Rolex watch mainspring 2230/2235 movement, Swiss made

Product Description

Swiss-made generic replacement mainspring for Rolex automatic calibers 2230 (no-date) and 2235 (date), crafted from premium alloy. Delivers precise torque output and excellent fatigue resistance for reliable performance. Compared with the earlier 2130 movement’s 1.23 mm spring, this is widened to 1.46 mm with a larger barrel arbor — providing more stable torque, improved shock resistance, and maintaining the movement’s ~42-hour power reserve and COSC chronometer precision.

Features & Function

• Swiss-made generic mainspring — premium alloy, manufactured in Switzerland to professional standards
• For Rolex 2230 & 2235 — covers no-date and date automatic calibers
• Widened 1.46 mm design — larger than 2130’s 1.23 mm spring, with increased barrel arbor
• Stable torque & shock resistance — more stable output and improved anti-shock performance
• 42-hour power reserve & COSC precision — maintains chronometer-grade accuracy

Specifications

Applications

• Replacing worn or broken mainsprings in Rolex 2230 and 2235 movements
• Professional movement servicing and overhaul with stable torque output
• Certified watchmaker and repair technician professional part supply
• Watch repair workshop and service center equipment
• Restoring ~42-hour power reserve and COSC chronometer precision

FAQ

Q1: Is this a genuine Rolex mainspring?
A: No — this is a Swiss-made generic replacement mainspring for Rolex 2230 & 2235 calibers. It is not manufactured by Rolex S.A., but made in Switzerland from premium alloy to professional watchmaking standards.

Q2: Which movements does it fit?
A: This mainspring is designed for the Rolex caliber 2230 (no-date) and 2235 (date) automatic movements — please confirm your movement reference before ordering.

Q3: How does it differ from the 2130 mainspring?
A: This spring is widened to 1.46 mm (vs the 2130’s 1.23 mm) with a larger barrel arbor — delivering more stable torque output and improved shock resistance while maintaining the ~42-hour power reserve.

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