{"product_id":"lovejoy-68514436126-flexible-coupling-hub-1-3-8-in-bore","title":"Lovejoy 68514436126 Flexible Coupling Hub 1-3\/8 in Bore","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe LOVEJOY 68514436126 is a flexible coupling hub designed for power transmission applications in mechanical and industrial drive systems. This cast iron hub accepts a maximum bore diameter of 1-3\/8 inches and features a 5\/16 inch wide by 5\/32 inch deep keyway for positive shaft engagement. With a 4-5\/8 inch outer diameter and an overall length of 3.94 inches, it is sized for mid-range shaft coupling assemblies. Rated to a maximum of 5,850 RPM, it suits moderate- to high-speed drive configurations. Installation is typically performed by mechanical contractors, millwrights, or HVAC equipment technicians working on motor-to-load connections.\u003c\/p\u003e\n\u003cp\u003eThis coupling hub is used in flexible jaw-style or jaw-and-spider coupling assemblies commonly found in commercial HVAC equipment, pumps, compressors, and general power transmission setups. It pairs with a mating hub and a flexible elastomeric spider insert to transmit torque while accommodating minor shaft misalignment. The cast iron construction holds up in demanding mechanical environments where vibration and repetitive loading are present.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eMaximum bore diameter of 1-3\/8 inches for shaft engagement\u003c\/li\u003e\n  \u003cli\u003eKeyway dimensions of 5\/16 inch wide by 5\/32 inch deep for positive drive retention\u003c\/li\u003e\n  \u003cli\u003e4-5\/8 inch outer diameter suits mid-range coupling assemblies\u003c\/li\u003e\n  \u003cli\u003eOverall length of 3.94 inches\u003c\/li\u003e\n  \u003cli\u003eCast iron construction for durability in industrial and mechanical environments\u003c\/li\u003e\n  \u003cli\u003eRated to 5,850 RPM maximum speed\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or serviceable component for flexible jaw coupling assemblies using a Size 7S coupling designation.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by qualified millwrights or mechanical technicians. Disconnect and lock out all power to the drive system before removing or installing any coupling component. Verify that bore diameter, keyway dimensions, and coupling size code match both the shaft and the mating hub before pressing or fitting the hub onto the shaft. Torque all fasteners per the equipment manufacturer specifications and confirm shaft alignment before returning the drive system to service.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Bore Diameter\u003c\/strong\u003e: 1-3\/8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eKeyway Width x Depth\u003c\/strong\u003e: 5\/16 inches x 5\/32 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOuter Diameter\u003c\/strong\u003e: 4-5\/8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length (OAL)\u003c\/strong\u003e: 3.94 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum RPM\u003c\/strong\u003e: 5,850 RPM\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Cast Iron\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoupling Size Code\u003c\/strong\u003e: 7S\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 2.64 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: LOVEJOY\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 68514436126\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"LOVEJOY","offers":[{"title":"Default Title","offer_id":51541179695410,"sku":"68514436126","price":81.42,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/a9cbb4a06a7c7cb241cba57ec44196d0_f3799615-8f3d-4b8c-aa4d-f032286a7826.jpg?v=1785869541","url":"https:\/\/voomisupply.com\/products\/lovejoy-68514436126-flexible-coupling-hub-1-3-8-in-bore","provider":"Voomi Supply","version":"1.0","type":"link"}