Seiko Caliber 15A Watch Movement spare parts
Seiko Caliber 15A Watch Movement Spare Parts
The Seiko Caliber 15A is a vintage Japanese mechanical watch movement developed for Seiko’s Lady Seiko collection. Introduced around 1959, this hand-wound movement represents Seiko’s early approach to producing compact, reliable mechanical movements for ladies’ wristwatches. It is part of the Seiko 15 movement family and is particularly interesting to vintage watch enthusiasts and hobbyist watchmakers.
The Caliber 15A features a traditional mechanical construction with a 21-jewel arrangement, a Swiss lever escapement and Seiko’s Diashock shock protection system. Its 19,800 vibrations-per-hour frequency provides dependable timekeeping when the movement is properly maintained.
Seiko 15A Spare Parts
Finding original Seiko 15A watch movement spare parts is important when restoring or servicing vintage Lady Seiko watches. Watchmakers may need individual components or complete assemblies to bring these movements back into working condition.
Commonly required spare parts include:
– Barrel and train-wheel bridge
– Complete mainspring barrel with arbor
– Barrel arbor
– Center wheel and pinion
– Cannon pinion
– Third, fourth and escape wheels
– Pallet cock and pallet fork
– Balance cock and complete balance assembly
– Balance staff
– Mainspring
– Winding stem
– Setting lever and associated components
– Diashock components
– Jewels, screws and bridge fittings
Technical Specifications
Specification Details
Manufacturer Seiko
Caliber 15A
Movement type Mechanical
Winding Manual
Jewels 21
Frequency 19,800 BPH
Movement dimensions 19.80 × 9.60 mm
Maximum height 3.50 mm
Shock protection Seiko Diashock
Lubrication system Seiko Diafix
Collection Lady Seiko
Production introduction Around 1959
Restoration and Maintenance
When servicing a Seiko 15A movement, watchmakers should carefully inspect the balance assembly, escapement, mainspring and gear train. Proper cleaning, lubrication and adjustment are essential for restoring reliable operation.
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]
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