ETA 7750-8000 Chronograph Wheel

Product Description

The ETA 7750-8000 Chronograph Wheel is a genuine Swiss-made component for the ETA/Valjoux 7750 automatic chronograph movement. This precision wheel forms part of the chronograph mechanism, responsible for recording elapsed seconds during timing operations. It is a common service replacement part when chronograph performance becomes irregular or unresponsive .

Features & Function

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

• Chronograph mechanism component – records elapsed seconds during timing operations

• Critical for chronograph accuracy – ensures precise and reliable stopwatch function

• Direct replacement – drop-in replacement for worn or damaged chronograph wheels

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

Specifications

• Part Number: 7750-8000

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

• Function: Chronograph seconds recording (60-second counter)

• Caliber Diameter: 30.0 mm 

• Caliber Height: 7.9 mm 

• Jewels: 25 

• Frequency: 28,800 vph (4 Hz) 

• Lift Angle: 52° 

• Power Reserve: ~46 hours 

• Origin: Switzerland (ETA factory part) 

• Condition: Brand new

Applications

• Service and overhaul of ETA 7750-series movements

• Chronograph mechanism repair – replacing worn or damaged chronograph wheels

• Chronograph function restoration – resolving inaccurate or intermittent stopwatch performance

• 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 7750-8000), made in Switzerland . It is not an aftermarket or generic copy.

2. Which movements is this chronograph wheel compatible with?
This chronograph wheel 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 chronograph wheel?
This wheel is part of the chronograph mechanism that records elapsed seconds during timing operations. It engages when the chronograph is started and drives the chronograph seconds hand .

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