{"product_id":"1-2-inch-bore-steel-fan-blade-hub","title":"1\/2\" Bore Steel Fan Blade Hub – Commercial Refrigeration","description":"\u003ch2\u003e1\/2\" Bore Steel Fan Blade Hub for Commercial Refrigeration Fan Assemblies\u003c\/h2\u003e\n\n\u003cp\u003eThis \u003cstrong\u003e1\/2-inch bore steel fan blade hub\u003c\/strong\u003e is a replacement mounting component designed for compatible commercial refrigeration and cooling-system fan assemblies. The hub provides the connection point between the applicable fan blade and a \u003cstrong\u003e1\/2\" motor shaft\u003c\/strong\u003e, helping secure the blade so rotational force can be transferred from the motor to the fan.\u003c\/p\u003e\n\n\u003cp\u003eCorrect hub selection is important to safe, reliable fan operation. A hub with the wrong shaft bore, blade mounting pattern, offset, or hardware arrangement can cause blade wobble, vibration, slipping, improper alignment, or damage to the fan motor and surrounding components.\u003c\/p\u003e\n\n\u003cp\u003eBefore ordering, compare the original hub carefully and verify the \u003cstrong\u003e1\/2\" shaft bore\u003c\/strong\u003e, blade mounting pattern, hub dimensions, shaft engagement, and required fan-blade configuration.\u003c\/p\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Type:\u003c\/strong\u003e Fan Blade Steel Hub\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShaft Bore:\u003c\/strong\u003e 1\/2\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Steel Hub Assembly\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Commercial Refrigeration \/ Cooling Fan Assemblies\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Fan Blade to Motor Shaft Mounting\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat a Fan Blade Hub Does\u003c\/h2\u003e\n\n\u003cp\u003eThe fan blade hub connects the fan blade to the applicable motor shaft. As the motor rotates, the hub transfers that motion to the blade so airflow can be produced through the refrigeration or cooling system.\u003c\/p\u003e\n\n\u003cp\u003eA properly matched hub helps support:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eSecure fan-blade mounting\u003c\/li\u003e\n\u003cli\u003eCorrect blade alignment\u003c\/li\u003e\n\u003cli\u003eConsistent transfer of motor rotation\u003c\/li\u003e\n\u003cli\u003eReduced blade wobble\u003c\/li\u003e\n\u003cli\u003eReduced vibration\u003c\/li\u003e\n\u003cli\u003eProper shaft engagement\u003c\/li\u003e\n\u003cli\u003eDependable refrigeration airflow\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e1\/2-Inch Shaft Bore\u003c\/h2\u003e\n\n\u003cp\u003eThis hub is identified with a \u003cstrong\u003e1\/2-inch bore\u003c\/strong\u003e for the applicable motor shaft. Shaft diameter is one of the most important fitment measurements when selecting a replacement fan hub.\u003c\/p\u003e\n\n\u003cp\u003eDo not force an incorrectly sized hub onto a motor shaft. A bore that is too large can allow excessive play or slipping, while a bore that is too small will not mount correctly and can damage the hub or shaft.\u003c\/p\u003e\n\n\u003ch2\u003eSteel Fan Hub Construction\u003c\/h2\u003e\n\n\u003cp\u003eThe hub uses a steel mounting structure intended to provide a rigid connection between the fan blade and motor shaft. The original hub design should still be matched for bore size, mounting-hole pattern, offset, blade attachment, and shaft-locking arrangement.\u003c\/p\u003e\n\n\u003ch2\u003eCommon Signs of a Damaged Fan Blade Hub\u003c\/h2\u003e\n\n\u003cp\u003eQualified commercial refrigeration technicians may inspect the hub when troubleshooting conditions such as:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eFan blade wobbles during operation\u003c\/li\u003e\n\u003cli\u003eBlade slips on the motor shaft\u003c\/li\u003e\n\u003cli\u003eFan produces excessive vibration\u003c\/li\u003e\n\u003cli\u003eAbnormal rattling or mechanical noise\u003c\/li\u003e\n\u003cli\u003eHub is visibly cracked, bent, or distorted\u003c\/li\u003e\n\u003cli\u003eBlade mounting screws repeatedly loosen\u003c\/li\u003e\n\u003cli\u003eSet screw will not remain secure\u003c\/li\u003e\n\u003cli\u003eInternal bore is worn or damaged\u003c\/li\u003e\n\u003cli\u003eHub no longer centers the fan blade correctly\u003c\/li\u003e\n\u003cli\u003eFan blade contacts the shroud or guard\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThese symptoms do not automatically confirm hub failure. A bent motor shaft, worn motor bearings, damaged fan blade, loose motor mount, incorrect blade pitch, or shroud alignment problem can create similar symptoms.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Hub Alignment Matters\u003c\/h2\u003e\n\n\u003cp\u003eThe hub must center the fan blade correctly on the motor shaft. Even small alignment problems can create vibration that places additional load on the motor bearings and fan assembly.\u003c\/p\u003e\n\n\u003cp\u003eImproper hub installation can contribute to:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eUneven fan rotation\u003c\/li\u003e\n\u003cli\u003eBlade wobble\u003c\/li\u003e\n\u003cli\u003eMotor-bearing wear\u003c\/li\u003e\n\u003cli\u003eNoise\u003c\/li\u003e\n\u003cli\u003eFan-shroud contact\u003c\/li\u003e\n\u003cli\u003eReduced airflow\u003c\/li\u003e\n\u003cli\u003ePremature fan-component failure\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInspect the Motor Shaft\u003c\/h2\u003e\n\n\u003cp\u003eBefore installing a new 1\/2\" fan hub, inspect the motor shaft carefully.\u003c\/p\u003e\n\n\u003cp\u003eCheck for:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eBent shaft\u003c\/li\u003e\n\u003cli\u003eExcessive shaft play\u003c\/li\u003e\n\u003cli\u003eWorn flats or key surfaces where applicable\u003c\/li\u003e\n\u003cli\u003eCorrosion\u003c\/li\u003e\n\u003cli\u003eDamaged threads where applicable\u003c\/li\u003e\n\u003cli\u003eScoring or wear at the previous hub location\u003c\/li\u003e\n\u003cli\u003eMotor-bearing movement\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eA damaged motor shaft can cause a new hub and fan blade to run out of alignment.\u003c\/p\u003e\n\n\u003ch2\u003eInspect the Fan Blade\u003c\/h2\u003e\n\n\u003cp\u003eThe fan blade should also be inspected before reusing it with the replacement hub.\u003c\/p\u003e\n\n\u003cp\u003eLook for:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eBent blades\u003c\/li\u003e\n\u003cli\u003eCracks\u003c\/li\u003e\n\u003cli\u003eDistorted mounting holes\u003c\/li\u003e\n\u003cli\u003eLoose mounting hardware\u003c\/li\u003e\n\u003cli\u003eDamage around the blade center\u003c\/li\u003e\n\u003cli\u003eUneven blade pitch\u003c\/li\u003e\n\u003cli\u003eEvidence of previous shroud contact\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eA damaged or unbalanced fan blade can create vibration even when the hub is installed correctly.\u003c\/p\u003e\n\n\u003ch2\u003eTechnician Checks Before Ordering\u003c\/h2\u003e\n\n\u003cp\u003eBefore ordering this fan blade hub, verify:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e1\/2\" motor shaft diameter\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eOriginal hub bore\u003c\/li\u003e\n\u003cli\u003eBlade mounting-hole pattern\u003c\/li\u003e\n\u003cli\u003eNumber of blade mounting points\u003c\/li\u003e\n\u003cli\u003eHub diameter\u003c\/li\u003e\n\u003cli\u003eHub depth \/ offset\u003c\/li\u003e\n\u003cli\u003eSet-screw or shaft-locking arrangement\u003c\/li\u003e\n\u003cli\u003eOriginal fan-blade configuration\u003c\/li\u003e\n\u003cli\u003eMotor shaft condition\u003c\/li\u003e\n\u003cli\u003eRequired fan alignment\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eDo not order by shaft size alone.\u003c\/strong\u003e Two hubs with a 1\/2\" bore may still have different blade mounting patterns, offsets, diameters, or hardware configurations.\u003c\/p\u003e\n\n\u003ch2\u003eHub vs. Fan Blade Fitment\u003c\/h2\u003e\n\n\u003cp\u003eThe hub and blade must work together as one properly centered rotating assembly. Matching the shaft bore alone does not guarantee the blade will bolt correctly to the hub.\u003c\/p\u003e\n\n\u003cp\u003eCompare the original assembly for:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eMounting-hole spacing\u003c\/li\u003e\n\u003cli\u003eFastener size\u003c\/li\u003e\n\u003cli\u003eBlade-center opening\u003c\/li\u003e\n\u003cli\u003eHub offset\u003c\/li\u003e\n\u003cli\u003eBlade orientation\u003c\/li\u003e\n\u003cli\u003eOverall assembled clearance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\n\u003cp\u003eDisconnect electrical power before servicing any commercial refrigeration fan assembly.\u003c\/p\u003e\n\n\u003cp\u003eBefore removing the original hub, document:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eHub position on the shaft\u003c\/li\u003e\n\u003cli\u003eFan-blade orientation\u003c\/li\u003e\n\u003cli\u003eBlade mounting position\u003c\/li\u003e\n\u003cli\u003eSet-screw location\u003c\/li\u003e\n\u003cli\u003eShaft engagement depth\u003c\/li\u003e\n\u003cli\u003eClearance from the fan guard or shroud\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eInstall the replacement hub securely and make sure the blade remains centered. Tighten mounting hardware appropriately for the original fan assembly.\u003c\/p\u003e\n\n\u003cp\u003eBefore restoring power, rotate the fan by hand and verify:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eBlade turns freely\u003c\/li\u003e\n\u003cli\u003eNo blade wobble is visible\u003c\/li\u003e\n\u003cli\u003eHub remains centered\u003c\/li\u003e\n\u003cli\u003eBlade clears the guard and shroud\u003c\/li\u003e\n\u003cli\u003eNo wiring or surrounding components interfere with rotation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eAfter power is restored, verify smooth operation without abnormal vibration or noise.\u003c\/p\u003e\n\n\u003ch2\u003eCommercial Refrigeration Applications\u003c\/h2\u003e\n\n\u003cp\u003eThis type of fan blade hub may be used in compatible fan assemblies found in:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eCommercial refrigerators\u003c\/li\u003e\n\u003cli\u003eCommercial freezers\u003c\/li\u003e\n\u003cli\u003eWalk-in coolers\u003c\/li\u003e\n\u003cli\u003eWalk-in freezers\u003c\/li\u003e\n\u003cli\u003eReach-in refrigeration\u003c\/li\u003e\n\u003cli\u003eCondensing units\u003c\/li\u003e\n\u003cli\u003eEvaporator fan assemblies\u003c\/li\u003e\n\u003cli\u003eCommercial cooling equipment\u003c\/li\u003e\n\u003cli\u003eFoodservice refrigeration systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Exact Fan Hub Identification Matters\u003c\/h2\u003e\n\n\u003cp\u003eCommercial fan hubs can look similar while having different shaft bores, blade mounting patterns, offsets, depths, locking methods, and equipment applications.\u003c\/p\u003e\n\n\u003cp\u003eFor this replacement, the primary verified specification is the \u003cstrong\u003e1\/2\" shaft bore\u003c\/strong\u003e. Match the original mounting pattern and physical hub configuration before ordering.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003ch3\u003eWhat size motor shaft does this fan hub fit?\u003c\/h3\u003e\n\u003cp\u003eThis hub is identified for a \u003cstrong\u003e1\/2-inch motor shaft\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eIs this a fan blade or only the hub?\u003c\/h3\u003e\n\u003cp\u003eThis listing is for the \u003cstrong\u003efan blade hub assembly\u003c\/strong\u003e, not the fan blade itself.\u003c\/p\u003e\n\n\u003ch3\u003eWhat does a fan blade hub do?\u003c\/h3\u003e\n\u003cp\u003eThe hub connects the fan blade to the motor shaft and transfers rotational force from the motor to the blade.\u003c\/p\u003e\n\n\u003ch3\u003eCan a worn hub cause fan vibration?\u003c\/h3\u003e\n\u003cp\u003eYes. A loose, distorted, or worn hub can cause blade wobble, misalignment, and excessive vibration.\u003c\/p\u003e\n\n\u003ch3\u003eCan I use this on any 1\/2\" motor shaft?\u003c\/h3\u003e\n\u003cp\u003eNot automatically. The blade mounting pattern, hub offset, locking arrangement, and fan configuration must also match.\u003c\/p\u003e\n\n\u003ch3\u003eShould I inspect the motor shaft before installing the new hub?\u003c\/h3\u003e\n\u003cp\u003eYes. A bent or worn motor shaft can cause improper alignment and damage the replacement hub or blade.\u003c\/p\u003e\n\n\u003ch3\u003eShould I inspect the fan blade too?\u003c\/h3\u003e\n\u003cp\u003eYes. A bent, cracked, or unbalanced blade can produce vibration even with a new hub.\u003c\/p\u003e\n\n\u003ch3\u003eHow do I know if my existing hub is worn?\u003c\/h3\u003e\n\u003cp\u003eCommon signs include excessive play on the shaft, damaged bore surfaces, blade wobble, slipping, loose hardware, or visible hub deformation.\u003c\/p\u003e\n\n\u003ch3\u003eHow do I confirm this is the correct replacement?\u003c\/h3\u003e\n\u003cp\u003eVerify the \u003cstrong\u003e1\/2\" shaft bore\u003c\/strong\u003e, mounting-hole pattern, hub dimensions, blade interface, set-screw arrangement, and original fan assembly before ordering.\u003c\/p\u003e\n\n\u003ch3\u003eIs professional installation recommended?\u003c\/h3\u003e\n\u003cp\u003eQualified commercial refrigeration personnel can verify shaft condition, hub alignment, blade mounting, clearance, and fan operation during replacement.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Buy From Parts Direct Online?\u003c\/h2\u003e\n\n\u003cp\u003eParts Direct Online supplies commercial refrigeration fan blades, hubs, fan motors, guards, controls, heaters, gaskets, and related replacement components for service technicians, contractors, restaurants, supermarkets, cold-storage facilities, and foodservice operations throughout the United States.\u003c\/p\u003e","brand":"PartsDirectonline","offers":[{"title":"Default Title","offer_id":51370411196639,"sku":null,"price":23.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0623\/3047\/0623\/files\/FANBLADEHUB.webp?v=1789158941","url":"https:\/\/partsdirectonline.com\/products\/1-2-inch-bore-steel-fan-blade-hub","provider":"PartsDirectonline","version":"1.0","type":"link"}