{"product_id":"rf35100-30bb-single-becket-swivel","title":"Ronstan, Series 30 Ball Bearing Orbit Block™, Becket and Swivel Shackle, RF35100","description":"\u003cp\u003eThe Ball Bearing Orbit Blocks™ offer the highest strength-to-weight ratio available, achieved through composite reinforced polymer materials and multiple attachment options. Their precision design ensures an optimal number of ball bearings for minimal friction, while weight reduction is accomplished using fibre-reinforced composites in the block head, cleat arms, and beckets. These blocks are the world's lightest in terms of working load. By eliminating heavy steel components, Ronstan has replaced nearly all metal parts with high-tech polymers and fibre equivalents. The ball bearing single and becket block features a through-sheave becket arrangement, resulting in the lowest possible weight. Multi-sheave blocks have a single intermediate cheek and an ultra-light head arrangement. Unlike other brands, Ronstan avoids unnecessary weight and bulk.\u003c\/p\u003e\u003cp\u003eThe Ronstan 2-stage bearing system, used in Series 30 and larger, includes high compression grade Acetal ball bearings and a secondary full-contact bearing, ensuring minimal friction across the working load range.\u003c\/p\u003e\u003ch4\u003eSpecifications\u003c\/h4\u003e\u003cul\u003e\u003cli\u003e\u003cstrong\u003eB.L. (kg):\u003c\/strong\u003e 600\u003c\/li\u003e\u003cli\u003e\u003cstrong\u003eM.W.L. (kg):\u003c\/strong\u003e 300\u003c\/li\u003e\u003cli\u003e\u003cstrong\u003eMax. Rope diameter (mm):\u003c\/strong\u003e 8\u003c\/li\u003e\u003cli\u003e\u003cstrong\u003ePin Ø (mm):\u003c\/strong\u003e 4\u003c\/li\u003e\u003cli\u003e\u003cstrong\u003eSheave diameter (mm):\u003c\/strong\u003e 30\u003c\/li\u003e\u003cli\u003e\u003cstrong\u003eType of Block:\u003c\/strong\u003e Single\u003c\/li\u003e\u003cli\u003e\u003cstrong\u003eWeight (g):\u003c\/strong\u003e 32\u003c\/li\u003e\u003c\/ul\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":56267048452441,"sku":"65511030","price":29.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0889\/1737\/7369\/files\/LHTC7539.jpg?v=1759242883","url":"https:\/\/nauticpro.net\/products\/rf35100-30bb-single-becket-swivel","provider":"NauticPro","version":"1.0","type":"link"}