SKU:97321
Series 40 Orbit BB Quin Block with Becket 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 Quin Block is engineered for exceptional strength, performance, and reliability in marine sailing applications. Designed with advanced materials, this block features toughened glass fiber reinforced nylon cheeks that replace traditional stainless steel straps, offering a lightweight yet durable solution that maintains high load capacity. Its class-leading dynamic and static load ratings make it ideal for a wide range of sailing systems, from mainsheets and spinnaker sheets on dinghies and off-the-beach catamarans to halyards, vangs, and backstays on boats up to 30 feet. The versatile design includes options for single and double sheave configurations, soft attachments, lashing options, and traditional swivel shackles, providing flexibility for complex rigging setups.
Equipped with a carbon-reinforced C-Cleat for secure rope holding, the block allows for low effort in entry and exit, with stainless steel cleat arms that are adjustable to set your preferred cleating angle. Its low-profile and compact form factor make it suitable for tight spaces while maintaining high performance. The ball-bearing system employs a two-stage design with ball bearings to significantly reduce friction and a secondary full-contact bearing to sustain low friction across the full working load range, ensuring effortless trimming and control. For applications involving high dynamic or static loads, the high load version features a robust grade 2205 stainless steel sheave hub combined with a triple bearing race, delivering low friction even under extreme conditions.
Designed to enhance performance and ease of use, the Ronstan Series 40 Orbit BB Quin Block is perfect for sailboats up to 30 feet, offering reliable operation for control lines, halyards, and sheets. Its lightweight construction, combined with high load capacity and low friction bearings, makes it an essential component for serious sailors who demand durability and efficiency in their rigging systems.
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