{"product_id":"block-foot-double-series-75-core-block","title":"Block,Foot,Double. Series 75 Core Block#","description":"\u003cp\u003eBLOCK,FOOT,DOUBLE\u003c\/p\u003e\n\u003cp\u003eSERIES 75 CORE BLOCK\u003c\/p\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdiv id=\"product-top\" class=\"large-7 columns\"\u003e\n\u003ch2\u003e\n\u003cimg border=\"0\" src=\"http:\/\/www.ronstan.com\/images\/block\/UB.gif\"\u003e Series 75\u003c\/h2\u003e\n\u003ch3 class=\"subheader\"\u003e\n\u003cimg border=\"0\" src=\"http:\/\/www.ronstan.com\/images\/block\/Ronstan_Red_Dot_Core_Block.gif\"\u003e \u003c\/h3\u003e\n\u003ch3 class=\"subheader\"\u003eFEATURES\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eClass leading performance and sleek, contemporary styling\u003c\/li\u003e\n\u003cli\u003eExcellent dynamic and high static load performance\u003c\/li\u003e\n\u003cli\u003eLess than half the friction of the nearest competitor\u003c\/li\u003e\n\u003cli\u003e** Total block load. Maximum load on top sheave not to exceed 50% of total block load\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"large-5 columns product-image\"\u003e\n\u003cimg src=\"http:\/\/www.ronstan.com\/images\/product\/RF74251.jpg\"\u003e \u003csmall\u003e \u003c\/small\u003e \u003cbr\u003e\u003cbr\u003e\n\u003cdiv class=\"prod-spec\"\u003e\n\u003cform method=\"post\" name=\"form\" class=\"units\" action=\"http:\/\/www.ronstan.com.au\/marine5\/product.asp?ProdNo=RF74251\"\u003e\u003cinput type=\"image\" border=\"0\" src=\"http:\/\/www.ronstan.com.au\/images\/marine\/ImperialMetricmarine1.gif\" name=\"submit\" value=\"Metric\" width=\"105\" height=\"13\" alt=\"Change to Metric Measurements\" class=\"plain\"\u003e\u003c\/form\u003e\n\u003ctable cellspacing=\"0\" cellpadding=\"0\" width=\"100%\" border=\"0\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth class=\"text-left\" id=\"eight\"\u003eSheave Ø\u003c\/th\u003e\n\u003ctd class=\"text-left\" id=\"eight\"\u003e75 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"text-left\"\u003eMax. Rope Ø\u003c\/th\u003e\n\u003ctd class=\"text-left\"\u003emm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"text-left\" id=\"eight\"\u003eMax. Cable Ø\u003c\/th\u003e\n\u003ctd class=\"text-left\" id=\"eight\"\u003emm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"text-left\"\u003ePin Ø\u003c\/th\u003e\n\u003ctd class=\"text-left\"\u003e- mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"text-left\" id=\"eight\"\u003eM.W.L.\u003c\/th\u003e\n\u003ctd class=\"text-left\" id=\"eight\"\u003e1500** kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"text-left\"\u003eB. L.\u003c\/th\u003e\n\u003ctd class=\"text-left\"\u003e3000** kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"text-left\" id=\"eight\"\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"text-left\" id=\"eight\"\u003e530 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"row collapse\"\u003e\n\u003cdiv class=\"large-12 columns\"\u003e\n\u003chr\u003e\n\u003cbr\u003e\u003cbr\u003e\n\u003chr\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"row collapse\"\u003e\n\u003cdiv class=\"large-9 columns \"\u003e\n\u003ca name=\"info\"\u003e\u003c\/a\u003e\n\u003ch3 class=\"subheader\"\u003ePRODUCT INFORMATION\u003c\/h3\u003e\n\u003cdiv minmax_bound=\"true\"\u003eCore Blocks™ are a true all round solution. A tuned 2-stage bearing system provides excellent performance across the full working load range with an integrated thrust bearing feature and the resilience to handle high dynamic or static loads. Acetal sheave, alloy cheeks and stainless fixings complete the durable package. For reliability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for cruising and racing.\u003c\/div\u003e\n\u003cdiv minmax_bound=\"true\"\u003e \u003c\/div\u003e\n\u003cdiv minmax_bound=\"true\"\u003e\n\u003cp minmax_bound=\"true\"\u003e\u003cstrong minmax_bound=\"true\"\u003eUniversal Bearing -\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp minmax_bound=\"true\"\u003eDynamic and high static load performance\u003c\/p\u003e\n\u003cp minmax_bound=\"true\"\u003eThe Ronstan Universal Bearing incorporates our proven 2-stage bearing system\u003c\/p\u003e\n\u003cp minmax_bound=\"true\"\u003eStage 1 - Under moderate loads, Acetal ball bearings ensure minimum friction.\u003c\/p\u003e\n\u003cp minmax_bound=\"true\"\u003eStage 2 - Under heavy loads, where deformation of ball bearings alone would result in increased friction, a sliding Acetal bearing on a polished stainless steel race takes over, maintaining low friction performance.\u003c\/p\u003e\n\u003cp minmax_bound=\"true\"\u003eAdditionally the ball bearings are configured to act as a thrust bearing between the sheave and cheeks, preventing the sheave from rubbing on the cheeks and causing friction when the line lead in and out of the block isn’t perfect. Particularly important for cheek blocks.\u003c\/p\u003e\n\u003cp minmax_bound=\"true\"\u003e\u003cstrong minmax_bound=\"true\"\u003eAlloy cheek plates\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp minmax_bound=\"true\"\u003eBlock cheeks are manufactured from the highest quality alloy for maximum strength. Material optimisation and the cut-away design minimises weight and allows easy fresh water rinsing of salt and debris from the bearings.  Cheek design has been further styled with flaring at the block throat and reduced gap between the cheek and sheave, minimising rope wear.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003chr\u003e\n\u003ca name=\"applications\"\u003e\u003c\/a\u003e\n\u003ch3 class=\"subheader\"\u003eAPPLICATIONS\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIdeal for use on mainsheet, spinnaker sheet, vang, halyard and backstay applications on boats up to 14m (46ft).\u003c\/li\u003e\n\u003cli\u003eGeneral applications on larger yachts.\u003c\/li\u003e\n\u003cli\u003eAlloy sheave models are available for use with wire.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ca name=\"materials\"\u003e\u003c\/a\u003e\n\u003ch3 class=\"subheader\"\u003eMATERIALS\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSheave: U.V. stabilised acetal or anodised aluminium (AW models).\u003c\/li\u003e\n\u003cli\u003eCheek plates: Aluminium alloy\u003c\/li\u003e\n\u003cli\u003eBall Bearings: High compression strength carbon black acetal.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":52812137890021,"sku":"RF74251","price":460.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0752\/6495\/0501\/files\/RF74251.jpg?v=1789272590","url":"https:\/\/www.stevestonmarine.com\/products\/block-foot-double-series-75-core-block","provider":"Steveston Marine and Hardware","version":"1.0","type":"link"}