SKU:97311
Series 40 Orbit BB Cheek 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.
Features:
Applications
Specifications:
The Ronstan Series 40 Orbit BB Cheek Block RF48151 offers a high-performance solution for sailboats requiring durable and efficient hardware. Designed with class-leading dynamic and static load ratings, this block ensures reliable operation under demanding conditions. Its lightweight construction features toughened glass fiber reinforced nylon cheeks that replace traditional stainless steel straps, providing a perfect balance of strength and weight savings for competitive and recreational sailing.
Equipped with a low-friction 2-stage ball bearing system, the RF48151 reduces effort during trimming and control line adjustments. The ball bearings are complemented by a secondary full-contact bearing, maintaining low friction across the full working load range. This design minimizes wear and ensures smooth, effortless operation. The inclusion of a carbon-reinforced C-cleat enables secure rope holding with minimal effort, while adjustable stainless steel cleat arms allow customization of cleating angles for optimal control.
The versatile range includes options for single and double sheave configurations, soft attachments, lashing, and traditional swivel shackle heads. Multiple sheave options, including quad and quin sheaves, support complex systems such as 12:1 mainsheet setups commonly used on off-the-beach catamarans. These features make the Series 40 Orbit Blocks suitable for various applications including mainsheets, spinnaker sheets, halyards, vangs, backstays, and control lines on boats up to approximately 30 feet.
Constructed with high-strength grade 2205 stainless steel sheaves and triple bearing races, the RF48151 is engineered to withstand high dynamic and static loads. Its compact and low profile design makes it ideal for applications where space and weight are critical. Whether used on dinghies, sportsboats, or larger yachts, this cheek block provides reliable performance and ease of use in a wide range of sailing environments.
Features:
Couldn't load pickup availability
