SKU:70624
Series 40 Ball Bearing Orbit Block - Single - Becket - Cleat - Swivel Head
Features:
Lightweight
Kilogram for kilogram of working load, BB and RT Orbit Blocks are the worlds lightest. The unique orbital design allows the bearing to only be in the active areas of the floating sheave. This minimizes the mass of the inactive return race and hub.
Weight and bulk are further reduced in the different block configurations. The ball bearing single and becket block has a through-sheave becket arrangement. The result The lowest weight possible.
Multi-sheave blocks have only single intermediate cheeks and an ultra-light and efficient head arrangement. This gives a 30% weight saving advantage over the nearest competitor. Other brands just link together their single blocks. This results in unnecessary double cheeks between each sheave, held together by a heavy steel channel across the top of the block.
Highest Working Load In It's Class
The orbital ball-bearing arrangement gives the largest possible bearing race diameter. This maximizes load performance. The proven Ronstan 2-stage bearing system features high compression grade acetal ball bearings and a secondary full-contact bearing. This gives minimum friction across the full working load range.
The floating sheave and bearing system is supported by a fiber-reinforced load frame. The design was computer modeled to be stress optimized.
Applications:
Materials:
The Ronstan Series 40 Ball Bearing Orbit Block, part number RF45130, offers exceptional performance for sailing applications requiring lightweight and high load capacity. Constructed from durable materials, this single becket block features a swivel head and cleat, making it suitable for a variety of control line setups. Its innovative orbital ball bearing system reduces friction significantly, ensuring smooth operation even under heavy loads. Designed for applications such as mainsheet systems on small dinghies up to 16 feet, spinnaker sheets on similar-sized vessels, and halyard, vang, and backstay lines on boats up to 26 feet, this block provides reliable performance across a range of marine tasks.Featuring a low-profile and compact design, the Ronstan Series 40 Orbit Block minimizes weight without sacrificing strength. Its ultra-light construction is achieved through a unique orbital bearing design that places load-bearing components only in active zones, reducing unnecessary mass. The high-performance cleating mechanism allows for secure line holding, while the ball bearing arrangement maximizes load distribution and minimizes friction. The block's materials include high-strength carbon black acetal for the bearings, glass fiber reinforced nylon for the frame, and carbon fiber reinforced, PTFE impregnated nylon for the sheave, ensuring durability and resistance to harsh marine environments.With a maximum working load that exceeds other products in its class, this Orbit Block ensures safety and longevity during demanding sailing conditions. The computer-optimized load frame supports the floating sheave and bearings, providing enhanced stress distribution and structural integrity. Its lightweight design results in approximately 30% weight savings compared to similar products, making it ideal for performance-oriented sailors seeking to reduce overall vessel weight. Whether used for control lines on larger yachts or for halyards on smaller boats, the Ronstan Series 40 Orbit Block delivers consistent, high-performance operation wrapped in a compact, lightweight package.Note that this product is not classified as oversized or truck freight, simplifying shipping and handling. Trust Ronstan's innovative engineering to enhance your sailing experience with reliable, high-quality hardware designed for durability and ease of use.
Features:
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