{"product_id":"zro2-full-ceramic-bearings-6210-6211-6212","title":"ZrO2 Zirconium Oxide Full Ball Ceramic Bearings Large Model 6210 6211 6212","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eZrO2 Full Ball Ceramic Bearings — Corrosion-Resistant Precision for Demanding Environments\u003c\/h2\u003e\n\u003cp\u003eEngineers and maintenance professionals working in corrosive, high-temperature, or electrically sensitive environments know the cost of bearing failure: unplanned downtime, contaminated product, and accelerated wear on surrounding components. Standard steel bearings corrode, conduct electricity, and require constant lubrication — none of which is acceptable in food processing lines, chemical pumps, or medical equipment.\u003c\/p\u003e\n\u003cp\u003eThese ZrO2 zirconium oxide full ball ceramic bearings feature an all-ceramic construction — balls, inner race, and outer race — with no steel components. Available in three large-frame sizes: 6210 (50×90×20 mm \/ 1.969\"×3.543\"×0.787\"), 6211 (55×100×21 mm \/ 2.165\"×3.937\"×0.827\"), and 6212 (60×110×22 mm \/ 2.362\"×4.331\"×0.866\"). Retainer material is typically PTFE or ceramic, depending on variant.\u003c\/p\u003e\n\u003cp\u003eTypical applications include centrifugal pumps handling aggressive media, food and beverage conveyor systems requiring wash-down compatibility, electric motor spindles where stray currents cause pitting, and high-speed textile or semiconductor equipment where non-magnetic operation is critical.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003e🔁\u003c\/span\u003e Direct dimensional replacement for standard 6210 \/ 6211 \/ 6212 steel deep-groove ball bearings. Confirm shaft and housing tolerances before installation.\u003c\/div\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These ZrO2 Full Ceramic Bearings\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-list\"\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🧪\u003c\/span\u003e\u003cstrong\u003eFull ZrO2 Ceramic Construction\u003c\/strong\u003e\u003cbr\u003eAll rolling elements and races are zirconium oxide — no steel contact surfaces. Eliminates galvanic corrosion and prevents rust in wet or chemically aggressive environments.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚡\u003c\/span\u003e\u003cstrong\u003eElectrically Non-Conductive\u003c\/strong\u003e\u003cbr\u003eZrO2 is an electrical insulator, blocking stray currents that cause pitting and fluting in conventional steel bearings used near VFDs or welding equipment.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🌡️\u003c\/span\u003e\u003cstrong\u003eThermal Stability up to ~400 °C\u003c\/strong\u003e\u003cbr\u003eZirconium oxide retains dimensional stability at elevated temperatures where steel bearings would soften or require heavy grease replenishment.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔇\u003c\/span\u003e\u003cstrong\u003eNon-Magnetic Operation\u003c\/strong\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003cbr\u003eSuitable for MRI-adjacent equipment, magnetic separation machinery, and precision instruments where ferrous contamination is unacceptable.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\u003cstrong\u003eThree Large-Frame Sizes Available\u003c\/strong\u003e\u003cbr\u003e6210, 6211, and 6212 cover bore diameters from 50 mm to 60 mm (1.969\"–2.362\"), fitting a wide range of industrial shaft sizes without custom machining.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e💧\u003c\/span\u003e\u003cstrong\u003eReduced Lubrication Requirement\u003c\/strong\u003e\u003cbr\u003eCeramic surfaces have lower friction coefficients than steel, allowing operation with minimal or dry lubrication in clean-room or food-safe environments where grease contamination is a concern.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ch2\u003e📐 Technical Specifications — ZrO2 Full Ceramic Deep-Groove Ball Bearings\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBearing Type\u003c\/th\u003e\n\u003ctd\u003eFull Ceramic Deep-Groove Ball Bearing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial (Balls \u0026amp; Races)\u003c\/th\u003e\n\u003ctd\u003eZirconium Oxide (ZrO2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRetainer Material\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAvailable Models\u003c\/th\u003e\n\u003ctd\u003e6210 \/ 6211 \/ 6212\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Diameter (ID)\u003c\/th\u003e\n\u003ctd\u003e50 mm \/ 55 mm \/ 60 mm (1.969\" \/ 2.165\" \/ 2.362\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOuter Diameter (OD)\u003c\/th\u003e\n\u003ctd\u003e90 mm \/ 100 mm \/ 110 mm (3.543\" \/ 3.937\" \/ 4.331\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWidth\u003c\/th\u003e\n\u003ctd\u003e20 mm \/ 21 mm \/ 22 mm (0.787\" \/ 0.827\" \/ 0.866\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMax Operating Temperature\u003c\/th\u003e\n\u003ctd\u003eTypically up to 400 °C (752 °F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eElectrical Conductivity\u003c\/th\u003e\n\u003ctd\u003eNon-conductive\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMagnetic Properties\u003c\/th\u003e\n\u003ctd\u003eNon-magnetic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLubrication\u003c\/th\u003e\n\u003ctd\u003eDry or minimal lubrication compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eQuantity per Order\u003c\/th\u003e\n\u003ctd\u003e1 pcs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDimensional Standard\u003c\/th\u003e\n\u003ctd\u003eISO 15 \/ JIS B 1521 compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-faq\"\u003e\n\u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhich size should I choose — 6210, 6211, or 6212?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eMatch the bearing to your shaft diameter: 6210 fits a 50 mm shaft, 6211 fits 55 mm, and 6212 fits 60 mm. Also verify the housing bore accepts the corresponding outer diameter (90 mm, 100 mm, or 110 mm respectively) and that the width (20–22 mm) fits your bearing seat depth.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre these bearings a direct drop-in replacement for standard steel 6210\/6211\/6212 bearings?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes — the outer dimensions follow the same ISO deep-groove ball bearing envelope as their steel equivalents, so they fit the same housings and shafts. However, ceramic bearings have different load ratings and thermal expansion coefficients, so confirm your application's dynamic load requirements before substituting.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow corrosion-resistant is ZrO2 compared to stainless steel bearings?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eZirconium oxide is chemically inert to most acids, alkalis, and salt solutions that would corrode even 316 stainless steel over time. It does not rust, and there is no metallic surface to oxidize. For highly concentrated hydrofluoric acid environments, contact us to confirm compatibility.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan these bearings run without lubrication?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eZrO2 ceramic has a lower surface friction coefficient than steel and can operate with minimal or no lubrication in clean, low-load conditions. For continuous high-speed or high-load applications, a small amount of compatible grease or dry lubricant (e.g., PTFE-based) extends service life. Avoid petroleum-based greases in food-contact environments.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre these bearings suitable for use near electrical equipment or VFDs?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. ZrO2 is an electrical insulator with volume resistivity typically exceeding 10¹⁰ Ω·cm. This makes these bearings effective at blocking stray currents from variable frequency drives (VFDs) that cause electrical discharge machining (EDM) pitting in steel bearings.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat load capacity should I expect compared to steel bearings of the same size?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eFull ceramic bearings generally have lower dynamic load ratings than equivalent steel bearings due to the brittleness of ceramic under impact loads. They perform best in moderate radial loads, high-speed rotation, and environments where corrosion or electrical isolation is the primary concern. For exact load ratings, contact us to confirm.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre these bearings food-safe or suitable for wash-down environments?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eZrO2 ceramic is non-toxic and does not corrode or leach metallic particles, making it suitable for food processing and beverage equipment. Confirm that the retainer material in your selected variant is also food-grade (PTFE retainers are generally accepted). Always verify compliance with your local food safety regulations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your model size and quantity above, then add to cart.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"HomeDIYer","offers":[{"title":"6210- 50*90*20mm \/ 1 pcs","offer_id":52409883033874,"sku":"GLFBDMHGLBZSJ057073x1","price":473.4,"currency_code":"USD","in_stock":true},{"title":"6211- 55*100*21mm \/ 1 pcs","offer_id":52409883066642,"sku":"GLFBDMHGLBZSJ057074x1","price":696.16,"currency_code":"USD","in_stock":true},{"title":"6212- 60*110*22mm \/ 1 pcs","offer_id":52409883099410,"sku":"GLFBDMHGLBZSJ057075x1","price":840.83,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Main-06_d02d1042-ea61-4ea7-b831-57a7ee1293f2.jpg?v=1782349178","url":"https:\/\/homediyer.com\/products\/zro2-full-ceramic-bearings-6210-6211-6212","provider":"HomeDIYer","version":"1.0","type":"link"}