The Ronstan double block is a versatile sailing component designed to handle various rigging tasks on yachts and boats. It features two sheaves mounted on a single frame, allowing for increased line control and efficiency. With its durable construction and smooth bearings, it ensures reliable performance in different sailing conditions. The double block is commonly used for applications such as halyards, sheets, and control lines, providing sailors with enhanced maneuverability and sail control.
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1-2 weeks delivery time Price incl. 19% VAT The Ronstan RF20202 Series 20 Ball Bearing Double Block with Shackle is a revolutionary component designed to elevate your sailing rigging setup. Featuring a Dual Axis Shackle Head for unparalleled flexibility, this block ensures smooth, low-friction movement even under heavy loads. With a breaking load (B.L.) of 700 kilograms and a maximum working load (M.W.L.) of 350 kilograms, it offers the perfect balance of strength and lightweight agility. Ideal for both seasoned sailors and beginners, the RF20202 provides top-tier performance and reliability for every sailing scenario.
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€ 34
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1-2 weeks delivery time Price incl. 19% VAT The Ronstan RF20212 Series 20 Ball Bearing Double Block with Becket and Shackle is a precision-engineered sailing accessory designed for enhanced rigging efficiency. Featuring a dual-axis head for flexible positioning, it integrates seamlessly into diverse setups. The low-friction operation ensures smooth maneuvering, while its robust design withstands high loads. Despite its strength, the block remains lightweight and versatile, with a breaking load of 700 kg and a maximum working load of 350 kg. Ideal for both competitive sailing and casual cruising, this block promises reliability and exceptional performance on the water.
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€ 37,70
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1-2 weeks delivery time Price incl. 19% VAT The Ronstan RF20281 Series 20 Ball Bearing In-Line Double Block is a versatile sailing companion designed for smooth, low-friction performance and impressive load capacity. Lightweight yet robust, it accommodates various rope diameters and handles dynamic and static loads with ease. Precision-engineered for sailing excellence, this block ensures reliable and efficient rigging, making it the perfect choice for both recreational and competitive sailors.
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€ 33,60
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1-2 weeks delivery time Price incl. 19% VAT The Ronstan RF30721 Series 30 Ball Bearing Block, Double Exit is engineered for optimal performance in demanding marine environments. With a robust Breaking Load of 750 kilograms and a Maximum Working Load of 300 kilograms, this lightweight block ensures smooth operation for various sailing tasks. Weighing just 60 grams, it offers easy installation with only two 5mm fasteners. The included cover plate adds extra durability, protecting internal components from the elements. Whether for hoisting sails or managing rigging, the RF30721 delivers exceptional efficiency and reliability.
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€ 36,71
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1-2 weeks delivery time Price incl. 19% VAT The Ronstan RF41202 Series 40 AP Double Block With Swivel embodies precision engineering and expert craftsmanship, offering superior durability and functionality for professional yacht rigging. With a robust construction, swivel mechanism, and impressive load capacities, it ensures smooth and efficient operation. Designed for ropes up to 10mm in diameter, this block delivers exceptional performance in various rigging configurations, making it a reliable choice for sailors worldwide.
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€ 48,29
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1-2 weeks delivery time Price incl. 19% VAT The Ronstan RF41212 AP Block Double Becket is engineered for peak performance in demanding maritime conditions. Featuring a Ø 40 mm sheave for ropes up to 10 mm in diameter, it offers smooth operation, exceptional strength, and durability. With a Safe Working Load (SWL) of 600 daN and a Breaking Load (BL) of 1200 daN, this block is a reliable choice for sailors seeking high-performance rigging solutions, ensuring a smooth and efficient sailing experience.
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€ 61,28
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1-2 weeks delivery time Price incl. 19% VAT The Ronstan RF51200 Series 50 All Purpose Block Double delivers exceptional strength and efficiency, designed for sailors who demand performance and durability. Featuring a self-lubricating Acetal polymer sheave, slotted pin shackle, and compatibility with Series 125 roller ball bearings, this block ensures smooth, low-maintenance operation. With a Breaking Load (B.L.) of 2000 kilograms and a Maximum Working Load (M.W.L.) of 1000 kilograms, it is ideal for handling demanding conditions. Lightweight at 255 grams, it’s perfect for various rigging setups, making it a versatile addition to any sailing system.
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€ 80,17
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1-2 weeks delivery time Price incl. 19% VAT The Ronstan RF51210 Series 50 All Purpose Block Double with Becket delivers exceptional performance and durability for sailors seeking reliability in challenging conditions. Featuring a self-lubricating Acetal polymer sheave and low-maintenance design, this block reduces friction and ensures smooth operation. With high working loads, a snap-fit removable becket pin, and compatibility with spare parts like the RF51010 Replacement Becket Pin, the RF51210 is ideal for a variety of sailing applications. Its impressive breaking load of 2000 kg and maximum working load of 1000 kg make it a robust yet lightweight addition to your rigging setup.
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€ 100,95
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1-2 weeks delivery time Price incl. 19% VAT The Ronstan RF35202 Series 30 Ball Bearing Orbit Block Double offers the highest working load in its class, combining lightweight construction, reliable performance, and versatility. Designed for high-performance sailing, this block is equipped with a low-friction ball bearing system and is compatible with ropes up to 8mm in diameter, ensuring smooth operation under various conditions. The specialized SP versions with Nylatron sheaves provide additional adaptability for different rigging needs.
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€ 45,23
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1-2 weeks delivery time Price incl. 19% VAT The Ronstan RF35212 Series 30 Ball Bearing Orbit Block Double with Becket offers the highest working load in its class while maintaining a lightweight design. Equipped with a low-friction 2-stage ball bearing system and a Nylatron sheave for both rope and wire, this block ensures smooth and efficient operation. With its secure attachment, ultra-low profile thru-sheave becket, and the ability to handle a 4:1 system, it's perfect for sailors who need reliable performance and versatility in demanding conditions.
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€ 49,23
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1-2 weeks delivery time Price incl. 19% VAT The Ronstan RF45201 and RF55201 Series 40 & 55 Ball Bearing Orbit Blocks offer high performance and reliability. Featuring a low friction 2-stage ball bearing system and Dyneema Link heads, these blocks are ideal for demanding sailing applications. With a compact build, high working load, and easy installation, they provide superior rope management and durability.
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€ 71,51
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1-2 weeks delivery time Price incl. 19% VAT The Ronstan RF45211 and RF75211 Series 70 Ball Bearing Orbit Blocks provide superior performance with low-friction 2-stage ball bearings, ultra-lightweight construction, and high-performance cleating. Available in 40mm and 70mm diameters, these blocks are designed to handle high loads with ease, featuring low-profile designs and ultra-low-profile beckets, making them perfect for diverse sailing conditions and rigging setups.
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1-2 weeks delivery time Price incl. 19% VAT The Ronstan RF64202 Series 60 Core Block Double features a revolutionary non-swivel head design, offering outstanding load performance and reduced friction for optimal efficiency. With a removable threaded pin, multifunctional central hub, and compatibility with ropes up to 12mm, this block is perfect for a variety of rigging setups. Weighing just 390g, it provides robust performance while maintaining lightweight maneuverability, making it a top choice for maritime applications.
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€ 237,72
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1-2 weeks delivery time Price incl. 19% VAT The Ronstan RF64251 Series 60 Core Block Double Foot sets a new standard in foot block performance, combining exceptional load capacity with modern design. Offering reduced friction and smooth operation, it excels in dynamic and static load performance. With a breaking load of 2000kg and a maximum working load of 1000kg, this block ensures reliability and durability for various applications, making it an ideal choice for professionals and enthusiasts alike.
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€ 214,09
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1-2 weeks delivery time Price incl. 19% VAT The Ronstan RF74202 Series 75 Core Block Double is designed for sailors who demand both innovation and performance. Featuring a non-swivel shackle head design, this block delivers class-leading performance in dynamic and high static load scenarios, with less than half the friction compared to its competitors. It includes a removable threaded pin at the shackle head, a central hub for becket take-off, and accommodates lines up to 13.5mm thick. With a Breaking Load of 3000kg and a Maximum Working Load of 1500kg, it provides reliable and efficient operation while weighing just 506g.
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€ 254,67
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1-2 weeks delivery time Price incl. 19% VAT The Ronstan RF662 Series 20 Utility Block Double is a versatile utility block designed for reliable performance across a range of applications. Featuring a double, tube rivet construction, it ensures robust operation with a lightweight, durable design. Weighing just 20g, this block accommodates ropes up to 5mm in diameter and offers hassle-free, maintenance-free performance. Its Acetal sheave material ensures smooth operation, while its compact size (297mm height, 210mm width) provides efficient handling and installation.
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€ 25,12
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1-2 weeks delivery time Price incl. 19% VAT The Ronstan RF417 Series 30 Utility Double Block Tube Rivet is a versatile and durable double block designed for optimal performance in various rigging setups. Weighing just 40 grams, this maintenance-free block offers a robust breaking load of 1300 kg and a maximum working load of 450 kg, making it perfect for a wide range of tasks. It accommodates ropes up to 8mm in diameter, providing exceptional value and reliability for sailing and rigging needs.
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€ 24,53
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1-2 weeks delivery time Price incl. 19% VAT The Ronstan RF81 Series 29 Utility Block with a Double Loop Top is designed to streamline your rigging experience. Crafted with a lightweight yet durable construction, this block ensures secure attachment and ease of use in various applications. Featuring a breaking load of 600 kg and a maximum working load of 300 kg, it accommodates ropes up to 8 mm in diameter. At just 40 grams, it provides optimal performance and maneuverability, making it an ideal choice for sailing enthusiasts who value both quality and reliability.
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€ 29,53
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1-2 weeks delivery time Price incl. 19% VAT The Ronstan RF15202 Series 15 Ball Bearing Double Block with Loop Top is a compact, lightweight, and versatile sailing accessory. Featuring a loop head for splicing or lashing, or for easy shackling using the RF633S, this block ensures high performance, minimal friction, and durability with a breaking load of 700 kg and a maximum working load of 240 kg.
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€ 25,80
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1-2 weeks delivery time Price incl. 19% VAT The Ronstan RF15212 Series 15 Ball Bearing Double Block with Becket and Loop Top is designed for versatility and enhanced performance. Featuring a becket and loop head for flexible attachment options, this compact and lightweight block ensures smooth operation, minimal friction, and superior durability, with a Breaking Load of 700 kg and a maximum Working Load of 240 kg.
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€ 29,36
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In what ways do Ronstan Double Blocks integrate with other sailing hardware systems?
Ronstan Double Blocks are engineered to seamlessly integrate with various sailing hardware systems, enhancing overall vessel performance. Their design accommodates both splicing and lashing attachments, allowing for versatile connections with existing rigging setups. The incorporation of precision-moulded acetal sheaves running on stainless steel ball bearings ensures high performance and low friction, facilitating smooth operation within complex sail control systems.
How do Ronstan Double Blocks utilize orbit block™ technology to improve performance?
Ronstan Double Blocks equipped with Orbit Block™ technology enhance performance by utilizing a low-friction 2-stage ball bearing system, which ensures consistent efficiency across the full working load range. The incorporation of fibre-reinforced composites in the block head and cheeks reduces weight while maintaining strength, contributing to a superior strength-to-weight ratio. Additionally, the use of 316 stainless steel in critical components provides enhanced durability and corrosion resistance in marine environments.
What maintenance tips can help ensure the long-term performance and durability of Ronstan Double Blocks?
To maintain the performance and longevity of Ronstan Double Blocks, it's essential to regularly flush them with fresh water to remove salt and debris, which can affect the efficiency of the ball bearings. Inspect the straps and other components for signs of wear or corrosion, especially if the blocks are used in harsh marine environments. Lubricating moving parts with appropriate marine-grade lubricants can also help ensure smooth operation and extend the lifespan of the blocks.
What types of Ronstan Sailboat Hardware items do you have in your catalog?
Ronstan Pulley Blocks, Ronstan Blocks, Ronstan Cheek Blocks, Ronstan 20mm Blocks, Ronstan 30mm Blocks, Ronstan 40mm Blocks, Ronstan Double Blocks, Ronstan Exit Blocks, Ronstan Fiddle Blocks, Ronstan Orbit Blocks, Ronstan Ratchet Blocks, Ronstan Triple Blocks, Ronstan Cleats, Ronstan Cam C-Cleats, Ronstan Swivel Cleats, Ronstan V-Cleats, Ronstan Sail Tracks, Ronstan Cars, Ronstan Clear Start Sailing Watches