Zaria 1956

Description

In the early 1980s, Zaria launched their caliber Zaria 1956, a true quartz movement with Lavet stepper motor. With its height of less than 4mm and its size of 16 x 19.6mm it was already pretty small.

All bearings contained rubies, even those of the center minute wheel. In total eight jewels.

It is noteable, that, probably to save some height, the yoke keyless works were mounted on the movement side, not on the dial side, and there’s also a mechanical hacking function by pulling the crown.

The center minute wheel and the hacking lever are beared under an own cock.

We have a pretty common gear train for a quartz movement: The rotor of the Lavet stepper motor drives a reduction wheel, followed by the center seconds wheel, third wheel and center minute wheel.

The rotor is made as a module, which is inserted into the yokes of the stator, and is fixed with the help of a spring.

The coil of the Lavet stepper is connected with the help of a two contact plates with pin.

The electronics module of the Zaria 1956 uses only three parts, the bonded chip on its upper side, the tiny tuning fork quartz on the bottom and a trimmer capacitor. There’s also a stop pin, which is shortened when the crown is pulled and so additionally to the mechanical hacking, blocks the movement electronically, too.

On the dial side, you can spot the yoke keyless works, which turns freely by inserted crown.

Technical data

Usage gallery