$290.00
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This is a China‑made 6173 crystal and case back press, designed for watchmakers to safely and accurately install watch crystals or snap‑on case backs into cases. Featuring a robust metal construction and a precision rack‑and‑pinion (or screw) mechanism, it converts the rotation of the handle into stable, vertical linear pressure, ensuring even force distribution and preventing damage from uneven manual pressing. Supplied with multiple dies of various sizes, it accommodates a wide range of round crystals and case backs, making it an essential tool on any professional service bench.
Precision rack / screw mechanism: Delivers stable, controllable downward pressure, avoiding impact shocks.
Adjustable height: Ram travel can be set to accommodate different case and crystal thicknesses.
Interchangeable dies: Supplied with multiple nylon or metal dies of various diameters to protect the crystal and case back surfaces.
Cast iron or steel base: Ensures stability and durability during operation.
Wide application: Suitable for round crystals, snap‑on waterproof case backs, and mineral glass installation.
Easy operation: Apply pressure by turning the handle or lever – feel is crisp and controllable.
Cost‑effective: Made in China, significantly more affordable than Swiss equivalents (e.g., Bergeon 5500), ideal for everyday repair tasks.
Q1: Will the bottom die scratch the crystal?
A: The supplied dies are usually made of non‑marring nylon. If metal dies are used, place a thin plastic film or soft cloth between the die and the crystal.
Q2: Can this press be used for domed (curved) crystals?
A: Yes. Some sets include concave dies designed for domed crystals. Without a dedicated die, a flat nylon die can be used with even pressure, but extra care is required.
Q3: What if I apply too much pressure and damage a part?
A: The press is hand‑operated – apply pressure gradually. Stop immediately when significant resistance is felt. Never use additional leverage or a hammer. If damage occurs, replace the broken part and retry with correct pressure.
Q4: What sizes are included in the die set?
A: Typically includes 10‑20 dies ranging from 18mm to 50mm in diameter, often in even increments (e.g., 20, 22, 24, 26…50mm). Check the actual product.
Fast worldwide shipping within 3 business days.
Competitive pricing on Seiko/Hattori calibers.
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