{"product_id":"ronstan-rf45130-series-40-ball-bearing-orbit-block-single-becket-with-cleat-and-swivel-head","title":"Ronstan RF45130 Series 40 Ball Bearing Orbit Block, Single Becket with Cleat and Swivel Head","description":"\u003cp\u003e\u003cstrong\u003eSeries 40 Ball Bearing Orbit Block - Single - Becket - Cleat - Swivel Head\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\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\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eLightweight\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eKilogram for kilogram of working load, BB and RT Orbit Blocks are the worlds lightest. The unique orbital design allows the bearing to only be in the active areas of the floating sheave. This minimizes the mass of the inactive return race and hub.\u003c\/p\u003e\u003cp\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.\u003c\/p\u003e\u003cp\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.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHighest Working Load In It's Class\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe orbital ball-bearing arrangement gives the largest possible bearing race diameter. This maximizes 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.\u003c\/p\u003e\u003cp\u003eThe floating sheave and bearing system is supported by a fiber-reinforced load frame. The design was computer modeled to be stress optimized.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eApplications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eMainsheet systems on spinnaker sheet on dinghies to 5m (16ft)\u003c\/li\u003e\n\u003cli\u003eSpinnaker sheets on dinghies, sportsboats and small keel boats to 5m (16ft)\u003c\/li\u003e\n\u003cli\u003eHalyard, vang and backstay applications on boats to 8m (26ft)\u003c\/li\u003e\n\u003cli\u003eControl line applications on larger yachts\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eMaterials:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBall Bearings - High compression strength 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 fiber reinforced, PTFE impregnated Nylon\u003c\/li\u003e\n\u003c\/ul\u003e \u003c!--- cis2:m2lsl5xp ---\u003e\n\u003cp\u003e\u003cstrong\u003eRonstan Series 40 Ball Bearing Orbit Block RF45130\u003c\/strong\u003e is a lightweight, low-friction sailing block designed for dinghies, sportsboats, small keel boats, and larger yacht control-line systems. Its single-becket configuration with cleat and swivel head provides versatile line handling for mainsheet, spinnaker sheet, halyard, vang, and backstay applications while helping reduce weight and bulk aloft or within a control system.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThe low-friction, two-stage orbital ball bearing system is engineered to support high working loads while allowing the bearing to remain concentrated in the active areas of the floating sheave. This orbital design reduces the mass of the inactive return race and hub. A through-sheave becket arrangement further contributes to the lightweight construction, while the low-profile, compact form\u003cstyle\u003etable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }\u003c\/style\u003e\n\u003c\/p\u003e\u003ctable class=\"productattributes\"\u003e\n\u003cthead\u003e\u003ctr\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\u003ctd\u003eTruck Freight: No\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eOversized: No\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cbr\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":44881669587033,"sku":"70624","price":109.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0623\/1818\/2489\/files\/70624XL.jpg?v=1789193630","url":"https:\/\/www.marinepartsonly.com\/products\/ronstan-rf45130-series-40-ball-bearing-orbit-block-single-becket-with-cleat-and-swivel-head","provider":"Marine Parts Only","version":"1.0","type":"link"}