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General| Movement Type | Automatic |
|---|---|
| Diameter | 25.6 mm |
| Height | 3.6 mm |
| Frequency | 28, 800 vibrations per hour (4 Hz) |
| Jewels | 25 |
| Functions | Hours, Minutes, Seconds, Date |
High-level overview of the SELLITA SW300-1 movement features.
Mandatory use of eye protection during all operations on the movement.
Regulations for waste handling and disposal of materials used with the movement.
Explanation of symbols used in the documentation to prevent material damage.
Precise measurements for overall diameter, case fitting diameter, and movement height.
Description of operational functions including date setting and quick correction.
Details on the winding stem, oscillating weight, and energy reserve.
Specifications for operating frequency, stop-second function, and fine timing.
Instructions for winding the movement using the crown and stem.
Details on the self-winding mechanism and its operation.
Specifications and descriptions of the escape wheel and pallet fork.
Details on the balance wheel, shock absorber, collet, and staff.
The required angle of lift for the balance wheel.
Performance criteria for middle rate and isochronism across various positions.
Maximum and minimum amplitude values for the balance wheel.
Important notes and conditions for measuring movement rates and amplitudes.
Comprehensive list of all movement components with article numbers and descriptions.
Illustrations of individual components for easy identification and reference.
Guide to specific oils, greases, and epilame treatments for movement parts.
Instructions for safely storing and handling volatile lubrication products.
Guidelines for splash lubrication of parts and handling of pre-lubricated components.
Diagram and procedure for assembling the handsetting mechanism.
Illustrations detailing the assembly of the core base movement components.
Diagrams and steps for assembling the automatic winding system.
Illustrations and procedures for assembling the date calendar components.
Instructions for assembling the balance bridge and the oscillating weight.
Detailed steps and precautions for extracting the winding stem from the movement.
Technical drawing of the case frame with critical dimensions and tolerances.
Details on different casing clamp types and their dimensions for assembly.
Diagram showing dial indications, keyhole fixation, and date disc arrangement.
Table detailing different hand fitting heights and corresponding component lengths.
Information on setting stem lengths and ensuring proper crown position in the case.
Description of screwed crown positions for winding, date correction, and time setting.
