{"product_id":"ronstan-series-25-ball-bearing-hhl-lashing-orbit-block-110655","title":"Ronstan Series 25 Ball Bearing HHL Lashing Orbit Block™ MPN - RF28109HL","description":"\u003cp\u003e\u003cstrong\u003eSeries 25 Ball Bearing HHL Lashing Orbit Block™\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eSingle sheave ball bearing high load block with becket hub option and lashing head.\u003c\/p\u003e\u003cp\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 Ronstan’s 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\u003e\n\u003cli\u003eMax. Rope diameter (in): 5\/16\u003c\/li\u003e\n\u003cli\u003eM.W.L. (lb): 880\u003c\/li\u003e\n\u003cli\u003eSheave diameter (in): 1\u003c\/li\u003e\n\u003cli\u003eB.L. (lb): 2650\u003c\/li\u003e\n\u003cli\u003eWeight (oz): 1.2\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eApplications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eMainsheet and spinnaker sheet turning blocks on dinghies to 4m (13ft). \u003c\/li\u003e\n\u003cli\u003eControl lines.\u003c\/li\u003e\n\u003cli\u003eCascading vangs.\u003c\/li\u003e\n\u003cli\u003eLeech lines \u0026amp; 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","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":47479925244066,"sku":"110655","price":107.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/3170\/5250\/files\/110655XL.jpg?v=1785233102","url":"https:\/\/marinerswarehouse.com\/products\/ronstan-series-25-ball-bearing-hhl-lashing-orbit-block-110655","provider":"Mariners Warehouse Shop","version":"1.0","type":"link"}