{"product_id":"ronstan-rf48000-series-40-orbit-bb-sheave-1-9-16-inch-sailboat-block-replacement","title":"Ronstan RF48000 Series 40 Orbit BB Sheave, 1-9\/16-Inch Sailboat Block Replacement","description":"\u003cp\u003e\u003cstrong\u003eSeries 40 Orbit BB Sheave\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eBall Bearing versions incorporate the 2-stage bearing system using ball bearings to minimize friction and a secondary full-contact bearing to maintain low friction across the full working load range.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSheave\u003c\/li\u003e\n\u003cli\u003eCaptive BB\u003c\/li\u003e\n\u003cli\u003eWidth: 15.5mm\/5\/8\"\u003c\/li\u003e\n\u003cli\u003eSheave Diameter: 40mm\/1-9\/16\"\u003c\/li\u003e\n\u003cli\u003eMaximum Rope: 10mm\/3\/8\"\u003c\/li\u003e\n\u003cli\u003eM.W.L.: 400kg\/880lbs\u003c\/li\u003e\n\u003cli\u003eWeight: 30g\/1.1oz\u003c\/li\u003e\n\u003c\/ul\u003e \u003c!--- cis2:m2lsl5xp ---\u003e\n\u003cp\u003eThe Ronstan RF48000 Series 40 Orbit BB Sheave is a ball-bearing sheave designed for sailing hardware applications requiring smooth, low-friction rope movement. Its two-stage bearing system uses ball bearings to minimize friction, while a secondary full-contact bearing helps maintain low friction across the full working load range.\u003c\/p\u003e\u003cp\u003eDesigned for use with sailing blocks and related marine rigging hardware, this captive ball-bearing sheave accommodates rope up to 3\/8 inch. The compact 1-9\/16-inch sheave diameter and 5\/8-inch width make it a practical replacement or component for compatible Series 40 Orbit systems. With a maximum working load of 880 pounds, the Ronstan RF48000 supports demanding sailing applications within its rated specifications.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo-stage bearing system:\u003c\/strong\u003e Combines ball bearings with a secondary full-contact bearing to help minimize friction across the working load range.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCaptive ball bearing:\u003c\/strong\u003e Provides a purpose-built bearing configuration for smooth operation in compatible Series 40 Orbit hardware.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRope capacity:\u003c\/strong\u003e Accepts rope up to 3\/8 inch for common marine rigging applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh working load:\u003c\/strong\u003e Rated for a maximum working load of 880 pounds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact marine component:\u003c\/strong\u003e Offers a 1-9\/16-inch sheave diameter and weighs approximately 1.1 ounces.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eProduct Details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Ronstan\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e RF48000\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct type:\u003c\/strong\u003e Series 40 Orbit BB sheave\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBearing type:\u003c\/strong\u003e Captive ball bearing with secondary full-contact bearing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSheave diameter:\u003c\/strong\u003e 1-9\/16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 5\/8 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum rope size:\u003c\/strong\u003e 3\/8 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum working load:\u003c\/strong\u003e 880 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1.1 ounces\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eChoose the Ronstan RF48000 Series 40 Orbit BB Sheave when you need a compact, low-friction sheave for compatible sailing and marine rigging hardware.\u003c\/p\u003e\u003ch3\u003eSEO Meta Description\u003c\/h3\u003e\u003cp\u003eShop the Ronstan RF48000 Series 40 Orbit BB Sheave with captive ball bearings, 3\/8-inch rope capacity, and an 880-pound working load.\u003c\/p\u003e\u003cstyle\u003etable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }\u003c\/style\u003e\n\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":44937129001049,"sku":"97304","price":37.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0623\/1818\/2489\/files\/97304XL.jpg?v=1789839473","url":"https:\/\/www.marinepartsonly.com\/products\/ronstan-rf48000-series-40-orbit-bb-sheave-1-9-16-inch-sailboat-block-replacement","provider":"Marine Parts Only","version":"1.0","type":"link"}