{"product_id":"ronstan-series-40-bb-orbit-block-single-bkt-cleat-swivelhead","title":"Ronstan Series 40 BB Orbit Block, Single,Bkt,Cleat,SwivelHead","description":"\u003c!--TABS SUP --\u003e\u003cdiv class=\"paragraph\"\u003e\n\u003cstrong\u003eManufacturer part #:\u003c\/strong\u003eRF45130\u003cdiv class=\"container\"\u003e\n\u003cdiv class=\"cabDes\"\u003eTechnical Description\u003c\/div\u003e\n\u003cdiv class=\"col-4 menu units\"\u003eFeatures\u003c\/div\u003e\n\u003cdiv class=\"col-4 menu units\"\u003eAmerican\u003c\/div\u003e\n\u003cdiv class=\"col-4 menu units\"\u003eMetric\u003c\/div\u003e\n\u003cdiv class=\"col-4 col-12M menu\"\u003eDescription\u003c\/div\u003e\n\u003cdiv class=\"cell col-8 col-12M\"\u003eSeries 40 BB Orbit Single Becket Block\u003c\/div\u003e\n\u003cdiv class=\"col-4 col-12M menu\"\u003eSheave Ø\u003c\/div\u003e\n\u003cdiv class=\"cell col-4 col-6M\"\u003e1 9\/16 in\u003c\/div\u003e\n\u003cdiv class=\"cell col-4 col-6M\"\u003e40 mm\u003c\/div\u003e\n\u003cdiv class=\"col-4 col-12M menu\"\u003eMaximum Rope Ø\u003c\/div\u003e\n\u003cdiv class=\"cell col-4 col-6M\"\u003e5\/16 in\u003c\/div\u003e\n\u003cdiv class=\"cell col-4 col-6M\"\u003e9 mm\u003c\/div\u003e\n\u003cdiv class=\"col-4 col-12M menu\"\u003eMaximum Working Load\u003c\/div\u003e\n\u003cdiv class=\"cell col-4 col-6M\"\u003e715 lb\u003c\/div\u003e\n\u003cdiv class=\"cell col-4 col-6M\"\u003e325 kg\u003c\/div\u003e\n\u003cdiv class=\"col-4 col-12M menu\"\u003eBreaking Load\u003c\/div\u003e\n\u003cdiv class=\"cell col-4 col-6M\"\u003e1540 lb\u003c\/div\u003e\n\u003cdiv class=\"cell col-4 col-6M\"\u003e700 kg\u003c\/div\u003e\n\u003cdiv class=\"col-4 col-12M menu\"\u003eWeight\u003c\/div\u003e\n\u003cdiv class=\"cell col-4 col-6M\"\u003e3.7 oz\u003c\/div\u003e\n\u003cdiv class=\"cell col-4 col-6M\"\u003e105 g\u003c\/div\u003e\n\u003c!--TABS  --\u003e\u003cdiv class=\"paragraph\"\u003e\n\u003cstrong\u003eManufacturer part #:\u003c\/strong\u003eRF45130\u003cbr\u003e\u003cbr\u003e\u003cli\u003eUltra Lightweight\u003c\/li\u003e\n\u003cli\u003eLow friction 2-stage Orbital ball bearing system\u003c\/li\u003e\n\u003cli\u003eHighest working load in its class\u003c\/li\u003e\n\u003cli\u003eLow profile and compact\u003c\/li\u003e\n\u003cli\u003eHigh performance cleating\u003c\/li\u003e\n\u003cstrong\u003eLightweight\u003c\/strong\u003e\u003cbr\u003eKilogram for kilogram of working load, BB and RT Orbit Blocks„¢ are the world's lightest. The unique orbital design allows the bearing to only be in the active areas of the floating sheave. This minimises the mass of the inactive return race and hub.\u003cbr\u003e\u003cbr\u003eWeight and bulk are further reduced in the different block configurations. The ball bearing single and becket block has a through-sheave becket arrangement. The result? The lowest weight possible.\u003cbr\u003e\u003cbr\u003eMulti-sheave blocks have only single intermediate cheeks and an ultra-light and efficient head arrangement. This gives a 30% weight saving advantage over the nearest competitor. Other brands just link together their Single Blocks. This results in unnecessary double cheeks between each sheave, held together by a heavy steel channel across the top of the block.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eHighest working load in its class\u003c\/strong\u003e\u003cbr\u003eThe orbital ball-bearing arrangement gives the largest possible bearing race diameter. This maximises load performance. The proven Ronstan 2-stage bearing system features high compression grade acetal ball bearings and a secondary full-contact bearing. This gives minimum friction across the full working load range.\u003cbr\u003e\u003cbr\u003eThe floating sheave and bearing system is supported by a fibre-reinforced load frame. The design was computer modelled to be stress optimised.\u003cbr\u003e\u003cbr\u003e\u003cspan class=\"subtitles_red\"\u003eApplications\u003c\/span\u003e\u003cbr\u003e\u003cli\u003eMainsheet systems on spinnaker sheet on dinghies to 5 m (16 ft)\u003c\/li\u003e\n\u003cli\u003eSpinnaker sheets on dinghies, sportsboats and small keel boats to 5 m (16 ft)\u003c\/li\u003e\n\u003cli\u003eHalyard, vang and backstay applications on boats to 8 m (26 ft)\u003c\/li\u003e\n\u003cli\u003eControl line applications on larger yachts\u003c\/li\u003e\n\u003cspan class=\"subtitles_red\"\u003eMaterials\u003c\/span\u003e\u003cbr\u003e\u003cli\u003eBall Bearings - High compression stregnth carbon black Acetal\u003c\/li\u003e\n\u003cli\u003eStage 2 Bearing - Glass fibre reinforced, MoS2 impregnated Nylon\u003c\/li\u003e\n\u003cli\u003eFrame\/Cheeks - Toughened, glass fibre reinforced Nylon\u003c\/li\u003e\n\u003cli\u003eSheave - Carbon fibre reinforced, PTFE impreganated Nylon\u003c\/li\u003e\n\u003c\/div\u003e\n\u003c!-- FIN SCRIP PANLS --\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Ronstan Sailboat Hardware","offers":[{"title":"Default Title","offer_id":53594372964724,"sku":"RONRF45130","price":101.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0934\/4004\/9524\/files\/RONRF45130-2__70334.jpg.1428984928.jpg?v=1761730352","url":"https:\/\/velasailingsupply.com\/products\/ronstan-series-40-bb-orbit-block-single-bkt-cleat-swivelhead","provider":"Vela Sailing Supply","version":"1.0","type":"link"}