ETA 7750-1488/1535 Reversing Wheel

Product Description

The ETA 7750-1488/1535 Reversing Wheel is a genuine Swiss-made component for the ETA/Valjoux 7750 automatic chronograph movement. As a critical part of the automatic winding system, the reversing wheel transmits motion from the rotor to the mainspring while disengaging during manual winding to prevent rotor spin. This enables the unidirectional winding characteristic of the 7750 movement and is a common service replacement part when winding issues arise .

Features & Function

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

• Automatic winding system component – transmits rotor motion to the mainspring for self-winding 

• Unidirectional winding support – enables the 7750’s characteristic clockwise-only winding 

• Disengages during manual winding – prevents rotor from spinning when winding by hand 

• Direct replacement – drop-in replacement for worn or sticking reversers 

Specifications

• Part Number: 7750-1488 / 1535 (compatible references) 

• Compatible Movement: ETA/Valjoux 7750 (also 7751, 7753, 7754 variants) 

• Function: Automatic winding reverser 

• Winding Type: Unidirectional (clockwise only) 

• Power Reserve: ~42–48 hours 

• Origin: Switzerland (ETA factory part)

• Condition: Brand new

Applications

• Service and overhaul of ETA 7750-series movements 

• Automatic winding repair – replacing worn or sticking reversers 

• Addressing rotor spin issues – resolving rotor movement during manual winding 

• Restoring winding efficiency – ensuring smooth automatic and manual winding 

• Suitable for professional watchmakers and experienced repair technicians

FAQs

1. Is this a genuine ETA part?

Yes, this is a genuine ETA factory part, made in Switzerland. It is not an aftermarket or generic copy .

2. Which movements is this reversing wheel compatible with?

This reversing wheel is designed for the ETA/Valjoux 7750 and its variants, including 7751, 7753, and 7754 .

3. What are the signs that the reversing wheel needs replacement?

Common signs include stiff manual winding, rotor spinning during hand-winding, reduced automatic winding efficiency, or visible wear/damage during inspection .

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