{"product_id":"ronstan-series-25-ball-bearing-hhl-lashing-orbit-block-rf28109hl-for-high-load-sailing-applications","title":"Ronstan Series 25 Ball Bearing HHL Lashing Orbit Block RF28109HL for High-Load Sailing Applications","description":"\u003cp id=\"isPasted\"\u003e\u003cstrong\u003eSeries 25 Ball Bearing HHL Lashing Orbit Block\u003c\/strong\u003e\u003c\/p\u003e\u003cp id=\"isPasted\"\u003eSingle sheave ball bearing high load block with becket hub option and lashing head.\u003c\/p\u003e\u003cp id=\"isPasted\"\u003eThe Series 25 Ball Bearing Orbit Blocks deliver superior strength, reduced weight, and exceptional performance for high-demand dinghy and small boat applications.\u003c\/p\u003e\u003cp\u003eDesigned with competitive sailors and performance boats in mind, these compact 25mm blocks are engineered to achieve the highest possible strength-to-weight ratio. Featuring Ronstans renowned high-compression strength acetal bearing system, the Series 25 BB Orbit Blocks are a lightweight yet durable solution, ideal for control line systems such as mainsheet and spinnaker sheet turning blocks, cunninghams, and cascading vangs on dinghies up to 4 metres.\u003c\/p\u003e\u003cp\u003eEach block has a stainless steel hub for versatile lashing attachments and through-sheave becket functionality, making them adaptable to a wide range of rigging setups. The hub accommodates up to 4mm (5\/32) lashing and ensures maximum efficiency without compromising reliability.\u003c\/p\u003e\u003cp\u003eThe range also includes a High Load (HHL) variant  the RF28109HL  which is equipped with a Grade 2205 stainless steel sheave and bearing race, paired with Grade 304 stainless steel ball bearings. These HHL blocks are purpose-built for high-load applications and are increasingly in demand for modern performance and foiling boats using small-diameter lines to carry significant loads.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e2-stage ball bearing system.\u003c\/li\u003e\n\u003cli\u003eSuits up to 8mm (5\/16) lines.\u003c\/li\u003e\n\u003cli\u003eHollow hub for becket take-off.\u003c\/li\u003e\n\u003cli\u003eLashing blocks suit up to 4mm (5\/32) lashing.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul style='box-sizing: border-box; border: 0px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-variant-emoji: inherit; font-weight: 400; font-stretch: inherit; font-size: 14px; line-height: inherit; font-family: -apple-system, BlinkMacSystemFont, \"Segoe UI\", Roboto, \"Helvetica Neue\", Arial, sans-serif, \"Apple Color Emoji\", \"Segoe UI Emoji\", \"Segoe UI Symbol\"; font-optical-sizing: inherit; font-size-adjust: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; margin: 0px; padding: 0px; vertical-align: baseline; list-style: inside disc; color: rgb(33, 37, 41); letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: rgb(255, 255, 255); text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;'\u003e\n\u003cli style=\"box-sizing: border-box; border: 0px; font: inherit; margin: 15px 0px; padding: 0px; vertical-align: baseline; display: list-item; list-style-type: disc;\"\u003eMax. Rope diameter (in): 5\/16\u003c\/li\u003e\n\u003cli style=\"box-sizing: border-box; border: 0px; font: inherit; margin: 15px 0px; padding: 0px; vertical-align: baseline; display: list-item; list-style-type: disc;\"\u003eM.W.L. (lb): 880\u003c\/li\u003e\n\u003cli style=\"box-sizing: border-box; border: 0px; font: inherit; margin: 15px 0px; padding: 0px; vertical-align: baseline; display: list-item; list-style-type: disc;\"\u003eSheave diameter (in): 1\u003c\/li\u003e\n\u003cli style=\"box-sizing: border-box; border: 0px; font: inherit; margin: 15px 0px; padding: 0px; vertical-align: baseline; display: list-item; list-style-type: disc;\"\u003eB.L. (lb): 2650\u003c\/li\u003e\n\u003cli style=\"box-sizing: border-box; border: 0px; font: inherit; margin: 15px 0px; padding: 0px; vertical-align: baseline; display: list-item; list-style-type: disc;\"\u003eWeight (oz): 1.2\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eApplications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul style='box-sizing: border-box; border: 0px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-variant-alternates: inherit; font-variant-position: inherit; font-variant-emoji: inherit; font-weight: 400; font-stretch: inherit; font-size: 14px; line-height: inherit; font-family: -apple-system, BlinkMacSystemFont, \"Segoe UI\", Roboto, \"Helvetica Neue\", Arial, sans-serif, \"Apple Color Emoji\", \"Segoe UI Emoji\", \"Segoe UI Symbol\"; font-optical-sizing: inherit; font-size-adjust: inherit; font-kerning: inherit; font-feature-settings: inherit; font-variation-settings: inherit; margin: 0px; padding: 0px; vertical-align: baseline; list-style: inside disc; color: rgb(33, 37, 41); letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: rgb(255, 255, 255); text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;'\u003e\n\u003cli style=\"box-sizing: border-box; border: 0px; font: inherit; margin: 15px 0px; padding: 0px; vertical-align: baseline; display: list-item; list-style-type: disc;\"\u003eMainsheet and spinnaker sheet turning blocks on dinghies to 4m (13ft).\u003c\/li\u003e\n\u003cli style=\"box-sizing: border-box; border: 0px; font: inherit; margin: 15px 0px; padding: 0px; vertical-align: baseline; display: list-item; list-style-type: disc;\"\u003eControl lines.\u003c\/li\u003e\n\u003cli style=\"box-sizing: border-box; border: 0px; font: inherit; margin: 15px 0px; padding: 0px; vertical-align: baseline; display: list-item; list-style-type: disc;\"\u003eCascading vangs.\u003c\/li\u003e\n\u003cli style=\"box-sizing: border-box; border: 0px; font: inherit; margin: 15px 0px; padding: 0px; vertical-align: baseline; display: list-item; list-style-type: disc;\"\u003eLeech lines  cunninghams.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eMaterials:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFrame\/cheeks: Toughened, glass fibre reinforced nylon. \u003c\/li\u003e\n\u003cli\u003eHHL Sheave and bearing race: Grade 2205 stainless steel with Grade 304 stainless steel ball bearings.\u003c\/li\u003e\n\u003c\/ul\u003e \u003c!--- cis2:m2lumZRk ---\u003e\n\u003cp\u003eThe Ronstan Series 25 Ball Bearing HHL Lashing Orbit Block RF28109HL is engineered for demanding high-performance sailing and rigging systems. Its compact 25mm size makes it ideal for control lines such as mainsheet and spinnaker sheet turning blocks on dinghies up to 13 feet, providing exceptional strength-to-weight ratio and durability. Featuring a two-stage ball bearing system with high compression strength acetal bearings, this block ensures smooth operation and reliable performance under high loads. Its lightweight design, weighing approximately 1.2 ounces, minimizes weight aloft while maintaining robust handling capabilities. The stainless steel hub accommodates lashing attachments up to 5\/32 inch, offering versatility for various rigging configurations. The inclusion of a becket hub allows for convenient through-sheave take-off, simplifying setup and adjustments. The HHL variant is equipped with a Grade 2205 stainless steel sheave and bearing race, paired with Grade 304 stainless steel ball bearings, making it suitable for high-load applications such as foiling and modern performance boats using small-diameter lines to carry significant loads. Built with toughened, glass fiber reinforced nylon frames, these blocks resist impact and wear, ensuring long-term durability even in harsh marine environments. Whether used for control lines, cascading vangs, or cunninghams, the Ronstan RF28109HL provides a reliable, lightweight, and high-strength solution for competitive sailing and performance-focused applications. Its compact size and advanced materials make it an excellent choice for sailors seeking efficiency and durability in their rigging components.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eTwo-stage ball bearing system for smooth operation under load\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eSuitable for lines up to 5\/16 inch (8mm) diameter\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eHollow hub design allows for becket take-off\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eLashing blocks support up to 4mm (5\/32 inch) lashing for versatile rigging\u003c\/li\u003e\u003c\/ul\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":44431323594794,"sku":"110655","price":90.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0692\/2285\/8794\/files\/110655XL.jpg?v=1780864625","url":"https:\/\/atticusgoods.com\/products\/ronstan-series-25-ball-bearing-hhl-lashing-orbit-block-rf28109hl-for-high-load-sailing-applications","provider":"Atticus Goods","version":"1.0","type":"link"}