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This is a genuine Rolex oscillating weight (rotor) for Caliber 3230 and 3235, part number 3235-570, Swiss‑made. The rotor is the core component of the automatic winding system, converting wrist motion into energy to power the mainspring via the reversing wheel train. This original factory part is the ideal choice for restoring efficient automatic winding function when servicing 32XX series movements.
Genuine Rolex Part – Swiss factory‑original for Caliber 3230/3235, not a copy.
High‑Efficiency Automatic Winding – Ball‑bearing design for smooth rotation, supports 70‑hour power reserve.
Precision‑Balanced Weight – High‑density platinum or gold perimeter weight (depending on model) for low friction and high inertia.
Essential for Service – Replace when bearing wear, rough rotation, or reduced winding efficiency occurs.
Compatible Movements – Designed for Rolex Caliber 3230 (no‑date), 3235 (date), and derivatives (e.g., 3285).
| Parameter | Details |
|---|---|
| Part Name | Oscillating Weight (Rotor) |
| Part Number | Rolex 3235-570 |
| Compatible Movements | Rolex Caliber 3230, 3235 (and 32XX series like 3285) |
| Function | Converts wrist motion into automatic winding energy |
| Material | Main body: tungsten alloy or steel; perimeter weight: gold or platinum (varies by model) |
| Bearing Type | Ball bearing |
| Origin | Switzerland |
| Condition | Brand new, genuine |
Rolex Caliber 3230 (no‑date Submariner, Oyster Perpetual)
Rolex Caliber 3235 (date models: Datejust 41, Submariner Date, Sea‑Dweller)
Rolex Caliber 3285 (GMT‑Master II)
Repair of reduced automatic winding efficiency, noisy rotor, bearing wear, or rotor rubbing against bridges
1. Is this a genuine Rolex rotor?
Yes. It is a Swiss factory‑original part (3235-570) for 32XX calibers, not a copy.
2. What are the symptoms of a damaged rotor?
Symptoms: noticeable grinding or scraping noise when the rotor spins; very poor automatic winding (low power reserve); loose rotor or excessive axial play.
3. What should I pay attention to during installation?
The rotor is secured by a central screw. Clean the bearing and arbor, then tighten to the torque specified in the Rolex technical guide (special tool required). Professional installation is strongly recommended.
4. Does this rotor fit 31XX calibers like 3135?
No. The 32XX rotor has different dimensions, bearing design, and mounting – not interchangeable.
5. How should the rotor be maintained?
During regular service, a watchmaker will remove the rotor, clean the bearing, and apply dedicated lubricant. Avoid strong impacts to prevent bearing deformation.
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