SKU:97318
Series 40 Orbit BB Quad Block with Swivel Shackle
The Series 40 ball-bearing Orbit Blocks provides the perfect balance of strength, performance, and reliability. They offer class-leading dynamic and static load ratings, the highest available in this size of performance blocks. Lightweight and strong toughened glass fiber reinforced nylon cheeks replace stainless steel straps used in traditional utility blocks - the perfect balance of performance and reliability.
As well as traditional single swivel blocks, the range includes single and double sheave lashing or soft attachment options through to multiple sheave blocks including those with quad and quin sheaves. The range is highly versatile allowing a multitude of possible systems right up to a 12:1 purchase mainsheet system for off-the-beach performance catamarans.
Series 40 Orbit Blocks are fitted with our carbon-reinforced C-Cleat for secure rope holding with low entry and exit efforts, and fairleads for fast action from any angle. Cleat arms are made from stainless steel and adjustable for setting your preferred cleating angle.
Ball Bearing versions incorporate our 2-stage bearing system using ball bearings to minimize friction and a secondary full-contact bearing to maintain low friction across the full working load range.
High Load versions are designed specifically for any application where high dynamic or static loads are expected. They feature a high-strength grade 2205 stainless steel sheave hub together with a triple bearing race to maintain low friction at very high loads.
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The Ronstan Series 40 Orbit BB Quad Block with Swivel Shackle delivers a superior combination of strength, performance, and reliability for demanding sailing applications. Designed with lightweight toughened glass fiber reinforced nylon cheeks, this performance block replaces traditional stainless steel straps, providing an optimal balance between durability and weight. Its class-leading dynamic and static load ratings make it suitable for a wide range of sailing systems, from dinghies to larger yachts. The quad sheave configuration, coupled with a versatile swivel shackle, allows for complex control line arrangements and high-performance mainsheet systems, including off-the-beach catamarans with purchase ratios up to 12:1. The inclusion of our carbon-reinforced C-Cleat ensures secure rope holding with minimal effort, while the fairleads facilitate quick action from any angle. The cleat arms are made from stainless steel and are adjustable, allowing sailors to customize the cleating angle for optimal control. The ball-bearing version features a sophisticated 2-stage bearing system designed to minimize friction during trimming, ensuring smooth operation under load. Additionally, the high load version incorporates a triple bearing race and a high-strength stainless steel sheave hub to handle significant static and dynamic loads without compromising performance. This versatile block is well-suited for mainsheets, spinnaker sheets, halyards, vangs, backstays, and control lines on boats up to approximately 30 feet. Its compact, low-profile design makes it easy to incorporate into various rigging configurations, providing reliable service across a broad spectrum of sailing vessels. Whether you need a high-performance component for competitive racing or durable hardware for cruising, the Ronstan Series 40 Orbit BB Quad Block with Swivel Shackle offers the durability, efficiency, and versatility required for modern sailing systems.
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