Landeron 185 Watch Spare Parts: Comprehensive Guide for Collectors and Watchmakers
The Landeron 185 is a Swiss manual wind chronograph movement based on the popular Landeron 148 calibre, distinguished by the addition of a calendar device. Introduced in the 1960s, this movement measures approximately 13.75 lignes (31 mm diameter) with a height of about 6.2 mm. It contains 17 jewels and operates at 18,000 vibrations per hour (vph), offering a power reserve of around 41 hours. The addition of a calendar complication makes it more complex, yet it retains the reliable cam-switch system characteristic of the Landeron family.
Key Technical Specifications
Calibre: Landeron 185
Type: Manual wind chronograph with calendar
Diameter: 13.75 lignes (31 mm)
Height: 6.2 mm
Jewels: 17
Frequency: 18,000 vph
Power Reserve: Approximately 41 hours
Functions: Chronograph (central seconds, 30-minute counter, small seconds), calendar complication
Switch System: Cam-actuated, no column wheel
Common Spare Parts
Chronograph Runner & Bridge: Critical for precise chronograph operation
Cam Levers & Reset Hammers: Facilitate accurate start, stop, reset of chronograph functions
Calendar Mechanism Components: Date jumper, date driving wheel, calendar springs
Balance Staff: Essential for stable oscillation and accuracy
Mainspring & Barrel: Swiss NOS or authentic replacements for consistent power
Pallet Fork & Escape Wheel: Ensure smooth escapement functioning
Pushers & Return Springs: Reliable tactile chronograph and calendar control
Jewels & Bearings: Reduce friction and wear for longevity
Hands: Original chronograph and calendar compatible hands
Maintenance and Sourcing Tips
Verify Landeron 185 markings on the movement before ordering parts
Source New Old Stock (NOS) or authentic Swiss parts for best fit and durability
Employ expert chronograph and calendar specialists for servicing and complex repairs
Importance of Genuine Spare Parts
Maintains precise timekeeping and chronograph/calendar operation
Preserves the historical and collector value of the watch
Supports expert restoration and ensures lasting performance
Using genuine Landeron 185 spare parts is critical for maintaining this classic cam-switch chronograph with calendar complication, a valued piece in vintage 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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