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This is a genuine Rolex original part, the 3235-305 ratchet wheel, a key transmission component located above the mainspring barrel of the Caliber 3235 and other 32XX series automatic movements. Secured to the barrel‘s arbor by a single screw, the ratchet wheel transfers winding energy either from the crown or the bidirectional rotor to the mainspring, making it essential for storing and releasing power to achieve the movement’s signature 70-hour power reserve.
As an authentic Rolex part, it is an indispensable replacement component for the service and repair of 32 series movements, ensuring restored winding efficiency and timekeeping performance.
Genuine Rolex Part – Swiss factory‑original, not a copy, perfect fit for 32XX calibers.
Key Transmission Component – Transfers manual or automatic winding energy to the mainspring, ensuring power reserve.
Core of 70‑Hour Power – Works with the new barrel and Chronergy escapement for long power reserve.
Single Screw Fixing – Secure installation, easy removal for service.
Essential for Service – Replaces worn or damaged ratchet wheel teeth to restore winding efficiency.
| Parameter | Details |
|---|---|
| Part Name | Ratchet Wheel |
| Part Number | Rolex 3235-305 |
| Compatible Movements | Rolex Caliber 3235, 3230, 3285 and other 32XX automatic calibers |
| Function | Transfers winding energy to the mainspring |
| Fixing | Single screw |
| Origin | Switzerland |
| Condition | Brand new, genuine |
Rolex Caliber 3235 (date models: Datejust 41, Submariner Date, Sea‑Dweller)
Rolex Caliber 3230 (no‑date models: Oyster Perpetual, Submariner no‑date)
Rolex Caliber 3285 (GMT‑Master II)
Replacement of worn, broken, or damaged ratchet wheels during movement service
Repair of reduced winding efficiency or inability to wind caused by ratchet wheel failure
1. Is this a genuine Rolex ratchet wheel?
Yes. It is a Swiss factory‑original part (3235-305) for 32XX calibers, not a third‑party copy.
2. What are the symptoms of a damaged ratchet wheel?
Symptoms: manual winding spins freely with no effect; significantly reduced automatic winding efficiency, poor power reserve; unusual noises or slipping during winding.
3. What should I pay attention to during installation?
The ratchet wheel is secured to the barrel arbor by a single screw. Clean the threads and apply a tiny amount of threadlocker. Use the recommended torque. Professional installation is strongly advised.
4. Does this ratchet wheel fit Caliber 3135?
No. The 32XX series has a different barrel design; the ratchet wheel is not interchangeable with 3135.
5. Does the ratchet wheel require lubrication after replacement?
The ratchet wheel itself is not typically lubricated, but the arbor screw may receive a micro drop of thread lubricant. After installation, test manual and automatic winding for smooth operation.
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