SKU:97303
Series 40 Orbit RT Block with Quin, Becket, Cleat Swivel
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 also 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 extremely 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 RT Block offers a perfect blend of strength, performance, and reliability for a variety of sailing applications. Designed with class-leading dynamic and static load ratings, these blocks are built to handle demanding loads while maintaining smooth operation. The lightweight construction features toughened glass fiber reinforced nylon cheeks that replace traditional stainless steel straps, providing both durability and reduced weight for optimized performance in competitive and recreational sailing. Whether used for mainsheets, spinnakers, or control lines, these versatile blocks accommodate single and double sheave configurations as well as multiple sheave systems, including quad and quin sheaves. This flexibility allows sailors to tailor their rigging setups up to a 12:1 purchase system, ideal for off-the-beach catamarans and high-performance vessels.
Equipped with Ronstan's carbon-reinforced C-Cleat, these blocks ensure secure rope holding with minimal effort for cleating and release. The cleat arms are crafted from stainless steel and are adjustable, enabling sailors to set their preferred cleating angle for optimal control. The ball bearing versions incorporate a two-stage bearing system, featuring ball bearings that reduce friction during trimming and a secondary full-contact bearing to maintain low friction across the full working load range. For applications requiring high static or dynamic loads, the high load versions utilize a high-strength grade 2205 stainless steel sheave hub and a triple bearing race to keep friction low even under extreme conditions, making them suitable for halyards, vang, and backstay control on larger boats.
Designed with a compact profile, the Series 40 Orbit RT Blocks are easy to install and operate, with features that enhance performance and ease of use. They are suitable for boats up to 30 feet, including dinghies, off-the-beach catamarans, and sportsboats. Whether used for control lines or high-load tasks, these blocks deliver consistent, reliable performance in a lightweight package, making them a preferred choice for competitive sailors and serious cruisers alike.
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