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The Generic Omega Calibre 9300 Winding Stem is an aftermarket replacement component designed for the Omega Calibre 9300 automatic chronograph movement family. This precision-machined stem serves as the critical mechanical link between the crown and the movement‘s keyless works, enabling manual winding via the crown (position 1) as well as time-zone adjustment and precise time-setting via the second and third crown positions. As a practical alternative to genuine OEM parts, it offers professional watchmakers and repair enthusiasts a reliable solution for restoring worn or damaged original stems without the premium pricing associated with factory components.
Wide 9300 family compatibility – Precision-engineered to fit the Omega Calibre 9300 movement family, including Calibres 9300, 9301 (gold rotor and bridge), 9900, and 9901 (METAS-certified), all of which share the same keyless works architecture and stem interface.
Three-position crown operation – Supports three distinct crown positions: Position 1 (normal wearing/manual winding), Position 2 (time-zone adjustment and date correction), and Position 3 (precise time-setting with seconds hand stop/hacking function).
Durable steel construction – Manufactured from solid, high-grade steel with precision-ground threads to withstand repeated winding cycles and ensure long-term wear resistance.
Seamless compatibility – Designed as a direct drop-in fit replacement for worn or damaged original stems, requiring no modification to the movement‘s keyless works.
Cost-effective restoration – Provides a reliable, readily available alternative to expensive genuine OEM parts for routine movement overhauls, professional servicing, and daily-wear restorations.
| Parameter | Value |
|---|---|
| Caliber Family | Omega Calibre 9300 / 9301 / 9900 / 9901 |
| Genuine OEM Part Number | 9300-201 (winding stem) |
| Crown Positions | 3 (winding / time zone + date / time-setting with hacking) |
| Material | High-grade steel |
| Movement Diameter | 32.5 mm (9900 base) |
| Movement Jewels | 54 |
| Movement Frequency | 28,800 vph (4 Hz) |
| Power Reserve | Approx. 60 hours |
| Escapement | Co-Axial |
| Hairspring | Silicon Si14 |
| Origin | Swiss-made |
| Product Type | Aftermarket replacement part / Generic part |
| Unit Quantity | 1 piece per order |
Replacement of worn, broken, or damaged winding stems during professional servicing of Omega watches powered by Calibre 9300 and its family variants, including Seamaster Planet Ocean Chronograph references (232.30.46.51.01.001, 232.30.46.51.01.002, 232.90.46.51.03.001, etc.), Speedmaster Moonwatch Co-Axial Chronograph 44.25mm references (311.30.44.51.01.002, etc.), Speedmaster Dark Side of the Moon, and DeVille Chronograph models.
Servicing of Calibre 9301 (gold rotor and bridge, found in gold Speedmaster models) and Calibre 9900/9901 (METAS-certified Master Chronometer successors) that share the same winding stem interface.
Independent watch repair centers and service workshops performing movement overhauls that require disassembly of the keyless works and crown stem replacement.
Restoration of pre-owned Omega timepieces where original stem threads are stripped, the stem is bent or broken, crown function is compromised, or the watch no longer holds a wind effectively.
Q1: Is this winding stem an authentic genuine Omega part?
No, this is a generic aftermarket replacement product, not manufactured by Omega. It is designed to meet the compatible specifications for the Calibre 9300 family and should not be confused with genuine OEM components. However, it is a cost-effective alternative for routine repairs and restorations.
Q2: Which calibers and watch models is this generic stem compatible with?
This generic stem is designed to fit the entire Calibre 9300 movement family, including 9300 (standard), 9301 (gold rotor and bridge), as well as the METAS-certified successors 9900 and 9901. All share the same keyless works and winding stem interface. It is compatible with a wide range of Omega models, including Seamaster Planet Ocean Chronograph (45.5mm references), Speedmaster Moonwatch Co-Axial Chronograph (44.25mm), Speedmaster Dark Side of the Moon, and DeVille Chronograph collections. Always verify compatibility with your specific movement reference before purchase.
Q3: What is the quality of this generic replacement stem?
As a generic aftermarket product, quality can vary between suppliers. Our replacement stems are manufactured from high-grade steel with precision-ground threads and are designed to meet the mechanical specifications for reliable winding, time-zone, and time-setting functions. For museum-grade restorations requiring absolute factory authenticity, genuine OEM parts are recommended; for routine servicing, daily-wear restoration, and independent repair work, a quality generic stem from a reputable supplier offers a practical and reliable solution.
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