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This is a genuine Rolex Caliber 2236-315 barrel complete, a Swiss‑made original component designed for the Rolex 2236 automatic movement. As a pre‑assembled unit containing the mainspring, it ensures reliable power storage and release, providing the movement with approximately 55 hours of power reserve. This original factory part is the ideal choice for restoring winding functionality and timekeeping accuracy when servicing the 2236 caliber.
Genuine Rolex Part – Swiss factory‑original for Caliber 2236, not a copy.
Pre‑assembled Barrel – Includes barrel drum, mainspring, and arbor; eliminates manual winding risks.
Compatible with Syloxi Hairspring – Works with the 2236’s Syloxi silicon hairspring system for anti‑magnetic, temperature‑stable precision.
55‑Hour Power Reserve – Keeps the watch running over a weekend when taken off.
Essential for Service – Efficient solution for tired, broken mainsprings or worn barrel walls.
| Parameter | Details |
|---|---|
| Part Name | Barrel Complete |
| Part Number | Rolex 2236-315 |
| Compatible Movement | Rolex Caliber 2236 automatic (ladies‘ Datejust 28mm, etc.) |
| Function | Stores and releases mainspring energy for approx. 55h power reserve |
| Included | Barrel drum, mainspring, arbor |
| Feature | Works with Syloxi silicon hairspring |
| Origin | Switzerland |
| Condition | Brand new, genuine |
Rolex Caliber 2236 automatic (e.g., ladies‘ Datejust 28mm ref. 279160, 279171)
Replacement of tired, broken, or low‑torque mainsprings during movement service
Fixes insufficient power reserve or low amplitude caused by mainspring issues
Quick replacement of the barrel assembly without separate mainspring winding
1. Is this a genuine Rolex barrel?
Yes. It is a Swiss factory‑original part (2236-315) for Caliber 2236, not a copy.
2. What is special about the 2236 barrel?
The 2236 movement uses a Syloxi silicon hairspring, and its barrel is designed to provide stable torque and a 55‑hour power reserve.
3. What should I pay attention to during installation?
Clean the barrel arbor hole in the mainplate, apply a small amount of barrel grease. Seat the barrel correctly, ensuring it engages the train. Professional installation is recommended.
4. When should I replace the entire barrel instead of just the mainspring?
If the barrel drum is worn, the arbor hole is oval, or the mainspring is severely deformed, replace the complete barrel assembly. It is also more convenient than hand‑winding a new spring.
5. Does this barrel fit other Rolex calibers like 2235?
No. Caliber 2236 is an upgraded version with a silicon hairspring and a redesigned barrel – not interchangeable with 2235.
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