Rolex 3135-310 Complete Barrel

Product Description

The Rolex 3135-310 Complete Barrel is a genuine Swiss-made mainspring barrel assembly designed for the Rolex Calibre 3135 automatic movement. This ready-to-install unit includes the mainspring, barrel arbor, and barrel drum as a single assembly, providing a drop-in replacement to restore consistent power delivery and reliable running performance. It is a vital component for maintaining the movement’s approximately 50-hour power reserve.

Features & Function

• Genuine Rolex part – authentic Swiss-made component for Calibre 3135

• Complete assembly – includes mainspring, arbor, and barrel drum

• Ready-to-install – simplifies servicing, no separate mainspring fitting required

• Restores power reserve – ensures consistent torque output for stable amplitude and accuracy

• Precision-engineered – manufactured to Rolex’s exacting specifications

Specifications

• Part Number: 3135-310

• Compatible Movements: Rolex Calibre 3135, 3130, 3175, 3185, 3186

• Part Type: Complete mainspring barrel assembly (barrel + mainspring + arbor)

• Origin: Switzerland (genuine Rolex factory part)

• Power Reserve Supported: Approx. 50 hours (3135 spec)

• Condition: Brand new / New Old Stock (NOS)

Applications

• Service and overhaul – replacing barrel assembly during full movement servicing

• Power reserve issues – addressing slipping or weakened mainspring conditions

• Restoration – restoring Submariner, Datejust, and other Oyster models

• Preventive maintenance – during routine service intervals

• Suitable for professional watchmakers and authorized service centers

FAQs

1. Is this an original Rolex part?
Yes, this is a genuine Rolex factory part (reference 3135-310), manufactured in Switzerland. It is guaranteed to be 100% authentic.

2. Which movements is this barrel compatible with?
This barrel is compatible with Calibre 3135, 3130, 3175, 3185, and 3186 movements. Please verify your movement caliber before ordering.

3. Is the mainspring pre-installed in this barrel?
Yes, this is a complete barrel assembly – the mainspring and arbor are pre-installed. It is ready to be fitted directly into the movement.

Why Choose SOFLY Watch Parts?

• Fast worldwide shipping within 3 business days.

• Competitive pricing on Seiko/Hattori calibers.

• 3,000+ watch movements and parts in stock.

• Trusted by watchmakers worldwide.

• Personalized sourcing support via [email protected] or WhatsApp +86 18620212114.