Ronstan Sheaves



Ronstan makes a variety of sheaves than can be used in a number of custom and replacement applications. Common applications of Ronstan sheaves include halyards and other lines leaving masts and fairleads for control lines. Ronstan sheaves are also used in several industrial and commercial marine applications. Depending on the load and friction requirement, different ronstan sheaves are used. Another important factor to consider when selecting a sheave is the diameter. The correct sheave needs to fit into the masthead or box that it is going into. Larger sheaves can help distribute the load of the line and reduce resistance. The dimension of each sheave can be found on the individual product pages.

About Ronstan Acetal Ball Bearing Sheaves
Ronstan Acetal ball bearing sheaves are precision moulded and run on Acetal or Torlon ball bearings to provide high performance & low friction. Ronstn U.V. resistant acetal sheaves operate with very little friction when placed under moderate loads.Ronstan Acetal oilite bearing sheaves feature self lubricating Oilite Bronze bearings for greater load capacity and long life. Oilite bearings are produced from oil-impregnated high strength Bronze, which ensures that the surface is always lubricated. Ronstan's range of Acetal sheaves is moulded from a specially modified ultra-violet resistant grade of material to provide a long service life in the tough marine environment. Acetal is well suited to the application, with characteristics of high strength and resistance to impact and wear. Ronstan Acetal sheaves also exhibits excellent low friction properties for bearing applications.

About Ronstan Nylatron Sheaves
Ronstan Nylatron sheaves are made from a unique plastic material which is suitable for use with wire. Nylatron is a cast, partially cross-linked polyamide compound which has been modified with a MoS2 filler. It has excellent wear resistance, self lubrication and low friction properties. If you need a new wire sheave for a halyard, Ronstan Nylatron sheaves are a good option.

About Nylon Ronstan Sheaves
Ronstan Nylon sheaves are made with glass reinforcement for greater strength and abrasion resistance. Ronstan Nylon sheaves are used for high load applications and are available in a 100mm and 75mm version.

About Ronstan Sheave Boxes
Ronstan manufactures an extensive range of sheave boxes for use with both rope and wire. Plain bearing sheaves are ideal for halyards and other applications where high static loads are likely to be encountered. This is because they have no ball bearing that could get deformed as time goes on. In some applications, especially with older boats, replacing the entire sheave box is easier than trying to replace just the sheave itself. The Ronstan Sheave Boxes use Nylatron Sheave within a grade 316 stainless steel cheeks.

We at  Mauri Pro Sailing  are fully committed to be your  Ronstan Sheave  specialist not only providing the sailing community with a comprehensive and easy to use web site but with all the appropriate technical information that you might need to select your sailboat hardware and equipment. If you need any assistance selecting the appropriate  Ronstan sheaves for your marine application please  contact us . Our crew is ready to help!