{"product_id":"series-40-ball-bearing-orbit-block™-lightweight-cheek","title":"Series 40 Ball Bearing Orbit Block™, Lightweight Cheek","description":"\u003cp\u003eLightweight single sheave 40mm cheek block, requires 3 x 4mm (5\/32\") fasteners\u003c\/p\u003e\n\u003cdiv class=\"product-info-price\"\u003e\n\u003ch3\u003eFEATURES\u003c\/h3\u003e\n\u003cdiv class=\"product-features\"\u003e\n\u003cp\u003eUltra Lightweight.\u003c\/p\u003e\n\u003cp\u003eLow friction 2-stage Orbital ball bearing system.\u003c\/p\u003e\n\u003cp\u003eHighest working load in its class.\u003c\/p\u003e\n\u003cp\u003eLow profile and compact.\u003c\/p\u003e\n\u003cp\u003eHigh performance cleatingBase suits curved mounting surface.\u003c\/p\u003e\n\u003cp\u003eLow mounting points for maximum strength.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003eSPECIFICATIONS\u003c\/h3\u003e\n\u003cdiv class=\"product-spec additional-attributes-wrapper table-wrapper\"\u003e\n\u003ctable class=\"data table additional-attributes\" id=\"product-attribute-specs-table\"\u003e\n\u003ccaption class=\"table-caption\"\u003eProduct Specifications\u003c\/caption\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth class=\"col label\" data-th=\"type_of_block\" scope=\"row\"\u003eType of Block\u003c\/th\u003e\n\u003ctd class=\"col data\" data-td=\"type_of_block\"\u003eCheek\/Foot\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"col label\" data-th=\"dia_sheave_mm\" scope=\"row\"\u003eSheave diameter (mm)\u003c\/th\u003e\n\u003ctd class=\"col data\" data-td=\"dia_sheave_mm\"\u003e40mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"col label\" data-th=\"load_bl_kg\" scope=\"row\"\u003eB.L. (kg)\u003c\/th\u003e\n\u003ctd class=\"col data\" data-td=\"load_bl_kg\"\u003e700\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"col label\" data-th=\"load_mwl_kg\" scope=\"row\"\u003eM.W.L. (kg)\u003c\/th\u003e\n\u003ctd class=\"col data\" data-td=\"load_mwl_kg\"\u003e325\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"col label\" data-th=\"dia_rope_max_mm\" scope=\"row\"\u003eMax. Rope diameter (mm)\u003c\/th\u003e\n\u003ctd class=\"col data\" data-td=\"dia_rope_max_mm\"\u003e9\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"col label\" data-th=\"weight_g\" scope=\"row\"\u003eWeight (g)\u003c\/th\u003e\n\u003ctd class=\"col data\" data-td=\"weight_g\"\u003e32\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"col label\" data-th=\"fasteners_mm\" scope=\"row\"\u003eFastener Ø (mm)\u003c\/th\u003e\n\u003ctd class=\"col data\" data-td=\"fasteners_mm\"\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"col label\" data-th=\"qty_fastener\" scope=\"row\"\u003eQty. Fasteners\u003c\/th\u003e\n\u003ctd class=\"col data\" data-td=\"qty_fastener\"\u003e3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\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. Weight 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. Multi-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.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHighest working load in its class\u003c\/strong\u003e\u003cbr\u003e. The 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. The floating sheave and bearing system is supported by a fibre-reinforced load frame. The design was computer modelled to be stress optimised.\u003c\/p\u003e\n\u003cp\u003eRecommended fasteners - 3 x 4mm (5\/32\") countersunk head screws.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":54301289906451,"sku":null,"price":345.0,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0903\/7001\/5507\/files\/RonstanSeries40BallBearingOrbitBlock_LightweightCheek.png?v=1781605905","url":"https:\/\/rigginghk.com\/zh-hant\/products\/series-40-ball-bearing-orbit-block%e2%84%a2-lightweight-cheek","provider":"Rigging HK","version":"1.0","type":"link"}