Ronstan Series 40 Ball Bearing Block - Double - Swivel Head

The Series 40 Ball Bearing Block - Double - Swivel Head is engineered for superior performance and reliability in marine applications. Designed to withstand the rigorous demands of boating and sailing, this block ensures smooth operation and longevity for your vessel's rigging systems.

Key Features

• Advanced Bearing System: Utilizes low friction Acetal or Torlon® ball bearings for enhanced durability and performance.
• Lightweight Design: Minimizes overall weight without compromising strength, ideal for maintaining balance and efficiency on board.
• Easy Maintenance: Cheek cut-outs allow for straightforward access and maintenance of the bearing system, reducing downtime.
• Swivel Shackle Head: Enables full 360° rotation, providing maximum flexibility and ease of movement for all types of rigging lines.
• 2-Stage Ball Bearing: Ensures consistent performance across the entire load range, enhancing the block's reliability under varying conditions.

Technical Specifications

Parameter	Specification
Bearing Material	Acetal or Torlon®
Load Capacity	Consistent across full load range
Rotation	360° Swivel
Applications	Mainsheet, Halyard, Vang, Spinnaker Control Lines
Suitable For	Off-the-Beach Catamarans, One Design Classes, Sportsboats up to 8m (26ft)

Applications

The Series 40 Ball Bearing Block is versatile and ideal for various marine rigging systems, including:

• Mainsheet: Ensures smooth control of the mainsail sail handling.
• Halyard: Provides reliable support for lifting sails.
• Vang: Maintains sail tension and shape.
• Spinnaker Control Lines: Facilitates easy deployment and retrieval of spinnakers.

Why Choose Series 40 Ball Bearing Block?

Choosing the Series 40 Ball Bearing Block means opting for high-performance marine hardware that delivers low friction and exceptional durability. Whether you're racing or cruising, this block enhances your boat's efficiency and handling, ensuring a smoother and more enjoyable sailing experience.

Installation & Maintenance

Installing the Series 40 Ball Bearing Block is straightforward, and the design allows for easy maintenance. Regular checks and cleaning of the bearing system will ensure longevity and optimal performance, keeping your rigging systems operating at their best.

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.