{"product_id":"koyo-koyo6318-zzc3-deep-groove-ball-bearing-90mm","title":"Koyo KOYO6318-ZZC3 Deep Groove Ball Bearing 90mm","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe KOYO KOYO6318-ZZC3 is a single-row, deep groove radial ball bearing built for applications where moderate contamination is a concern. The double metal shield (ZZ) configuration keeps grease in and contaminants out, making it suitable for environments where an open bearing would be exposed to dust or debris. The C3 internal clearance designation provides a looser-than-standard fit, accommodating thermal expansion and higher-speed operation. Licensed bearing technicians, millwrights, and HVAC equipment service professionals are the typical installers for bearings in this series.\u003c\/p\u003e\u003cp\u003eThis bearing is commonly used in industrial and commercial equipment including electric motors, blowers, fans, pumps, and HVAC air-handling units. The 63 series designation places it in a medium-duty load range appropriate for radial load applications found in both commercial mechanical systems and light industrial machinery. Its shielded design suits installations where periodic relubrication access is limited.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eDouble metal shield (ZZ) construction retains grease and resists moderate contamination\u003c\/li\u003e\n\u003cli\u003eC3 internal clearance rating accommodates thermal expansion and elevated operating temperatures\u003c\/li\u003e\n\u003cli\u003eSingle-row deep groove design handles radial loads with low friction\u003c\/li\u003e\n\u003cli\u003e63 series medium-duty load capacity suitable for motors, fans, and pumps\u003c\/li\u003e\n\u003cli\u003eCompatible with oil or grease lubrication systems\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a direct replacement for 6318-ZZ C3 designation bearings used in single-row deep groove ball bearing applications across industrial motors, blowers, fans, and HVAC equipment requiring a 90mm bore.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eBearing installation should be performed by a qualified millwright or mechanical technician. Always de-energize and lock out the equipment before removing or installing any bearing. Use a proper bearing press or induction heater when seating the bearing onto a shaft — never strike the bearing directly with a hammer, as this can damage the raceways and shielding. Verify housing bore and shaft tolerances before installation to maintain the intended C3 clearance.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 63\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBore Diameter\u003c\/strong\u003e: 90mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRow Configuration\u003c\/strong\u003e: Single Row\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBearing Type\u003c\/strong\u003e: Deep Groove Ball Bearing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShield Type\u003c\/strong\u003e: Double Metal Shield (ZZ)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternal Clearance\u003c\/strong\u003e: C3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLubrication\u003c\/strong\u003e: Grease or Oil\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: KOYO\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: KOYO6318-ZZC3\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KOYO","offers":[{"title":"Default Title","offer_id":51468224594226,"sku":"KOYO6318-ZZC3","price":292.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/313945015.png?v=1783915020","url":"https:\/\/voomisupply.com\/products\/koyo-koyo6318-zzc3-deep-groove-ball-bearing-90mm","provider":"Voomi Supply","version":"1.0","type":"link"}