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This is a genuine Rolex Caliber 3235-421 pallet fork, a Swiss‑made original component designed for Rolex‘s new‑generation Caliber 3235 automatic movement. As the core element of the Chronergy escapement system, it works with the escape wheel and balance wheel to convert gear train energy into precise oscillating beats, controlling timekeeping accuracy. This original factory part is the ideal replacement for watchmakers to restore stable and precise timekeeping when servicing the 32XX series movements.
Genuine Rolex Part – Swiss factory‑original for Caliber 3235, not a copy.
Chronergy Escapement Core – Patented Chronergy escapement made of nickel‑phosphorus, immune to magnetic interference, with high hardness and wear resistance, delivering 15% greater energy efficiency than traditional Swiss lever escapements.
LIGA Precision Etching – Manufactured using high‑precision LIGA etching technology for superior surface smoothness and lightweight construction, further enhancing power transmission efficiency.
Efficient Bidirectional Winding – Works with the ball‑bearing mounted rotor for stable and reliable winding.
Essential for Service – A common failure point for inaccurate timekeeping, stoppage, or low amplitude; replacing it with this genuine part restores escapement efficiency and accuracy.
Compatible Movements – Designed for Rolex Caliber 3235 automatic and the 32XX family (3230, 3255, 3285, etc.).
| Parameter | Details |
|---|---|
| Part Name | Pallet Fork |
| Part Number | Rolex 3235-421 |
| Compatible Movements | Rolex Caliber 3235, 3230, 3255, 3285 (32XX series automatic) |
| Movement Diameter | 28.50 mm |
| Movement Height | Approx. 6.00 mm |
| Jewels | 31 |
| Frequency | 28,800 vph (4 Hz) |
| Power Reserve | Approx. 70 hours |
| Chronergy Escapement Material | Nickel‑phosphorus (Ni‑P), anti‑magnetic, wear‑resistant |
| Chronergy Efficiency Gain | 15% over traditional Swiss lever escapement |
| Hairspring | Paramagnetic blue Parachrom with Rolex overcoil |
| Shock Protection | Paraflex high‑performance shock absorbers |
| Origin | Switzerland |
| Condition | Brand new, genuine |
Rolex Caliber 3235 automatic movement (found in Datejust 41, Submariner Date 41, Sea‑Dweller, Yacht‑Master 42, etc.).
Rolex Caliber 3230 (no‑date models: Oyster Perpetual, Submariner no‑date).
Rolex Caliber 3255 (Day‑Date 40).
Rolex Caliber 3285 (GMT‑Master II).
Repair of severe timekeeping errors, stoppage, or low amplitude not resolved by routine service.
Replacement of pallet forks with worn pallet stones, bent pivots, or detached jewels during service.
1. Is this a genuine Rolex pallet fork?
Yes. It is a Swiss factory‑original part (3235-421) for 32XX series calibers, not a copy.
2. How is the Chronergy escapement different from traditional escapements?
The Chronergy escapement is a patented Rolex design. The pallet fork and escape wheel are made of nickel‑phosphorus using LIGA etching technology, offering high precision, magnetic immunity, and hardness. The pallet stone thickness is reduced by half, and the escape wheel is skeletonized for reduced mass, resulting in 15% greater energy efficiency than traditional Swiss lever escapements – a key factor enabling the 3235’s 70‑hour power reserve.
3. Which movements does the 3235-421 pallet fork fit?
It fits all Rolex automatic calibers based on the 32XX platform, including Caliber 3235 (date), 3230 (no‑date), 3255 (Day‑Date), and 3285 (GMT‑Master II). The escapement components are identical across the 32XX family and are fully interchangeable. Not compatible with the 31XX series (e.g., 3135).
4. What should I pay attention to during installation?
The pallet fork sits between the mainplate and the pallet bridge. Ensure both pivots drop into jewels and the pallet stones properly engage the escape wheel teeth. Apply a tiny amount of dedicated escapement oil to the pivots. The Chronergy escapement has stringent lubrication and clearance requirements. Strictly follow the Rolex technical guide; professional installation is strongly recommended.
5. Does the escape wheel need to be replaced at the same time?
Not always. If the escape wheel teeth are also visibly worn (deformed or broken), replace both. The nickel‑phosphorus escapement components are highly wear‑resistant, so simultaneous replacement is rarely necessary. However, if wear is observed on the escape wheel during disassembly, replacing both is recommended for optimal escapement performance.
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