BFG 866 Date Disk 2557/2-2 Function

The BFG 866 Date Disk 2557/2-2 is a calendar component designed for use in the BFG 866 watch movement. Its primary function is to display the current date through the date window positioned at 3 o’clock while operating as part of the movement’s calendar mechanism.

The BFG 866 Date Disk 2557/2-2 rotates incrementally once every 24 hours through the action of the date-driving components inside the movement. Each numeral is precisely positioned around the disk to ensure correct alignment within the date aperture.

The white disk combined with red numbers provides strong visual contrast and a distinctive appearance, making the date display easy to read while preserving the original design characteristics of compatible watches.

Accurate operation of the BFG 866 Date Disk 2557/2-2 is essential for maintaining proper calendar functionality and correct date indication.

BFG 866 Date Disk 2557/2-2 Construction

The BFG 866 Date Disk 2557/2-2 is manufactured as a precision calendar component specifically designed for BFG 866 movement applications.

Key construction features include:

• Part Number 2557/2-2
• White date disk
• Red printed numbers
• Date display at 3 o’clock
• Precision indexing profile
• Swiss movement compatibility

The disk is engineered to engage correctly with the date-driving wheel and calendar mechanism, ensuring smooth advancement during both automatic date changes and manual date correction operations.

Because calendar components operate within tight dimensional tolerances, precise manufacturing is necessary to maintain proper alignment and readability.

The BFG 866 Date Disk 2557/2-2 is produced according to the specifications required for the original movement design.

BFG 866 Date Disk 2557/2-2 Use in Watch Repair

The BFG 866 Date Disk 2557/2-2 is commonly used during watch servicing, restoration, and calendar repair projects.

Common reasons for replacement include:

• Worn printing
• Scratches
• Corrosion
• Water damage
• Calendar malfunction
• Broken indexing profile
• Cosmetic restoration
• Missing original part

Professional watchmakers frequently replace date disks during movement overhauls when restoring watches to their original appearance and functionality.

Installing a replacement BFG 866 Date Disk 2557/2-2 helps restore proper date display alignment and reliable calendar operation.

The component is especially valuable during restoration of vintage or discontinued movements where maintaining original specifications is important.

BFG 866 Date Disk 2557/2-2 Specifications

The BFG 866 Date Disk 2557/2-2 is manufactured specifically for BFG 866 movement applications.

Key specifications include:

• Compatible with BFG 866
• Part Number: 2557/2-2
• Date disk component
• Date display at 3 o’clock
• White disk
• Red numbers
• Calendar mechanism component
• Swiss movement application

Before installation, technicians should inspect the date-driving wheel, jumper spring, and surrounding calendar components for wear or damage.

Proper installation helps ensure accurate date positioning and smooth advancement.

BFG 866 Date Disk 2557/2-2 Reliability

The BFG 866 Date Disk 2557/2-2 is designed to provide dependable long-term calendar operation within compatible movements.

Routine servicing should include inspection of:

• Printed numerals
• Indexing profile
• Calendar mechanism
• Date-driving components
• Alignment surfaces

Maintaining the calendar system in proper condition helps preserve accurate date display and reliable operation.

When correctly installed and maintained according to professional watchmaking standards, the BFG 866 Date Disk 2557/2-2 provides dependable long-term performance and consistent date indication.

Technical Specifications

• Manufacturer: BFG
• Compatible Movement: BFG 866
• Part Number: 2557/2-2
• Part Type: Date Disk
• Date Position: 3 O’Clock
• Disk Color: White
• Number Color: Red
• Origin: Switzerland

Features

• Compatible with BFG 866 movement
• Part No. 2557/2-2
• White date disk
• Red printed numbers
• Date display at 3 o’clock
• Precision calendar component
• Suitable for restoration projects

Function and Purpose

Designed to display the current date and operate as part of the calendar mechanism within compatible BFG 866 watch movements.

Compatibility

Compatible with:

• BFG 866 watch movement
• Matching calendar assemblies

Compatibility should always be verified before purchase.

Professional Use

Suitable for:

• Professional watchmakers
• Watch repair workshops
• Movement restoration specialists
• Vintage movement servicing
• Spare parts inventory

Build Quality

Precision-manufactured Swiss calendar component engineered for accurate alignment, smooth operation, and compatibility with original BFG 866 specifications.

Long-Term Reliability

Designed for dependable long-term calendar performance when properly installed and maintained according to professional watchmaking standards.

Shipping & Delivery

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