{"product_id":"lovejoy-68514436140-flexible-coupling-hub-1-375in-bore","title":"Lovejoy 68514436140 Flexible Coupling Hub 1.375in Bore","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe LOVEJOY 68514436140 is a flexible coupling hub designed for mechanical power transmission in industrial and commercial drive systems. With a maximum bore diameter of 1.375 inches and a 5\/16 inch by 5\/32 inch keyway, this hub accepts a keyed shaft for positive torque transfer. The overall diameter measures 5.45 inches and the overall length is 4.44 inches. Constructed from cast iron, it delivers the rigidity and wear resistance required in demanding rotating-equipment applications. This hub is sized to the 8S coupling series and is rated to 4500 RPM. Installation is typically performed by millwrights, industrial mechanics, or HVAC equipment technicians working on belt or direct-drive systems.\u003c\/p\u003e\n\u003cp\u003eThis flexible coupling hub is suited for use in pumps, fans, compressors, and similar rotating equipment where shaft misalignment must be accommodated and vibration damping is required. The cast iron construction makes it appropriate for moderate-duty industrial environments. It pairs with a mating hub and a flexible insert element to complete the coupling assembly. Verify shaft diameter, keyway dimensions, and coupling size code against the driven and driving equipment before installation.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e1.375 inch maximum bore diameter accepts a wide range of shaft sizes up to that dimension\u003c\/li\u003e\n  \u003cli\u003e5\/16 inch wide by 5\/32 inch deep keyway for positive shaft engagement and torque transmission\u003c\/li\u003e\n  \u003cli\u003e5.45 inch outer diameter and 4.44 inch overall length for the 8S coupling size family\u003c\/li\u003e\n  \u003cli\u003eRated to 4500 RPM for compatibility with standard motor and pump speeds\u003c\/li\u003e\n  \u003cli\u003eCast iron construction provides strength and dimensional stability under load\u003c\/li\u003e\n  \u003cli\u003ePart of a three-piece flexible coupling system requiring a mating hub and spider insert\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or new-installation flexible coupling hub for rotating equipment applications using the 8S coupling size code. Confirm bore diameter, keyway dimensions, and coupling series with the application before ordering.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eDe-energize and lock out all power to the drive system before beginning coupling installation or removal. A qualified millwright or mechanical technician should perform the work, using appropriate bore and keyway measurement tools to confirm fit before pressing or securing the hub to the shaft. Do not hammer directly on the hub face; use a hub puller or press as appropriate to avoid damage to the bore or keyway. Verify coupling alignment after installation per the equipment manufacturer's specifications.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Bore Diameter\u003c\/strong\u003e: 1.375 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: 5.45 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 4.44 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum RPM\u003c\/strong\u003e: 4500 RPM\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoupling Size Code\u003c\/strong\u003e: 8S\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Cast Iron\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 4.48 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: 68514436140\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"LOVEJOY","offers":[{"title":"Default Title","offer_id":51543505535282,"sku":"68514436140","price":104.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6c410f6c908a40b64c2af2e9c9394f6d.jpg?v=1785919616","url":"https:\/\/voomisupply.com\/products\/lovejoy-68514436140-flexible-coupling-hub-1-375in-bore","provider":"Voomi Supply","version":"1.0","type":"link"}