ETA 7750-243 Free Cannon Pinion

Product Description

The ETA 7750-243 Free Cannon Pinion is a genuine Swiss-made component for the ETA/Valjoux 7750 automatic chronograph movement. As part of the motion work, the free cannon pinion transmits power from the gear train to the minute hand, enabling smooth and accurate time display . This brand new original part is essential for watchmakers restoring proper hand-setting function and timekeeping accuracy when the original component becomes worn or damaged.

Features & Function

• Genuine ETA/Valjoux part – authentic Swiss-made component for the ETA 7750 movement

• Motion work component – transmits power from the gear train to the minute hand

• Critical for hand-setting – ensures smooth and accurate time display

• Direct replacement – drop-in replacement for worn or damaged cannon pinions

• Precision-engineered – manufactured to ETA’s original specifications

Specifications

• Part Number: 7750-243 / 243

• Compatible Movements: ETA/Valjoux 7750, 7751, 7753, 7754, 7756, 7760, 7765

• Function: Motion work – drives the minute hand

• Caliber Diameter: 30.0 mm

• Caliber Height: 7.9 mm

• Jewels: 25

• Frequency: 28,800 vph (4 Hz)

• Power Reserve: ~46 hours

• Origin: Switzerland (ETA factory part)

• Condition: Brand new

Applications

• Service and overhaul of ETA 7750-series movements

• Motion work repair – replacing worn or damaged cannon pinions

• Hand-setting restoration – ensuring smooth and accurate time setting

• Suitable for professional watchmakers and experienced repair technicians

FAQs

1. Is this a genuine ETA part?

Yes, this is a genuine ETA factory part (reference 7750-243), made in Switzerland. It is not an aftermarket or generic copy.

2. Which movements is this free cannon pinion compatible with?

This free cannon pinion is compatible with the ETA/Valjoux 7750 and its variants, including 7751, 7753, 7754, 7756, 7760, and 7765.

3. What is the function of the free cannon pinion?

The free cannon pinion is part of the motion work that transmits power from the gear train to the minute hand, enabling smooth and accurate time display and hand-setting function.

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