{"product_id":"lovejoy-68514436122-flexible-coupling-hub-1-1-8-in-bore","title":"Lovejoy 68514436122 Flexible Coupling Hub 1-1\/8 in Bore","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe LOVEJOY 68514436122 is a cast iron flexible coupling hub designed to connect rotating shafts in mechanical drive systems. It accepts a maximum bore diameter of 1-1\/8 inches and is machined with a 1\/4 inch by 1\/8 inch keyway to secure the hub to a keyed shaft. The hub measures 4-5\/8 inches in outer diameter and 3.94 inches overall length, making it a mid-frame coupling component suited for industrial pumps, fans, compressors, and HVAC drive assemblies. Rated to a maximum of 5850 RPM, it handles moderate-to-high-speed shaft connections. Licensed mechanics, millwrights, and HVAC technicians typically specify this hub where shaft misalignment compensation is required alongside positive torque transmission.\u003c\/p\u003e\n\u003cp\u003eThis flexible coupling hub is used in a wide range of mechanical and HVAC applications including pump drives, blower assemblies, and compressor hookups in both light industrial and commercial settings. The size 7S coupling designation places it in a well-established coupling series, making it a straightforward drop-in for new installations and replacement jobs. It is particularly relevant to commercial HVAC and refrigeration systems where motor-to-pump or motor-to-blower shaft connections require a flexible element to absorb vibration and minor angular or parallel misalignment.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eMaximum bore diameter of 1-1\/8 inches for versatile shaft fitment\u003c\/li\u003e\n  \u003cli\u003e1\/4 inch by 1\/8 inch keyway provides positive rotational engagement\u003c\/li\u003e\n  \u003cli\u003e4-5\/8 inch outer diameter for size 7S coupling series applications\u003c\/li\u003e\n  \u003cli\u003eRated to 5850 RPM for moderate-to-high-speed drive systems\u003c\/li\u003e\n  \u003cli\u003eCast iron construction for durability in industrial and HVAC environments\u003c\/li\u003e\n  \u003cli\u003e3.94 inch overall length suits standard mid-frame coupling assemblies\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or new-installation hub for size 7S flexible coupling assemblies in HVAC, pump, blower, and light industrial drive applications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a qualified millwright, mechanic, or HVAC technician. Disconnect and lock out all power to the drive system before handling any coupling components. Ensure the mating shaft is clean, burr-free, and within the specified bore tolerance before pressing the hub into position. Verify coupling element alignment after installation to prevent premature wear on the flexible insert.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Bore Diameter\u003c\/strong\u003e: 1-1\/8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eKeyway Width x Depth\u003c\/strong\u003e: 1\/4 inches x 1\/8 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\u003c\/strong\u003e: 3.94 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum RPM\u003c\/strong\u003e: 5850 RPM\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoupling Size Code\u003c\/strong\u003e: 7S\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: 2.75 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: 68514436122\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"LOVEJOY","offers":[{"title":"Default Title","offer_id":51539145982258,"sku":"68514436122","price":81.42,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/ce263d1e991dfb2cb4d450b43cae55ac.jpg?v=1785835402","url":"https:\/\/voomisupply.com\/products\/lovejoy-68514436122-flexible-coupling-hub-1-1-8-in-bore","provider":"Voomi Supply","version":"1.0","type":"link"}