Ticking quartz clock movement Sangtai 6168 — for dials up to 12 mm

Shaft 21 mm · Thread 14.5 mm.
Measure shaft length from the front face of the case to the tip of the shaft. Schematic side view; hand fitting details are simplified.

**Order of the hands**
1. Hour · 2. Minute · 3. Second, if used

**Hand alignment**
Align with 12 when fitting. The hands must be parallel and must not touch each other.

How to measure hand length

Measure from the shaft centre to the tip of the hand.

Length and balance

Length alone does not determine the load on the movement. Both the hour and minute hands must be well balanced.

Without a second hand

The movement can also be used with just hour and minute hands. A second-hand cap can give the centre a neat finish when no second hand is fitted.

Clearance between hands

The hands must be parallel to the dial. Throughout their movement, they must not touch one another, the dial or the glass.

Assembly steps

Remove the battery before assembly.

1. Check the dial and hands. The dial thickness must suit the selected variant. Check the fitting type, mounting hole size and hand length. Remove any protective film from the hands before assembly.

2. Secure the movement gently. Do not overtighten the nut with a spanner or pliers: this can deform the case or break the threaded section and stop the movement. A couple of strips of double-sided tape can provide additional support; they do not replace the nut or selected centre nut. Do not force the case into a tight recess. Allow room for possible movement of the dial material.

3. Fit the hands without force. They must not touch each other, the dial or the glass. If fitting a second hand, press it on only far enough that a gentle pull will not dislodge it. Pressing too hard can displace the metal shaft and stop or permanently damage the movement. Fit the hour hand first, then the minute hand and, if used, the second hand. Align them with 12 when fitting.

4. Consider the clock's weight and hanging method. Both plastic and metal hangers have load limits. Excessive load can deform the movement case and affect operation. Use a separate hanger, independent of the movement, for a heavy clock.

5. Check a full movement cycle. Use the time-setting wheel on the back of the movement to advance the hour and minute hands through a complete 12-hour cycle. Do not turn the hands directly. After inserting the battery, check operation in the clock's intended position; if a second hand is fitted, also watch one full revolution.

Download assembly instructions (PDF)

Sangtai 6168 is a ticking quartz movement with Roundshaft hand fittings. A budget model. This variant is suitable for dials up to 12 mm thick.

Expected AA battery life: approximately 12 months. Actual life depends on the battery and conditions of use.

The second hand advances in steps with a characteristic tick.

Compatible with all Roundshaft hands in our range. Choose hand length and balance according to the guidance for the specific movement.

How to choose a clock movement

Compatibility and fitting
Model	STM12
Dial thickness	Up to 12 mm
Shaft length	21 mm (from front face of case to shaft tip)
Thread length	14.5 mm
Hand fitting	Roundshaft
Hanger	No
Case dimensions	56 × 56 × 16 mm
Dial mounting hole	8–10 mm
Hands and drive
Minute hand length (manufacturer's limit)	Up to 150 mm (from shaft centre to tip)
Minute shaft torque	≥ 200 µN·m
Operation and power
Battery	AA, 1.5 V
Battery life	approximately 12 months
Operating voltage	1.3–1.7 V
Stated accuracy	±30 seconds per month at 1.5 V and +25 °C