Ronstan Series 20 Ball Bearing Orbit Block - Single - Dyneema Lashing - Becket Option

The Series 20 Ball Bearing Orbit Block™ delivers exceptional strength and lightweight performance, making it an indispensable component for your sailing and rigging needs. Capable of handling loads up to 250kg (550lb) while weighing only 9 grams, this orbit block ensures reliable and efficient line management in all marine applications.

Outstanding Features

• Heavy-Duty Stainless Steel Hub: Ensures secure attachment for lashing and seamless integration with through-sheave becket systems.
• Versatile Lashing Compatibility: Supports lashing up to 4mm (5/32") for a variety of setup configurations.
• Included Dyneema Lashing: Comes with 750mm (30") of premium Dyneema lashing, 1.7mm (1/16") in diameter, providing high strength and reliability.
• Precision Ball Bearings: Engineered for smooth operation and optimal load distribution, enhancing overall performance.
• Corrosion-Resistant Construction: Made from marine-grade materials to withstand harsh marine environments and ensure long-lasting durability.

Technical Specifications

Load Capacity	250kg (550lb)
Weight	9 grams
Lashing Compatibility	Up to 4mm (5/32")
Included Lashing	750mm (30") Dyneema, 1.7mm (1/16") diameter
Materials	Stainless Steel, Carbon Acetal, Nylon

Ideal for Marine Applications

• Control Line Management: Perfect for handling control lines on dinghies and catamarans, accommodating lengths up to 5 meters (16 feet).
• Lightweight Rigging: Essential for setups where minimizing weight while maintaining high strength is crucial.
• Sailing and Boating Operations: Provides reliable and efficient line management for various sailing and boating tasks.

Premium Construction Materials

• Sheave: Made from high compression strength carbon acetal, offering exceptional durability and performance.
• Ball Bearings: Crafted from stainless steel to resist corrosion and minimize wear, ensuring smooth operation.
• Frame/Cheeks: Built with robust nylon construction, providing the perfect balance of strength and flexibility.

Download the Series 20 Orbit Block Brochure (PDF)

Orders of physical products placed by 3 PM EST M-F typically ships the same day, if all requested items are in stock. Weekend orders will typically ship on Monday.

Shipping takes 2-7 days.

We currently ship to the Contiguous 48 States.

Life of Sailing merch is custom made for the customer after an order is placed. Total turnaround is typically 7-14 days from order to doorstep.