{"title":"Ronstan 75mm - 100mm Ball Bearing Pulleys NZ – Heavy-Duty Sailing Blocks","description":"\u003cp data-start=\"95\" data-end=\"641\"\u003eTake your sail handling to the next level with \u003cstrong data-start=\"142\" data-end=\"179\"\u003eRonstan 75mm - 100mm Ball Bearing Pulleys\u003c\/strong\u003e from Barton Marine NZ. Engineered for \u003cstrong data-start=\"218\" data-end=\"295\"\u003ehigh-load performance, low-friction operation, and exceptional durability\u003c\/strong\u003e, these premium sailing blocks are ideal for cruising yachts, racing yachts, keelboats, and offshore sailing applications. Ronstan's \u003cstrong data-start=\"428\" data-end=\"458\"\u003eSeries 75 and 100 Core™ and Orbit™\u003c\/strong\u003e blocks are designed to deliver smooth operation under both \u003cstrong data-start=\"518\" data-end=\"546\"\u003edynamic and static loads\u003c\/strong\u003e, making them suitable for demanding marine environments. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"643\" data-end=\"893\"\u003eAt Barton Marine NZ, we stock a comprehensive range of genuine \u003cstrong data-start=\"706\" data-end=\"743\"\u003eRonstan 75mm - 100mm Ball Bearing Pulleys\u003c\/strong\u003e, including single, double, stand-up, and becket blocks designed to maximise sailing efficiency and reliability. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"895\" data-end=\"898\"\u003e\n\u003ch2 data-section-id=\"1j3tb3i\" data-start=\"900\" data-end=\"953\"\u003eComplete Range of Ronstan 75mm - 100mm Ball Bearing Blocks\u003c\/h2\u003e\n\u003cp data-start=\"955\" data-end=\"988\"\u003eBrowse our collection, including:\u003c\/p\u003e\n\u003cul data-start=\"990\" data-end=\"1231\"\u003e\n\u003cli data-section-id=\"rjyd31\" data-start=\"990\" data-end=\"1023\"\u003e75mm - 100mm single ball bearing blocks\u003c\/li\u003e\n\u003cli data-section-id=\"1kjcpps\" data-start=\"1024\" data-end=\"1052\"\u003eDouble ball bearing blocks\u003c\/li\u003e\n\u003cli data-section-id=\"cq189i\" data-start=\"1053\" data-end=\"1070\"\u003eStand-up blocks\u003c\/li\u003e\n\u003cli data-section-id=\"fwd3e6\" data-start=\"1071\" data-end=\"1091\"\u003eBlocks with becket\u003c\/li\u003e\n\u003cli data-section-id=\"1avrnla\" data-start=\"1092\" data-end=\"1116\"\u003eHigh-load Core™ blocks\u003c\/li\u003e\n\u003cli data-section-id=\"1bdbvoq\" data-start=\"1117\" data-end=\"1144\"\u003eOrbit™ performance blocks\u003c\/li\u003e\n\u003cli data-section-id=\"m5kjtz\" data-start=\"1145\" data-end=\"1173\"\u003eHeavy-duty sailing pulleys\u003c\/li\u003e\n\u003cli data-section-id=\"ma8ujb\" data-start=\"1174\" data-end=\"1202\"\u003eReplacement rigging blocks\u003c\/li\u003e\n\u003cli data-section-id=\"zw79k7\" data-start=\"1203\" data-end=\"1231\"\u003eMarine control line blocks\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1233\" data-end=\"1383\"\u003eWhether you're upgrading your yacht's rigging or replacing worn hardware, Ronstan 75mm - 100mm blocks provide outstanding strength and dependable performance.\u003c\/p\u003e\n\u003chr data-start=\"1385\" data-end=\"1388\"\u003e\n\u003ch2 data-section-id=\"ee3yr0\" data-start=\"1390\" data-end=\"1437\"\u003eEngineered for High Loads \u0026amp; Smooth Operation\u003c\/h2\u003e\n\u003cp data-start=\"1439\" data-end=\"1873\"\u003eRonstan 75mm - 100mm Ball Bearing Pulleys are designed using advanced bearing technology and premium marine materials to minimise friction while maintaining exceptional load capacity. The Series 75 and 100 Core™ range features a tuned two-stage bearing system that performs well under both dynamic and static loading, making it suitable for cruising and racing yachts up to approximately \u003cstrong data-start=\"1811\" data-end=\"1834\"\u003e14 metres (46 feet)\u003c\/strong\u003e. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-section-id=\"s7l19r\" data-start=\"1875\" data-end=\"1924\"\u003eBenefits of Ronstan 75mm - 100mm Ball Bearing Pulleys\u003c\/h3\u003e\n\u003cul data-start=\"1926\" data-end=\"2223\"\u003e\n\u003cli data-section-id=\"7pbn8i\" data-start=\"1926\" data-end=\"1964\"\u003eLow-friction ball bearing technology\u003c\/li\u003e\n\u003cli data-section-id=\"1b5vnit\" data-start=\"1965\" data-end=\"1993\"\u003eHigh working load capacity\u003c\/li\u003e\n\u003cli data-section-id=\"hr4wfn\" data-start=\"1994\" data-end=\"2041\"\u003eLightweight yet extremely strong construction\u003c\/li\u003e\n\u003cli data-section-id=\"1or031s\" data-start=\"2042\" data-end=\"2086\"\u003eMarine-grade corrosion-resistant materials\u003c\/li\u003e\n\u003cli data-section-id=\"17qx1y7\" data-start=\"2087\" data-end=\"2123\"\u003eSmooth and efficient rope handling\u003c\/li\u003e\n\u003cli data-section-id=\"9xv4c0\" data-start=\"2124\" data-end=\"2175\"\u003eExcellent durability in harsh marine environments\u003c\/li\u003e\n\u003cli data-section-id=\"1pybs0o\" data-start=\"2176\" data-end=\"2223\"\u003eSuitable for cruising and performance sailing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2225\" data-end=\"2351\"\u003eThese features improve sail trimming, reduce effort on loaded control lines, and help extend the life of your running rigging.\u003c\/p\u003e\n\u003chr data-start=\"2353\" data-end=\"2356\"\u003e\n\u003ch2 data-section-id=\"1c40lpx\" data-start=\"2358\" data-end=\"2400\"\u003eIdeal for Multiple Sailing Applications\u003c\/h2\u003e\n\u003cp data-start=\"2402\" data-end=\"2458\"\u003eRonstan 75mm - 100mm Ball Bearing Pulleys are commonly used for:\u003c\/p\u003e\n\u003cul data-start=\"2460\" data-end=\"2646\"\u003e\n\u003cli data-section-id=\"122dayi\" data-start=\"2460\" data-end=\"2479\"\u003eMainsheet systems\u003c\/li\u003e\n\u003cli data-section-id=\"1299red\" data-start=\"2480\" data-end=\"2497\"\u003eHalyard systems\u003c\/li\u003e\n\u003cli data-section-id=\"1h82cfj\" data-start=\"2498\" data-end=\"2517\"\u003eBoom vang systems\u003c\/li\u003e\n\u003cli data-section-id=\"fnk5ca\" data-start=\"2518\" data-end=\"2535\"\u003eReefing systems\u003c\/li\u003e\n\u003cli data-section-id=\"bdtp2p\" data-start=\"2536\" data-end=\"2558\"\u003eGenoa sheet controls\u003c\/li\u003e\n\u003cli data-section-id=\"1inwgbh\" data-start=\"2559\" data-end=\"2578\"\u003eTraveller systems\u003c\/li\u003e\n\u003cli data-section-id=\"1iquxxc\" data-start=\"2579\" data-end=\"2605\"\u003eHeavy-duty control lines\u003c\/li\u003e\n\u003cli data-section-id=\"jxjeuj\" data-start=\"2606\" data-end=\"2646\"\u003eOffshore and performance yacht rigging\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2648\" data-end=\"2774\"\u003eTheir combination of strength and efficiency makes them an excellent choice for larger yachts and higher-load sailing systems.\u003c\/p\u003e\n\u003chr data-start=\"2776\" data-end=\"2779\"\u003e\n\u003ch2 data-section-id=\"16rhzvu\" data-start=\"2781\" data-end=\"2824\"\u003eBuilt for New Zealand Sailing Conditions\u003c\/h2\u003e\n\u003cp data-start=\"2826\" data-end=\"3160\"\u003eNew Zealand's coastal and offshore waters demand sailing hardware capable of handling saltwater, UV exposure, and continuous heavy loads. Ronstan 75mm - 100mm Ball Bearing Pulleys are engineered to deliver long-lasting reliability and smooth performance in these challenging conditions, making them a trusted choice for sailors throughout NZ.\u003c\/p\u003e\n\u003chr data-start=\"3162\" data-end=\"3165\"\u003e\n\u003ch2 data-section-id=\"100g2cs\" data-start=\"3167\" data-end=\"3234\"\u003eWhy Buy Ronstan 75mm - 100mm Ball Bearing Pulleys from Barton Marine NZ?\u003c\/h2\u003e\n\u003cul data-start=\"3236\" data-end=\"3482\"\u003e\n\u003cli data-section-id=\"lrnie9\" data-start=\"3236\" data-end=\"3270\"\u003eGenuine Ronstan sailing hardware\u003c\/li\u003e\n\u003cli data-section-id=\"fenzex\" data-start=\"3271\" data-end=\"3312\"\u003eWide range of 75mm - 100mm block configurations\u003c\/li\u003e\n\u003cli data-section-id=\"tjjbxe\" data-start=\"3313\" data-end=\"3350\"\u003eHigh-load, low-friction performance\u003c\/li\u003e\n\u003cli data-section-id=\"osr8lj\" data-start=\"3351\" data-end=\"3389\"\u003eIdeal for cruising and racing yachts\u003c\/li\u003e\n\u003cli data-section-id=\"mwbx8t\" data-start=\"3390\" data-end=\"3422\"\u003eFast New Zealand-wide shipping\u003c\/li\u003e\n\u003cli data-section-id=\"1889g19\" data-start=\"3423\" data-end=\"3482\"\u003eTrusted NZ marine and sailing supplier with expert advice\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"3484\" data-end=\"3487\"\u003e\n\u003ch2 data-section-id=\"6nsetm\" data-start=\"3489\" data-end=\"3537\"\u003eShop Ronstan 75mm - 100mm Ball Bearing Pulleys Online\u003c\/h2\u003e\n\u003cp data-start=\"3539\" data-end=\"3866\"\u003eWhether you're replacing an individual block or upgrading your entire sail control system, Barton Marine NZ offers a premium selection of \u003cstrong data-start=\"3677\" data-end=\"3714\"\u003eRonstan 75mm - 100mm Ball Bearing Pulleys\u003c\/strong\u003e designed for strength, precision, and reliability. Browse our collection today and equip your yacht with world-class sailing hardware built to perform.\u003c\/p\u003e","products":[{"product_id":"ronstan-core-rf74100-single","title":"Ronstan RF74100 – Series 75 Core Single Block (75mm)","description":"\u003cp data-start=\"576\" data-end=\"879\"\u003eThe \u003cstrong data-start=\"580\" data-end=\"620\"\u003eRonstan RF74100 Series 75 Core Block\u003c\/strong\u003e is engineered for high-load sailing applications where strength and performance are paramount. Featuring a robust 75mm sheave and a high-strength alloy cheek construction, this single block is perfect for halyards, mainsheet systems, and backstay tensioners.\u003c\/p\u003e\n\u003cp data-start=\"881\" data-end=\"1169\"\u003eOptimised for both rope and wire, it’s a versatile choice for racing yachts and performance cruisers. The precision-engineered bearing system ensures low-friction performance under extreme loads. Trusted by sailors worldwide, the RF74100 is your go-to block for uncompromised reliability.\u003c\/p\u003e\n\u003cp data-start=\"1171\" data-end=\"1232\"\u003eAvailable now from Barton Marine NZ with nationwide shipping.\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSheave Ø - 75 mm\u003c\/li\u003e\n\u003cli\u003eMax. Rope Ø - 14 mm\u003c\/li\u003e\n\u003cli\u003eMax. Cable Ø - - mm\u003c\/li\u003e\n\u003cli\u003ePin Ø - 8 mm\u003c\/li\u003e\n\u003cli\u003eM.W.L. - 1500 kg\u003c\/li\u003e\n\u003cli\u003eB. L. - 3000 kg\u003c\/li\u003e\n\u003cli\u003eWeight - 354 g\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":44585687253240,"sku":"RF74100","price":242.0,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0691\/0899\/0200\/products\/Ronstan_Core_RF74100_Single.jpg?v=1742179247"},{"product_id":"ronstan-core-rf74110-single-with-becket","title":"Ronstan RF74110 – Series 75 Core Single Block with Becket (75mm)","description":"\u003cp data-start=\"597\" data-end=\"675\"\u003e\u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eThe \u003cstrong data-start=\"4\" data-end=\"56\"\u003eRonstan RF74110 Series 75 Core Block with Becket\u003c\/strong\u003e is engineered for high-load sailing applications where strength and performance are paramount. Featuring a robust 75mm sheave and a high-strength alloy cheek construction, this single block with becket is perfect for halyards, mainsheet systems, and backstay tensioners.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"677\" data-end=\"755\"\u003e\u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eOptimised for both rope and wire, it’s a versatile choice for racing yachts and performance cruisers. The precision-engineered bearing system ensures low-friction performance under extreme loads. Trusted by sailors worldwide, the RF74110 is your go-to block for uncompromised reliability.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"757\" data-end=\"835\"\u003e\u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eAvailable now from Barton Marine NZ with nationwide shipping.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003eSheave Ø - 75 mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003eMax. Rope Ø - 14 mm\u003c\/li\u003e\n\u003cli\u003eMax. Cable Ø - - mm\u003c\/li\u003e\n\u003cli\u003ePin Ø - 8 mm\u003c\/li\u003e\n\u003cli\u003eM.W.L. - 1500 kg\u003c\/li\u003e\n\u003cli\u003eB. L. - 3000 kg\u003c\/li\u003e\n\u003cli\u003eWeight - 428 g\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":44585687417080,"sku":"RF74110","price":328.0,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0691\/0899\/0200\/products\/Ronstan_Core_RF74110_Single_with_Becket.jpg?v=1742179234"},{"product_id":"ronstan-core-rf74140-stand-up","title":"Ronstan RF74140 – Series 75 Core Stand-Up Block (75mm)","description":"\u003cp data-start=\"587\" data-end=\"665\"\u003e\u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eThe \u003cstrong data-start=\"4\" data-end=\"53\"\u003eRonstan RF74140 Series 75 Core Stand-Up Block\u003c\/strong\u003e is engineered for high-load sailing applications where strength and performance are paramount. Featuring a robust 75mm sheave and a high-strength alloy cheek construction, this stand-up block is perfect for halyards, mainsheet systems, and backstay tensioners.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"667\" data-end=\"745\"\u003e\u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eOptimised for both rope and wire, it’s a versatile choice for racing yachts and performance cruisers. The precision-engineered bearing system ensures low-friction performance under extreme loads. Trusted by sailors worldwide, the RF74140 is your go-to block for uncompromised reliability.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"747\" data-end=\"825\"\u003e\u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eAvailable now from Barton Marine NZ with nationwide shipping.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSheave Ø - 75 mm\u003c\/li\u003e\n\u003cli\u003eMax. Rope Ø - 14 mm\u003c\/li\u003e\n\u003cli\u003eMax. Cable Ø - - mm\u003c\/li\u003e\n\u003cli\u003ePin Ø - - mm\u003c\/li\u003e\n\u003cli\u003eM.W.L. - 1500 kg\u003c\/li\u003e\n\u003cli\u003eB. L. - 3000 kg\u003c\/li\u003e\n\u003cli\u003eWeight - 468 g\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":44585687646456,"sku":"RF74140","price":449.9,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0691\/0899\/0200\/products\/Ronstan_Core_RF74140_Stand-up.jpg?v=1742179218"},{"product_id":"ronstan-core-rf74202-double","title":"Ronstan RF74202 – Series 75 Core Double Block (75mm)","description":"\u003cp data-start=\"578\" data-end=\"885\"\u003eThe \u003cstrong data-start=\"582\" data-end=\"629\"\u003eRonstan RF74202 Series 75 Core Double Block\u003c\/strong\u003e is engineered for high-load sailing applications where strength and performance are paramount. Featuring dual 75mm sheaves and a high-strength alloy cheek construction, this double block is perfect for halyards, mainsheet systems, and backstay tensioners.\u003c\/p\u003e\n\u003cp data-start=\"887\" data-end=\"1175\"\u003eOptimised for both rope and wire, it’s a versatile choice for racing yachts and performance cruisers. The precision-engineered bearing system ensures low-friction performance under extreme loads. Trusted by sailors worldwide, the RF74202 is your go-to block for uncompromised reliability.\u003c\/p\u003e\n\u003cp data-start=\"1177\" data-end=\"1238\"\u003eAvailable now from Barton Marine NZ with nationwide shipping.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e \u003cspan style=\"font-size: 0.875rem;\"\u003eSheave Ø - 75 mm\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003eMax. Rope Ø - 14 mm\u003c\/li\u003e\n\u003cli\u003eMax. Cable Ø - - mm\u003c\/li\u003e\n\u003cli\u003ePin Ø - - mm\u003c\/li\u003e\n\u003cli\u003eM.W.L. - 1500 kg\u003c\/li\u003e\n\u003cli\u003eB. L. - 3000 kg\u003c\/li\u003e\n\u003cli\u003eWeight - 506 g\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":44585687810296,"sku":"RF74202","price":485.0,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0691\/0899\/0200\/files\/Ronstan_Core_RF74202_Double_pulley.jpg?v=1742179203"},{"product_id":"ronstan-rf104100-100mm-core-single-pulley","title":"Ronstan RF104100 100mm Core Single Block – High Load Pulley NZ","description":"\u003cp data-start=\"442\" data-end=\"778\"\u003eThe \u003cstrong data-start=\"446\" data-end=\"495\"\u003eRonstan RF104100 Series 100 Core Single Block\u003c\/strong\u003e is a premium, heavy-duty sailing pulley engineered for \u003cstrong data-start=\"551\" data-end=\"607\"\u003ehigh-load applications on cruising and racing yachts\u003c\/strong\u003e. Featuring a \u003cstrong data-start=\"621\" data-end=\"667\"\u003e100mm glass fibre reinforced acetal sheave\u003c\/strong\u003e, it delivers smooth, efficient line handling even under extreme loads. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"780\" data-end=\"1064\"\u003eDesigned with Ronstan’s advanced \u003cstrong data-start=\"813\" data-end=\"841\"\u003etwo-stage bearing system\u003c\/strong\u003e, this block combines a full-contact bearing for high loads with ball bearings that act as thrust bearings—ensuring low friction performance across both dynamic and static conditions. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1066\" data-end=\"1323\"\u003eConstructed using \u003cstrong data-start=\"1084\" data-end=\"1153\"\u003ehard-anodised aluminium alloy cheeks and stainless steel fittings\u003c\/strong\u003e, the RF104100 offers exceptional strength, durability, and corrosion resistance—ideal for New Zealand’s harsh marine environment. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1325\" data-end=\"1523\"\u003eIts \u003cstrong data-start=\"1329\" data-end=\"1377\"\u003euniversal head with full 3-axis articulation\u003c\/strong\u003e allows the block to align perfectly under load and can be locked at 0° or 90° for optimal rigging setups. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1525\" data-end=\"1755\"\u003eSuitable for boats up to approximately \u003cstrong data-start=\"1564\" data-end=\"1578\"\u003e16m (53ft)\u003c\/strong\u003e, this block is widely used in \u003cstrong data-start=\"1609\" data-end=\"1666\"\u003emainsheet, halyard, vang, and spinnaker sheet systems\u003c\/strong\u003e, where reliability and performance are critical. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"1757\" data-end=\"1760\"\u003e\n\u003ch1 data-section-id=\"8av2ty\" data-start=\"1762\" data-end=\"1780\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"1764\" data-end=\"1780\"\u003eKey Features\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h1\u003e\n\u003cul data-start=\"1782\" data-end=\"2434\"\u003e\n\u003cli data-section-id=\"46w95h\" data-start=\"1782\" data-end=\"1837\"\u003e\n\u003cstrong data-start=\"1784\" data-end=\"1800\"\u003e100mm sheave\u003c\/strong\u003e for high-load sailing applications\u003c\/li\u003e\n\u003cli data-section-id=\"3qoez4\" data-start=\"1838\" data-end=\"1941\"\u003e\n\u003cstrong data-start=\"1840\" data-end=\"1868\"\u003eTwo-stage bearing system\u003c\/strong\u003e for low friction under all loads \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"rwe334\" data-start=\"1942\" data-end=\"2049\"\u003e\n\u003cstrong data-start=\"1944\" data-end=\"1987\"\u003eUniversal head with 3-axis articulation\u003c\/strong\u003e for optimal alignment \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1m9sxyd\" data-start=\"2050\" data-end=\"2154\"\u003eHead can be \u003cstrong data-start=\"2064\" data-end=\"2087\"\u003elocked at 0° or 90°\u003c\/strong\u003e for controlled positioning \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"c6155q\" data-start=\"2155\" data-end=\"2257\"\u003e\n\u003cstrong data-start=\"2157\" data-end=\"2183\"\u003eAluminium alloy cheeks\u003c\/strong\u003e for strength and weight reduction \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"eri5d1\" data-start=\"2258\" data-end=\"2368\"\u003e\n\u003cstrong data-start=\"2260\" data-end=\"2303\"\u003eBall bearings reduce side-load friction\u003c\/strong\u003e and improve efficiency \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1k9519m\" data-start=\"2369\" data-end=\"2434\"\u003eSuitable for \u003cstrong data-start=\"2384\" data-end=\"2432\"\u003ehigh-performance cruising and racing systems\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2436\" data-end=\"2439\"\u003e\n\u003ch1 data-section-id=\"w7qc3s\" data-start=\"2441\" data-end=\"2461\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"2443\" data-end=\"2461\"\u003eSpecifications\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h1\u003e\n\u003cul data-start=\"2463\" data-end=\"3007\"\u003e\n\u003cli data-section-id=\"az0s8l\" data-start=\"2463\" data-end=\"2529\"\u003eSheave Diameter: 100mm \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1qvwtzx\" data-start=\"2530\" data-end=\"2597\"\u003eMax Rope Diameter: 18mm \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1636sa0\" data-start=\"2598\" data-end=\"2670\"\u003eMaximum Working Load: 3250kg \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1cqrxh4\" data-start=\"2671\" data-end=\"2736\"\u003eBreaking Load: 7500kg \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1mxvcbf\" data-start=\"2737\" data-end=\"2801\"\u003eWeight: approx. 900g \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"8qx8la\" data-start=\"2802\" data-end=\"2864\"\u003ePin Diameter: 10mm \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1ddzdgw\" data-start=\"2865\" data-end=\"2970\"\u003eConstruction: Acetal sheave, alloy cheeks, stainless fittings \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1lmmy51\" data-start=\"2971\" data-end=\"3007\"\u003eHead Type: Universal swivel head\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"3009\" data-end=\"3012\"\u003e\n\u003ch1 data-section-id=\"leai45\" data-start=\"3014\" data-end=\"3069\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"3016\" data-end=\"3069\"\u003eWhy Choose the Ronstan RF104100? \u003c\/strong\u003e\u003c\/span\u003e\u003c\/h1\u003e\n\u003cp data-start=\"3071\" data-end=\"3339\"\u003eFor New Zealand sailors, the RF104100 delivers \u003cstrong data-start=\"3118\" data-end=\"3189\"\u003eexceptional strength, efficiency, and reliability under heavy loads\u003c\/strong\u003e. Whether you’re cruising offshore or racing competitively, this block provides \u003cstrong data-start=\"3269\" data-end=\"3314\"\u003esmooth operation and long-term durability\u003c\/strong\u003e in demanding conditions.\u003c\/p\u003e\n\u003cp data-start=\"3341\" data-end=\"3522\"\u003eIts advanced bearing system and high load capacity make it ideal for \u003cstrong data-start=\"3410\" data-end=\"3444\"\u003ecritical sail handling systems\u003c\/strong\u003e, ensuring confidence and performance in NZ coastal and offshore environments.\u003c\/p\u003e\n\u003c!----\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":45626130825464,"sku":"","price":599.9,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0691\/0899\/0200\/files\/Ronstan_RF104100_100mm_Single_Pulley.jpg?v=1741818656"},{"product_id":"ronstan-rf104110-core-100mm-ball-bearing-pulley-with-becket","title":"Ronstan RF104110 100mm Core Block with Becket – High Load Pulley NZ","description":"\u003cp data-start=\"456\" data-end=\"803\"\u003eThe \u003cstrong data-start=\"460\" data-end=\"522\"\u003eRonstan RF104110 Series 100 Core Block with Becket (100mm)\u003c\/strong\u003e is a \u003cstrong data-start=\"528\" data-end=\"568\"\u003eheavy-duty, high-load sailing pulley\u003c\/strong\u003e engineered for demanding offshore, cruising, and racing applications. Designed as part of Ronstan’s premium Core Block™ range, it delivers \u003cstrong data-start=\"708\" data-end=\"782\"\u003eexceptional strength, ultra-smooth operation, and long-term durability\u003c\/strong\u003e under extreme loads.\u003c\/p\u003e\n\u003cp data-start=\"805\" data-end=\"1189\"\u003eFeaturing a \u003cstrong data-start=\"817\" data-end=\"895\"\u003e100mm glass fibre reinforced acetal sheave with a two-stage bearing system\u003c\/strong\u003e, this block provides low friction performance across both light and heavy loads. The integrated \u003cstrong data-start=\"992\" data-end=\"1086\"\u003eball bearing and sliding bearing system ensures efficiency even under high load conditions\u003c\/strong\u003e, maintaining smooth line handling in critical sailing systems. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1191\" data-end=\"1516\"\u003eConstructed with \u003cstrong data-start=\"1208\" data-end=\"1279\"\u003ehard-anodised aluminium alloy cheeks and stainless steel components\u003c\/strong\u003e, the RF104110 is built to withstand harsh New Zealand marine environments. The \u003cstrong data-start=\"1359\" data-end=\"1431\"\u003eintegrated becket allows easy tie-off or multi-part purchase systems\u003c\/strong\u003e, making it ideal for complex rigging setups. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1518\" data-end=\"1722\"\u003ePerfect for \u003cstrong data-start=\"1530\" data-end=\"1581\"\u003emainsheets, halyards, vangs, and runner systems\u003c\/strong\u003e, this block is commonly used on \u003cstrong data-start=\"1614\" data-end=\"1681\"\u003ekeelboats, offshore yachts, and performance cruisers up to ~16m\u003c\/strong\u003e. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"1724\" data-end=\"1727\"\u003e\n\u003ch1 data-section-id=\"8av2ty\" data-start=\"1729\" data-end=\"1747\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"1731\" data-end=\"1747\"\u003eKey Features\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h1\u003e\n\u003cul data-start=\"1749\" data-end=\"2416\"\u003e\n\u003cli data-section-id=\"1k9aerm\" data-start=\"1749\" data-end=\"1796\"\u003e\n\u003cstrong data-start=\"1751\" data-end=\"1767\"\u003e100mm sheave\u003c\/strong\u003e for high-load applications\u003c\/li\u003e\n\u003cli data-section-id=\"f5azix\" data-start=\"1797\" data-end=\"1903\"\u003e\n\u003cstrong data-start=\"1799\" data-end=\"1827\"\u003eTwo-stage bearing system\u003c\/strong\u003e for low friction across load ranges \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"swycba\" data-start=\"1904\" data-end=\"1962\"\u003eIntegrated \u003cstrong data-start=\"1917\" data-end=\"1960\"\u003ebecket for tie-off and purchase systems\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"19sm3qj\" data-start=\"1963\" data-end=\"2071\"\u003e\n\u003cstrong data-start=\"1965\" data-end=\"1991\"\u003eAluminium alloy cheeks\u003c\/strong\u003e for maximum strength and reduced weight \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"ggbzlz\" data-start=\"2072\" data-end=\"2183\"\u003e\n\u003cstrong data-start=\"2074\" data-end=\"2114\"\u003eBall bearings act as thrust bearings\u003c\/strong\u003e to reduce side-load friction \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1fa6sb8\" data-start=\"2184\" data-end=\"2247\"\u003e\n\u003cstrong data-start=\"2186\" data-end=\"2223\"\u003eUniversal head with 360° rotation\u003c\/strong\u003e and locking positions\u003c\/li\u003e\n\u003cli data-section-id=\"1h355e6\" data-start=\"2248\" data-end=\"2350\"\u003eSuitable for \u003cstrong data-start=\"2263\" data-end=\"2310\"\u003epre-spliced lines with removable becket pin\u003c\/strong\u003e \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"kr10m3\" data-start=\"2351\" data-end=\"2416\"\u003eDesigned for \u003cstrong data-start=\"2366\" data-end=\"2416\"\u003eoffshore, racing, and high-performance sailing\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2418\" data-end=\"2421\"\u003e\n\u003ch1 data-section-id=\"w7qc3s\" data-start=\"2423\" data-end=\"2443\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"2425\" data-end=\"2443\"\u003eSpecifications\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h1\u003e\n\u003cul data-start=\"2445\" data-end=\"3043\"\u003e\n\u003cli data-section-id=\"c4dys5\" data-start=\"2445\" data-end=\"2509\"\u003eSheave Diameter: 100mm \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"tmp3tp\" data-start=\"2510\" data-end=\"2575\"\u003eMax Rope Diameter: 18mm \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1djjrmw\" data-start=\"2576\" data-end=\"2648\"\u003eMaximum Working Load: 3250kg \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"f5evug\" data-start=\"2649\" data-end=\"2714\"\u003eBreaking Load: 7500kg \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"16fe3uq\" data-start=\"2715\" data-end=\"2780\"\u003eWeight: approx. 1098g \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"145v1a6\" data-start=\"2781\" data-end=\"2843\"\u003ePin Diameter: 10mm \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"70cq9c\" data-start=\"2844\" data-end=\"2949\"\u003eConstruction: Acetal sheave, alloy cheeks, stainless fittings \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1kowid2\" data-start=\"2950\" data-end=\"3043\"\u003eType: Single block with becket and universal head \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"3045\" data-end=\"3048\"\u003e\n\u003ch1 data-section-id=\"bu01xw\" data-start=\"3050\" data-end=\"3105\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"3052\" data-end=\"3105\"\u003eWhy Choose the Ronstan RF104110? \u003c\/strong\u003e\u003c\/span\u003e\u003c\/h1\u003e\n\u003cp data-start=\"3107\" data-end=\"3384\"\u003eFor New Zealand sailors operating in \u003cstrong data-start=\"3144\" data-end=\"3179\"\u003ecoastal and offshore conditions\u003c\/strong\u003e, the RF104110 delivers \u003cstrong data-start=\"3203\" data-end=\"3246\"\u003emaximum reliability under extreme loads\u003c\/strong\u003e. Its advanced bearing system ensures smooth performance even when heavily loaded, making it ideal for \u003cstrong data-start=\"3349\" data-end=\"3383\"\u003ecritical sail handling systems\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"3386\" data-end=\"3542\"\u003eThis block is a premium choice for sailors who demand \u003cstrong data-start=\"3440\" data-end=\"3490\"\u003estrength, efficiency, and long-term durability\u003c\/strong\u003e, whether cruising offshore or racing competitively.\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":46344736473336,"sku":"","price":819.9,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0691\/0899\/0200\/files\/Ronstan_RF104110_100mm_Core_Pulley_with_Becket.jpg?v=1744258902"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0691\/0899\/0200\/collections\/RF74100.jpg?v=1724196893","url":"https:\/\/bartonmarine.co.nz\/collections\/ronstan-75mm-100mm-ball-bearing-pulleys.oembed","provider":"Barton Marine","version":"1.0","type":"link"}