{"product_id":"riayer-ball-bearing-single-pulley-block-35mm-50mm","title":"RiaYer Ball Bearing Single Pulley Block with Lockable Swivel \u0026 Becket","description":"\u003ch3 class=\"ng-star-inserted\"\u003e\u003cstrong class=\"ng-star-inserted\"\u003e\u003cspan class=\"ng-star-inserted\"\u003eHigh-Performance Ball Bearing Single Block Pulley with Lockable Swivel \u0026amp; Becket\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp class=\"ng-star-inserted\"\u003e\u003cspan class=\"ng-star-inserted\"\u003eEngineered for professional marine rigging and demanding outdoor applications, the RiaYer Ball Bearing Single Block Pulley delivers unmatched smooth rolling efficiency and rapid line response. Available in\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cstrong class=\"ng-star-inserted\"\u003e\u003cspan class=\"ng-star-inserted\"\u003e35mm\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"ng-star-inserted\"\u003e\u003cspan\u003e \u003c\/span\u003eand\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cstrong class=\"ng-star-inserted\"\u003e\u003cspan class=\"ng-star-inserted\"\u003e50mm\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"ng-star-inserted\"\u003e\u003cspan\u003e \u003c\/span\u003esheave sizes, this block is the ultimate upgrade for sailboat mainsheets, control lines, and heavy-duty shade sail tensioning.\u003c\/span\u003e\u003c\/p\u003e\n\u003chr class=\"ng-star-inserted\"\u003e\n\u003ch3 class=\"ng-star-inserted\"\u003e\u003cstrong class=\"ng-star-inserted\"\u003e\u003cspan class=\"ng-star-inserted\"\u003eKey Product Highlights:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul class=\"ng-star-inserted\"\u003e\n\u003cli class=\"ng-star-inserted\"\u003e\n\u003cp class=\"ng-star-inserted\"\u003e\u003cstrong class=\"ng-star-inserted\"\u003e\u003cspan class=\"ng-star-inserted\"\u003eAdvanced Low-Friction Mechanics:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"ng-star-inserted\"\u003e\u003cspan\u003e \u003c\/span\u003eUnlike standard plain bearing pulleys, this block features high-strength polymer ball bearings. It converts sliding friction into rolling efficiency, ensuring your ropes glide smoothly without jamming, even under high dynamic loads.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"ng-star-inserted\"\u003e\n\u003cp class=\"ng-star-inserted\"\u003e\u003cstrong class=\"ng-star-inserted\"\u003e\u003cspan class=\"ng-star-inserted\"\u003eMarine-Grade 316 Stainless Steel Skeleton:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"ng-star-inserted\"\u003e\u003cspan\u003e \u003c\/span\u003eThe load-bearing axis, top D-shackle, and becket pin are forged entirely from marine-grade 316 stainless steel, offering maximum resistance against rust, saltwater, and harsh ocean environments.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"ng-star-inserted\"\u003e\n\u003cp class=\"ng-star-inserted\"\u003e\u003cstrong class=\"ng-star-inserted\"\u003e\u003cspan class=\"ng-star-inserted\"\u003eUltra-Lightweight \u0026amp; Rugged Shell:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"ng-star-inserted\"\u003e\u003cspan\u003e \u003c\/span\u003eThe hollow-carved sideplates are injection-molded from UV-stabilized PA66 nylon with fiberglass reinforcement. This design achieves an incredible strength-to-weight ratio while preventing UV degradation.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"ng-star-inserted\"\u003e\n\u003cp class=\"ng-star-inserted\"\u003e\u003cstrong class=\"ng-star-inserted\"\u003e\u003cspan class=\"ng-star-inserted\"\u003e360° Lockable Swivel Head:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"ng-star-inserted\"\u003e\u003cspan\u003e \u003c\/span\u003eThe top shackle rotates freely to prevent line twists, or it can be locked securely at a fixed angle (0° or 90°) using the integrated set screw for rigid, precise alignment.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"ng-star-inserted\"\u003e\n\u003cp class=\"ng-star-inserted\"\u003e\u003cstrong class=\"ng-star-inserted\"\u003e\u003cspan class=\"ng-star-inserted\"\u003eIntegrated Anchor Becket:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"ng-star-inserted\"\u003e\u003cspan\u003e \u003c\/span\u003eThe built-in hollow bottom becket allows you to easily dead-end a rope, which is essential for building 2:1, 3:1, or 4:1 block and tackle mechanical advantage systems.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr class=\"ng-star-inserted\"\u003e\n\u003ch3 class=\"ng-star-inserted\"\u003e\u003cstrong class=\"ng-star-inserted\"\u003e\u003cspan class=\"ng-star-inserted\"\u003eSpecifications \u0026amp; Size Comparison:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cdiv class=\"table-container ng-star-inserted\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr class=\"table-header ng-star-inserted\"\u003e\n\u003ctd class=\"ng-star-inserted\"\u003e\u003cspan class=\"ng-star-inserted\"\u003eFeature \/ Spec\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd class=\"ng-star-inserted\"\u003e\n\u003cstrong class=\"ng-star-inserted\"\u003e\u003cspan class=\"ng-star-inserted\"\u003e35mm Model\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"ng-star-inserted\"\u003e\u003cspan\u003e \u003c\/span\u003e(Compact \u0026amp; Precise)\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd class=\"ng-star-inserted\"\u003e\n\u003cstrong class=\"ng-star-inserted\"\u003e\u003cspan class=\"ng-star-inserted\"\u003e50mm Model\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"ng-star-inserted\"\u003e\u003cspan\u003e \u003c\/span\u003e(Heavy-Duty \u0026amp; Rapid)\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"ng-star-inserted\"\u003e\n\u003ctd class=\"ng-star-inserted\"\u003e\u003cstrong class=\"ng-star-inserted\"\u003e\u003cspan class=\"ng-star-inserted\"\u003eSheave Diameter\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"ng-star-inserted\"\u003e\u003cspan class=\"ng-star-inserted\"\u003e35mm (1-3\/8\")\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd class=\"ng-star-inserted\"\u003e\u003cspan class=\"ng-star-inserted\"\u003e50mm (2\")\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"ng-star-inserted\"\u003e\n\u003ctd class=\"ng-star-inserted\"\u003e\u003cstrong class=\"ng-star-inserted\"\u003e\u003cspan class=\"ng-star-inserted\"\u003eMax Line\/Rope Size\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"ng-star-inserted\"\u003e\n\u003cspan class=\"ng-star-inserted\"\u003eUp to\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cstrong class=\"ng-star-inserted\"\u003e\u003cspan class=\"ng-star-inserted\"\u003e8mm (5\/16\")\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003ctd class=\"ng-star-inserted\"\u003e\n\u003cspan class=\"ng-star-inserted\"\u003eUp to\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cstrong class=\"ng-star-inserted\"\u003e\u003cspan class=\"ng-star-inserted\"\u003e10mm (3\/8\")\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"ng-star-inserted\"\u003e\n\u003ctd class=\"ng-star-inserted\"\u003e\u003cstrong class=\"ng-star-inserted\"\u003e\u003cspan class=\"ng-star-inserted\"\u003eMaximum Working Load (MWL)\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"ng-star-inserted\"\u003e\u003cstrong class=\"ng-star-inserted\"\u003e\u003cspan class=\"ng-star-inserted\"\u003e250 kg (550 lbs)\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"ng-star-inserted\"\u003e\u003cstrong class=\"ng-star-inserted\"\u003e\u003cspan class=\"ng-star-inserted\"\u003e450 kg (1000 lbs)\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"ng-star-inserted\"\u003e\n\u003ctd class=\"ng-star-inserted\"\u003e\u003cstrong class=\"ng-star-inserted\"\u003e\u003cspan class=\"ng-star-inserted\"\u003eBreaking Load\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"ng-star-inserted\"\u003e\u003cstrong class=\"ng-star-inserted\"\u003e\u003cspan class=\"ng-star-inserted\"\u003e600 kg (1320 lbs)\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"ng-star-inserted\"\u003e\u003cstrong class=\"ng-star-inserted\"\u003e\u003cspan class=\"ng-star-inserted\"\u003e1000 kg (2200 lbs)\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"ng-star-inserted\"\u003e\n\u003ctd class=\"ng-star-inserted\"\u003e\u003cstrong class=\"ng-star-inserted\"\u003e\u003cspan class=\"ng-star-inserted\"\u003ePrimary Applications\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"ng-star-inserted\"\u003e\u003cspan class=\"ng-star-inserted\"\u003eDinghies, kayak trolleys, lightweight rigging, camping canopies.\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd class=\"ng-star-inserted\"\u003e\u003cspan class=\"ng-star-inserted\"\u003eSailboat mainsheets, halyard tuning, heavy-duty shade sails, rescue rigging.\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003chr class=\"ng-star-inserted\"\u003e\n\u003ch3 class=\"ng-star-inserted\"\u003e\u003cstrong class=\"ng-star-inserted\"\u003e\u003cspan class=\"ng-star-inserted\"\u003eVersatile Applications By Size:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ch4 class=\"ng-star-inserted\"\u003e\u003cstrong class=\"ng-star-inserted\"\u003e\u003cspan class=\"ng-star-inserted\"\u003eChoose 35mm for:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul class=\"ng-star-inserted\"\u003e\n\u003cli class=\"ng-star-inserted\"\u003e\n\u003cp class=\"ng-star-inserted\"\u003e\u003cspan class=\"ng-star-inserted\"\u003eSailboat boom vangs and small dinghy control lines.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"ng-star-inserted\"\u003e\n\u003cp class=\"ng-star-inserted\"\u003e\u003cspan class=\"ng-star-inserted\"\u003eKayak anchor trolley systems and marine rudder controls.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"ng-star-inserted\"\u003e\n\u003cp class=\"ng-star-inserted\"\u003e\u003cspan class=\"ng-star-inserted\"\u003eHammock suspensions and lightweight camping canopy tensioning.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 class=\"ng-star-inserted\"\u003e\u003cstrong class=\"ng-star-inserted\"\u003e\u003cspan class=\"ng-star-inserted\"\u003eChoose 50mm for:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul class=\"ng-star-inserted\"\u003e\n\u003cli class=\"ng-star-inserted\"\u003e\n\u003cp class=\"ng-star-inserted\"\u003e\u003cspan class=\"ng-star-inserted\"\u003eSailboat mainsheets, halyards, and spinnaker systems.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"ng-star-inserted\"\u003e\n\u003cp class=\"ng-star-inserted\"\u003e\u003cspan class=\"ng-star-inserted\"\u003eHeavy-duty tensioning for outdoor shade sails and patio awnings.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"ng-star-inserted\"\u003e\n\u003cp class=\"ng-star-inserted\"\u003e\u003cspan class=\"ng-star-inserted\"\u003eArborist rigging, rescue hauling systems, and workshop block-and-tackle.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr class=\"ng-star-inserted\"\u003e\n\u003ch3 class=\"ng-star-inserted\"\u003e\u003cstrong class=\"ng-star-inserted\"\u003e\u003cspan class=\"ng-star-inserted\"\u003eMaintenance Tip for Peak Performance:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp class=\"ng-star-inserted\"\u003e\u003cspan class=\"ng-star-inserted\"\u003eTo ensure the longevity of the high-speed polymer bearings, simply flush the block with fresh water after exposure to saltwater, dirt, or marine debris.\u003c\/span\u003e\u003c\/p\u003e","brand":"RiaYer","offers":[{"title":"35mm \/ 1","offer_id":48960055607546,"sku":null,"price":21.99,"currency_code":"USD","in_stock":true},{"title":"35mm \/ 2","offer_id":48960055640314,"sku":null,"price":43.99,"currency_code":"USD","in_stock":true},{"title":"35mm \/ 4","offer_id":48960055673082,"sku":null,"price":84.99,"currency_code":"USD","in_stock":true},{"title":"35mm \/ 6","offer_id":48960055705850,"sku":null,"price":124.99,"currency_code":"USD","in_stock":true},{"title":"50mm \/ 1","offer_id":48960055738618,"sku":null,"price":25.99,"currency_code":"USD","in_stock":true},{"title":"50mm \/ 2","offer_id":48960055771386,"sku":null,"price":50.99,"currency_code":"USD","in_stock":true},{"title":"50mm \/ 4","offer_id":48960055804154,"sku":null,"price":99.99,"currency_code":"USD","in_stock":true},{"title":"50mm \/ 6","offer_id":48960055836922,"sku":null,"price":146.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0799\/9701\/0170\/files\/35mm_734a5446-ebdf-419d-8d4c-0c7cb68edc01.jpg?v=1780468831","url":"https:\/\/riayer.com\/products\/riayer-ball-bearing-single-pulley-block-35mm-50mm","provider":"RiaYer","version":"1.0","type":"link"}