{"product_id":"ronstan-series-40-ball-bearing-block-triple-swivel-head","title":"Ronstan Series 40 Triple Ball Bearing Block, Swivel Head, 40mm Sheave","description":"\u003cp\u003e\u003cstrong\u003eMaster your sail control with the Ronstan Series 40 Triple Ball Bearing Block.\u003c\/strong\u003e Engineered for demanding marine applications, this block ensures exceptionally smooth and efficient operation for critical sailing lines. Featuring a high-performance 2-stage ball bearing system, it delivers consistent, low-friction functionality across the full load range. Crafted with robust, corrosion-resistant materials, it's the professional's choice for reliability and precision on the water. Upgrade your rigging for unparalleled control and performance.\u003c\/p\u003e\nKey Features:\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Performance Bearing System:\u003c\/strong\u003e Features low-friction Acetal or Torlon® ball bearings and a 2-stage system, ensuring consistent performance across the full load range for optimal efficiency.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e360° Swivel Head:\u003c\/strong\u003e The swivel shackle head allows for full 360° rotation, providing maximum flexibility and optimal line alignment while preventing twists and tangles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRobust \u0026amp; Lightweight Construction:\u003c\/strong\u003e Built with impact-resistant, fiber-reinforced Nylon cheeks and Grade 316 stainless steel load strap and head fitting for exceptional durability and corrosion resistance in harsh marine environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimal Sheave Diameter:\u003c\/strong\u003e A 40mm sheave diameter ensures efficient line management and optimal power transfer, enhancing overall rigging performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Rope Capacity:\u003c\/strong\u003e Accommodates lines up to 10mm (2\/5 inch) in diameter, offering versatility for various rigging setups and applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImpressive Strength:\u003c\/strong\u003e Rated for a Maximum Working Load (MWL) of 600 kg (1323 lbs) and a Breaking Load (BL) of 1400 kg (3087 lbs), guaranteeing reliability under extreme sailing conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy Maintenance:\u003c\/strong\u003e Integrated cheek cut-outs provide convenient access to the bearing system, simplifying upkeep and prolonging the block's lifespan.\u003c\/li\u003e\n\u003c\/ul\u003e\nApplications:\u003cul\u003e\n\u003cli\u003eSuitable for mainsail, halyard, vang, and spinnaker control lines.\u003c\/li\u003e\n\u003cli\u003eIdeal for off-the-beach catamarans, one-design classes, and sportsboats up to 8m (26ft).\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":53275121844542,"sku":"CT-117304","price":91.54,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0287\/3235\/8731\/files\/70618XL.jpg?v=1775339213","url":"https:\/\/www.tugandtow.com\/products\/ronstan-series-40-ball-bearing-block-triple-swivel-head","provider":"Tug and Tow","version":"1.0","type":"link"}