Ronstan Series 40 BB Double Block with Swivel and Shackle
The Series 40 ball-bearing Orbit Blocks™ combine strength, performance, and reliability into one highly efficient system. Featuring class-leading dynamic and static load ratings, they stand out in their category. The blocks are designed with lightweight yet durable glass fiber reinforced nylon cheeks, replacing traditional stainless steel straps and emphasizing performance.
This versatile range includes both single and double sheave options and accommodates different attachment methods including soft attachment options and traditional swivel blocks. Tackle systems can be customized to suit a variety of needs, enabling setups such as a 12:1 purchase mainsheet system ideal for off-the-beach performance catamarans.
Equipped with the advanced carbon-reinforced C-Cleat™, these blocks ensure secure rope holding while offering low entry and exit efforts. The stainless steel cleat arms are easily adjustable, allowing users to set their preferred cleating angle.
The ball bearing models utilize a two-stage bearing system to minimize friction, combined with a secondary full-contact bearing, ensuring low friction across the full working load range. For high load applications, the designated high load versions include robust 2205 stainless steel sheave and hub with a triple bearing race, providing reliability at elevated loads.
Key Features:
Ronstan RF48200 Series 40 BB Double Block with Swivel and Shackle