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Viadana Ball Bearing Blocks - Various Sizes & Styles (57mm, Single)
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About Viadana Ball Bearing Blocks - Various Sizes
Viadana's 57mm blocks run on twin races of precision molded Delrin ball bearings for minimum friction. All Viadana products are backed by a 2-year manufacturer warranty against factory defects. Sheave size - 57mm / 2 1/4" Max line size - 12mm / 7/16" Overall Height -109mm / 4 1/4" Weight - 122 grams / 4.3 ounces Breaking Load - 1,000 kg / 2,204 lbs Max. Working Load - 280 kg / 617 lbs *Head is adjustable and can be either stationary or swivel Viadana has been in business in Italy since 1961 researching, designing, manufacturing, and marketing nautical products for windsurfs, sailboats, keelboats, and cabin cruisers. Above all, Viadana takes care in using only the best available materials for nautical application, such as stainless steel AISI 316 and AISI 304, aluminum alloys 6063, 6005, 5154, composite fibre, and polymers such as carbon fibre and Delrin. All Viadana products are rigorously tested with laboratory procedures including mechanical tests of tensile strength and chemical salt-proof valuations.
