{"product_id":"ronstan-series-40-ball-bearing-block-single-upright-lead","title":"Ronstan Series 40 Ball Bearing Block - Single Upright Lead","description":"\u003cp\u003e\u003cstrong\u003eSeries 40 Ball Bearing Block - Single Upright Lead\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eLead blocks are a low profile solution for leading halyards or other rig sail controls back to cleats or jammers. Precision molded Acetal sheaves running on Acetal or Torlon ball bearings provide high performance  low friction. The 2-stage ball bearing system provides consistent performance over the full load range.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eApplications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eTypically used for halyards at the mast base.\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eMaterials:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eAcetal ball bearings\u003c\/li\u003e\n\u003cli\u003eUV stabilized Acetal sheave\u003c\/li\u003e\n\u003cli\u003eGrade 316 stainless steel load housing\u003c\/li\u003e\n\u003c\/ul\u003e \u003c!--- cis2:m2lumZRk ---\u003e\n\u003cp\u003eThe Ronstan Series 40 Ball Bearing Block - Single Upright Lead is a high-performance solution designed for leading halyards or other rig sail controls back to cleats or jammers on sailboats. Its low profile construction makes it ideal for applications where space is limited, providing reliable and smooth operation under various load conditions. The block features precision molded Acetal sheaves that run on high-quality Acetal or Torlon ball bearings, ensuring low friction and efficient movement. The innovative 2-stage ball bearing system maintains consistent performance across the full load range, reducing wear and extending service life. Made with durable materials, the load housing is constructed from corrosion-resistant Grade 316 stainless steel, and the UV stabilized Acetal sheave ensures longevity even in harsh marine environments. This combination of materials and engineering makes the Ronstan Series 40 an excellent choice for mast base halyard applications and other rigging needs. Easy to install and maintain, this ball bearing block provides smooth operation and dependable performance, making it a reliable component for serious sailors seeking durability and efficiency in their rigging hardware.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eLow profile design ideal for space-constrained applications\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003ePrecision molded Acetal sheaves for smooth operation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eBall bearings made from Acetal or Torlon for low friction\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003e2-stage ball bearing system for consistent performance over load range\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eConstructed from Grade 316 stainless steel for corrosion resistance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eUV stabilized Acetal sheave for durability in harsh environments\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eSuitable for halyards at the mast base and similar rigging applications\u003c\/li\u003e\u003c\/ul\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":44530312642602,"sku":"70615","price":56.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0692\/2285\/8794\/files\/70615XL.jpg?v=1783116362","url":"https:\/\/atticusgoods.com\/products\/ronstan-series-40-ball-bearing-block-single-upright-lead","provider":"Atticus Goods","version":"1.0","type":"link"}