Authentic restorations preserve the historical significance and enhance collector appeal.
Detailed technical documentation and active watchmaker communities facilitate efficient repairs and parts sourcing.
Maintaining your A. Schild AS 5153 calibre with quality spare parts ensures long-lasting reliability and honors its place in Swiss horology.
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Stem, Crown, Hands & Spares might be available for this movement.
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