{"product_id":"ronstan-series-40-ball-bearing-orbit-cheek-block","title":"Ronstan Series 40 Ball Bearing Orbit Cheek Block","description":"\u003cp\u003eRonstan Series 40 Orbit Block™ cheek\/foot block with 2-stage orbital ball bearing system. Ultra lightweight at just 32g with the highest working load in its class. Low profile, compact and high performance. Requires 3 x 4mm (5\/32”) countersunk head fasteners.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eUltra Lightweight\u003c\/strong\u003e\u003cbr\u003eKilogram for kilogram of working load, Ronstan Orbit Blocks™ are the world’s lightest. The unique orbital design places bearings only in the active areas of the floating sheave, minimising mass. Results in a 30% weight saving advantage over the nearest competitor.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHighest Working Load in Class\u003c\/strong\u003e\u003cbr\u003eThe orbital ball-bearing arrangement maximises bearing race diameter for peak load performance. The proven 2-stage bearing system features high compression grade acetal ball bearings and a secondary full-contact bearing, giving minimum friction across the full working load range. The floating sheave and bearing system is supported by a computer-modelled, stress-optimised fibre-reinforced load frame.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eApplications\u003c\/strong\u003e\u003cbr\u003e- Mainsheet and spinnaker sheets on dinghies to 5m (16ft)\u003cbr\u003e- Halyard, vang and backstay on boats to 8m (26ft)\u003cbr\u003e- Control line applications on larger yachts\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003ePart No.:\u003c\/strong\u003e RF45151\u003cbr\u003e\u003cstrong\u003eType:\u003c\/strong\u003e Cheek \/ foot\u003cbr\u003e\u003cstrong\u003eSheave Diameter:\u003c\/strong\u003e 40mm\u003cbr\u003e\u003cstrong\u003eMax. Rope Diameter:\u003c\/strong\u003e 9mm\u003cbr\u003e\u003cstrong\u003eBreaking Load:\u003c\/strong\u003e 700kg\u003cbr\u003e\u003cstrong\u003eMax. Working Load:\u003c\/strong\u003e 325kg\u003cbr\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e 32g\u003cbr\u003e\u003cstrong\u003eFasteners:\u003c\/strong\u003e 3 x 4mm (5\/32”) countersunk (not included)\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eMaterials\u003c\/strong\u003e\u003cbr\u003eSheave: Carbon fibre reinforced, PTFE impregnated nylon\u003cbr\u003eBall bearings: High compression strength acetal\u003cbr\u003eStage 2 bearing: Glass fibre reinforced, MoS2 impregnated nylon\u003cbr\u003eFrame\/cheeks: Toughened glass fibre reinforced nylon\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":48556475121896,"sku":"9316800393602","price":34.9,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0779\/9065\/8280\/files\/9316800393602_1.jpg?v=1778738186","url":"https:\/\/boatharbourmarine.com.au\/products\/ronstan-series-40-ball-bearing-orbit-cheek-block","provider":"Boat Harbour Marine","version":"1.0","type":"link"}