{"product_id":"ronstan-series-25-ball-bearing-orbit-block-lashing-for-dinghies-small-boats","title":"Ronstan Series 25 Ball Bearing Orbit Block - Lashing for Dinghies \u0026 Small Boats","description":"\u003cp\u003e\u003cstrong\u003eSeries 25 Ball Bearing Orbit Block - Lashing\u003c\/strong\u003e\u003c\/p\u003e\u003cp id=\"isPasted\"\u003eSingle sheave ball bearing block with becket 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\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli id=\"isPasted\"\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 id=\"isPasted\"\u003eMax. Rope diameter (in): 5\/16\u003c\/li\u003e\n\u003cli\u003eSheave diameter (in): 1\u003c\/li\u003e\n\u003cli\u003eB.L. (lb): 1650\u003c\/li\u003e\n\u003cli\u003eWeight (oz): 0.5\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  cunninghams.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eMaterials:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli id=\"isPasted\"\u003eBB Sheave and balls: High compression strength acetal.\u003c\/li\u003e\n\u003cli\u003eFrame\/cheeks: Toughened, glass-fiber-reinforced nylon.\u003c\/li\u003e\n\u003c\/ul\u003e \u003c!--- cis2:m2lumZRk ---\u003e\n\u003cp\u003eThe Ronstan Series 25 Ball Bearing Orbit Block with lashing head is designed for high-performance sailing applications, combining durability and lightweight construction. Featuring a single sheave with a becket and a stainless steel hub, this compact 25mm block is ideal for controlling lines on dinghies up to 13 feet long. Its high compression strength acetal bearing system ensures smooth operation under demanding conditions while maintaining a low weight, making it an excellent choice for competitive sailors seeking reliable control line management. The orbit block's lashing capability accommodates up to 4mm (5\/32 inch) lashing, providing versatility in rigging setups and allowing for secure attachment to various points on the boat. Its robust construction and precision engineering ensure consistently reliable performance in high-stress environments, whether used for mainsheet, spinnaker sheet turning, or control lines such as vang and cunninghams. The hollow hub design facilitates easy becket take-off, simplifying line routing and adjustment. Crafted with a toughened, glass-fiber-reinforced nylon frame and high compression strength acetal sheave and balls, this orbit block offers the perfect balance of strength and weight savings. Overall, the Ronstan Series 25 Ball Bearing Orbit Block is an essential component for sailors who demand efficiency, durability, and performance from their control line hardware. Its compact size and versatile features make it suitable for a wide range of rigging configurations on small racing dinghies, ensuring optimal line control and ease of handling during high-speed maneuvers and challenging conditions.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003e2-stage ball bearing system for smooth operation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eSuitable for up to 8mm (5\/16 inch) lines\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":44431323725866,"sku":"110654","price":16.35,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0692\/2285\/8794\/files\/110654XL.jpg?v=1780864701","url":"https:\/\/atticusgoods.com\/products\/ronstan-series-25-ball-bearing-orbit-block-lashing-for-dinghies-small-boats","provider":"Atticus Goods","version":"1.0","type":"link"}