ETA 7750-450 Time Setting Gear

Product Description

Genuine ETA 7750-450 Time Setting Gear, Made in Switzerland, brand new — the original factory gear component for the ETA/Valjoux 7750 chronograph movement’s time-setting mechanism. Precisely engineered to transmit rotational motion from the intermediate setting wheel to the minute wheel, the Time Setting Gear completes the final gear stage of the time-setting train for accurate hour and minute adjustment. An essential replacement part for restoring worn or damaged time setting gear during movement service. Original ETA part — the professional’s choice for genuine time-setting restoration.

Features & Function

• Genuine ETA 7750-450 — original Swiss-made factory part, brand new, authentic, part number 7750-450
• Time setting gear — final gear stage in the time-setting train, transmitting motion from intermediate setting wheel to minute wheel
• Precise gear mesh — engineered with exact tooth profile for smooth, reliable engagement in the setting train
• Critical time-setting component — essential for accurate hour and minute hand adjustment when the crown is pulled out
• Original factory quality — exact dimensional specifications for perfect fit in the ETA/Valjoux 7750 movement

Specifications

Applications

• Replacement of worn, damaged, or stripped Time Setting Gear in the ETA/Valjoux 7750 movement
• Repair of time-setting failures: hands not moving when crown turned, slipping, or grinding in setting mode
• Professional movement service, overhaul, and chronograph restoration
• Certified watchmaker and service center parts supply
• Restoration of 7750-based chronograph movements (IWC, Omega, Tag Heuer, Breitling, and other brands using 7750)

FAQ

Q1: Is this a genuine ETA part?
A: Yes — this is a genuine ETA 7750-450 Time Setting Gear, Made in Switzerland, brand new. It is an original factory part from ETA (Swatch Group), the world’s leading movement manufacturer. Not a generic or replica part.

Q2: How do I confirm this part fits my movement?
A: Confirm your movement is an ETA/Valjoux 7750 chronograph. The part number 7750-450 is the specific Time Setting Gear for this movement. Common brand applications include: IWC Portugieser Chronograph, Omega Speedmaster (older 7750 variant), Tag Heuer Monaco, Breitling Navitimer, and many other chronographs using the Valjoux/ETA 7750 platform.

Q3: How does the Time Setting Gear fit in the setting train?
A: The Time Setting Gear (7750-450) is the penultimate gear in the time-setting train — the gear right before the minute wheel. The complete setting train in the 7750 chronograph is: Crown → Yoke → Setting Wheel → Intermediate Setting Wheel (7750-453) → Time Setting Gear (7750-450) → Minute Wheel → Cannon Pinion → Minute Hand. The Time Setting Gear is the critical link that bridges the intermediate wheel and the minute wheel. Without it, time-setting breaks completely.

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