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Definitions and Customer Considerations

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Definitions MAXIMUM WORKING LOAD (M.W.L.) Maximum Working Load (M.W.L.) is the maximum static and/or dynamic load at which the product will still function without excessive friction, distortion, wear or permanent deformation of components. Above this load, bearing systems may fail, moving parts may seize and stainless steel or plastic components may begin to bend, stretch or otherwise deform. Maximum working loads should never ...

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Cleats – Selection Advice

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V-Cleats Ronstan V-Cleats™ are simple yet effective rope cleating devices. Manufactured from PTFE impregnated, glass and carbon fibre reinforced composite material they are lightweight. Computer generated tooth geometry provides a positive, self-cleating action on the line. For applications where constant line draw-through is required, the opening action of Ronstan cam cleats are recommended. Sizes: Small, Medium, and Large Rope Capacity: 3-6mm (1/8″ – ...

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Sheaves – Selection Advice

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Ratchet Sheaves Ratchet sheaves have a rope groove design which grips the line, and an internal mechanism that allows the sheave to rotate in one direction. An operator can raise an object by pulling a rope in the direction of rotation and the sheave grip and mechanism preventing it from rotating back provide “holding power” which relieves the load required to hold the ...

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Shackles – Selection Advice

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Standard Dee Shackles The standard dimensional format shackle providing high load capacity and compact size. Smaller size bodies are produced from formed stainless steel sheet, whilst larger size bodies are from turned bar and flattened at the ends. Pin heads are available in compact ‘slotted’ or ‘coined’ for finger or tool adjustment. Some pin heads are drilled for the fitting of a securing ...

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Track and Car Systems Selection Advice

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C-Track and Slide Systems Compact and Lightweight   C-track and slides are the smallest and lightest of Ronstan’s track and car systems. The lightweight aluminium track is only 19mm (3/4”) wide and the “C” profile encapsulates the slide cars for the lowest possible profile. Slide cars are made of lightweight, but strong glass fibre-reinforced nylon and are available in various configurations with attachment ...

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Block and Pulley Selection Advice

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Utility Blocks – All Purpose Use them Anywhere All Purpose utility blocks are a great choice for durability and a long service life. They feature self-lubricating acetal polymer sheaves running on polished stainless steel races and perform equally well with dynamic loads and static loads. Available in 40 and 50mm (1 9/16″ and 2″) sheave diameters to suit a range of rope diameters and ...

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About Us

Ronstan’s end-to-end design, manufacture and distribution operation delivers high specification products for all serious hardware applications.

Our state-of-the-art design facilities and manufacturing plant handles more than 4.9 million units each year.

As one of the top three sailboat hardware brands globally we know what it is like to deliver great equipment that can handle challenging conditions.
Ronstan International Inc
45 High Point Avenue, #2 Portsmouth
Portsmouth Rhode Island 02871
+1 (401) 293 0539 $$$
Ronstan International Inc
45 High Point Avenue, #2 Portsmouth
Portsmouth Rhode Island 02871
+1 (401) 293 0539 office@ronstan.us