{"product_id":"lovejoy-69790400090-rigid-coupling-hub-5-5-in-carbon-steel","title":"Lovejoy 69790400090 Rigid Coupling Hub 5.5 in Carbon Steel","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe LOVEJOY 69790400090 is a rigid coupling hub designed to create a solid, zero-backlash mechanical connection between two shafts in power transmission applications. Manufactured from carbon steel, it offers the durability and torsional rigidity required in demanding industrial and commercial drive systems. With a 5.5-inch outside diameter, this hub is sized for medium-to-large shaft coupling assemblies. Rigid coupling hubs of this type are typically installed by millwrights, industrial mechanics, and maintenance technicians working on pumps, compressors, fans, and similar rotating equipment. The part weighs 6.9 pounds.\u003c\/p\u003e\n\u003cp\u003eThis hub is suited for use in industrial machinery, HVAC drive trains, pump systems, and other rotating equipment where precise shaft alignment can be achieved and maintained. Rigid couplings are preferred in applications where shaft misalignment is not a factor and maximum torque transmission is required. The carbon steel construction makes this hub appropriate for standard industrial environments where corrosion resistance is not a primary concern. Installation is performed during initial equipment assembly or as part of a scheduled drivetrain rebuild.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e5.5-inch outside diameter suits medium-to-large coupling assemblies\u003c\/li\u003e\n  \u003cli\u003eCarbon steel construction provides high torsional strength and durability\u003c\/li\u003e\n  \u003cli\u003eRigid design delivers zero-backlash shaft-to-shaft power transmission\u003c\/li\u003e\n  \u003cli\u003eCompatible with standard LOVEJOY rigid coupling systems\u003c\/li\u003e\n  \u003cli\u003eSingle-piece hub construction for straightforward installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style rigid coupling hub for use in standard power transmission coupling assemblies requiring a 5.5-inch outside diameter hub.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation of rigid coupling hubs should be performed by a qualified millwright or industrial mechanic. Ensure all connected equipment is fully de-energized and locked out per LOTO procedures before beginning work. Shaft alignment must be verified to within acceptable tolerances before final assembly, as rigid couplings do not accommodate misalignment. Use appropriate press or puller tooling when seating or removing the hub to avoid damage to shaft surfaces or bore finishes.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutside Diameter\u003c\/strong\u003e: 5.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Carbon Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 6.9 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: 69790400090\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"LOVEJOY","offers":[{"title":"Default Title","offer_id":51543571988786,"sku":"69790400090","price":465.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/300e7b14835d274071199df2e8b70e8a_00e74f75-f37b-4109-b3d1-2a59f664e876.jpg?v=1785920501","url":"https:\/\/voomisupply.com\/products\/lovejoy-69790400090-rigid-coupling-hub-5-5-in-carbon-steel","provider":"Voomi Supply","version":"1.0","type":"link"}