ETA 7750-2543 Intermediate Date Wheel

Product Description

Genuine ETA 7750-2543 Intermediate Date Wheel, Made in Switzerland, brand new — the original factory intermediate gear component for the ETA/Valjoux 7750 chronograph movement’s date mechanism. Precisely engineered to receive motion from the date indicator driving wheel and transmit it to advance the date display by one position, the Intermediate Date Wheel bridges the power transmission between the date driving gear and the date indicator disc. An essential replacement part for restoring a worn or damaged intermediate date wheel during movement service. Original ETA part — the professional’s choice for genuine date mechanism restoration.

Features & Function

• Genuine ETA 7750-2543 — original Swiss-made factory part, brand new, authentic, part number 7750-2543
• Intermediate date wheel — receives motion from the date driving wheel and transmits it to advance the date indicator disc
• Date mechanism bridging gear — links the date driving mechanism to the date display for reliable date advancement
• Precision-machined gear teeth — exact tooth profile for smooth, accurate date stepping at midnight
• Original factory quality — exact dimensional and pivot specifications for perfect fit in the ETA/Valjoux 7750 movement

Specifications

Applications

• Replacement of worn, damaged, or stripped Intermediate Date Wheel in the ETA/Valjoux 7750 movement
• Repair of date mechanism failures: date not advancing, date skipping, or erratic date jumping
• Repair of gear train issues: intermediate wheel slipping, tooth damage, or engagement failure
• Professional movement service, overhaul, and chronograph restoration
• Certified watchmaker and service center parts supply

FAQ

Q1: Is this a genuine ETA part?
A: Yes — this is a genuine ETA 7750-2543 Intermediate Date Wheel, 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 7750-2543 is the specific Intermediate Date Wheel 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: What does the Intermediate Date Wheel do?
A: The Intermediate Date Wheel (7750-2543) is the intermediate gear in the date mechanism that receives motion from the date driving wheel and transmits it to advance the date indicator disc. The date mechanism gear train is: Motion work → Date Indicator Driving Wheel → Intermediate Date Wheel → Date Indicator Disc. The intermediate date wheel translates the continuous rotation of the driving wheel into the stepwise advancement of the date display — one tooth position per day. At midnight, the date jumper spring pushes against the advancing date disc and locks it in the next position. Without a functioning intermediate date wheel, the date cannot advance because there is no gear linkage to drive the date disc.

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