SKU:97310
Series 40 Orbit Single BB Single Stand-Up Block
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 Single BB Stand-Up Block offers exceptional performance and reliability for demanding sailing applications. Designed with a lightweight yet durable construction, this block features toughened glass fiber reinforced nylon cheeks that replace traditional stainless steel straps, providing a superior balance of strength and weight savings. Its class-leading dynamic and static load ratings make it suitable for a wide range of marine systems, from small dinghies to larger sportboats and catamarans.
Equipped with a low-friction, two-stage ball bearing system, the Series 40 Orbit Block ensures smooth operation and effortless trimming under various loads. The secondary full-contact bearing further minimizes friction across the full working load range, enabling precise control with minimal effort. The high load version employs a robust 2205 stainless steel sheave hub and triple bearing race, making it ideal for applications where exceptionally high static or dynamic loads are expected, such as main sheets, spinnakers, halyards, and control lines.
The block features a carbon-reinforced C-Cleat for secure rope holding with low entry and exit efforts, along with fairleads designed for rapid action from any angle. Cleat arms are made from stainless steel and are adjustable, allowing users to set their preferred cleating angle. This versatility extends to options including soft attachment, lashing, and traditional swivel shackles, accommodating a broad spectrum of rigging configurations.
Compact and low profile, the Series 40 Orbit Block is suitable for various marine applications on boats up to 30 feet. It is particularly effective in mainsheet systems, spinnaker sheets, halyard, vang, and backstay applications. Thanks to its high-performance features and durable construction, this block enhances sail control and ease of handling, making it an essential component for serious sailors seeking reliable, high-load hardware with effortless operation.
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