{"product_id":"silicon-nitride-ceramic-deep-groove-ball-bearing-all-size","title":"Silicon Nitride Ceramic Bearings Deep Groove Ball Bearing with Retainer All Size","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eSilicon Nitride Ceramic Deep Groove Ball Bearings — Precision Performance Across Every Size\u003c\/h2\u003e\n\u003cp\u003eEngineers, hobbyists, and equipment builders who demand reliable rotation in demanding environments know that standard steel bearings fall short when exposed to moisture, chemicals, or extreme speeds. Silicon nitride ceramic deep groove ball bearings are engineered for those exact conditions — delivering consistent, low-friction performance where metal bearings corrode, seize, or wear prematurely.\u003c\/p\u003e\n\u003cp\u003eEach bearing is constructed from silicon nitride (Si₃N₄) ceramic balls paired with a steel outer and inner ring, held in place by a precision retainer. Available in inner diameters (ID) ranging from 3 mm (approx. 0.12 in) to 35 mm (approx. 1.38 in), with outer diameters (OD) from 7 mm to 62 mm and widths from 2 mm to 16 mm — covering standard series including 683, 684, 685, 686, 687, 688, 689, 693–699, 603–609, 6000–6007, 6200–6206, 6800–6808, and 6900–6906.\u003c\/p\u003e\n\u003cp\u003eThese silicon nitride ceramic ball bearings are widely used in RC car wheel hubs and drone motor shafts where weight savings matter, in laboratory centrifuges and medical devices requiring non-magnetic and non-conductive rotation, and in marine or chemical-processing equipment where corrosion resistance is non-negotiable. Their low density also makes them a go-to choice for high-speed spindle applications in CNC machining and precision tooling.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003e🔧\u003c\/span\u003e \u003cstrong\u003eCompatibility:\u003c\/strong\u003e Fits standard bearing housings for 683, 684, 685, 686, 687, 688, 689, 693–699, 603–609, 6000–6007, 6200–6206, 6800–6808, and 6900–6906 series. Verify your ID × OD × Width dimensions before ordering.\u003c\/div\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These Silicon Nitride Ceramic Deep Groove Ball Bearings\u003c\/h2\u003e\n\u003cul class=\"hdiy-list\"\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚡\u003c\/span\u003e\u003cstrong\u003eExceptional Corrosion Resistance\u003c\/strong\u003e — Silicon nitride ceramic is chemically inert, resisting rust, oxidation, and attack from acids, alkalis, and saltwater environments where steel bearings fail.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🪶\u003c\/span\u003e\u003cstrong\u003eLightweight Ceramic Construction\u003c\/strong\u003e — Si₃N₄ balls are approximately 60% lighter than steel balls of the same size, reducing centrifugal load and enabling higher rotational speeds with less energy.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🌡️\u003c\/span\u003e\u003cstrong\u003eWide Operating Temperature Range\u003c\/strong\u003e — Ceramic material maintains dimensional stability and hardness across a broad temperature range, typically –40 °C to +120 °C (–40 °F to +248 °F) depending on lubrication.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔇\u003c\/span\u003e\u003cstrong\u003eLow Noise, Low Vibration\u003c\/strong\u003e — The precision retainer keeps balls evenly spaced, minimizing vibration and acoustic noise — critical for motors, spindles, and precision instruments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🧲\u003c\/span\u003e\u003cstrong\u003eNon-Magnetic \u0026amp; Non-Conductive\u003c\/strong\u003e — Ideal for MRI-adjacent equipment, electrical isolation applications, and environments where magnetic interference or electrical conductivity must be avoided.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\u003cstrong\u003eFull Size Range in One Listing\u003c\/strong\u003e — 54 size variants spanning series 683 through 6906, so you can source multiple sizes from a single trusted listing without hunting across multiple suppliers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ch2\u003e📐 Technical Specifications — Silicon Nitride Ceramic Ball Bearings\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBall Material\u003c\/th\u003e\n\u003ctd\u003eSilicon Nitride (Si₃N₄) Ceramic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRing Material\u003c\/th\u003e\n\u003ctd\u003eChrome Steel (GCr15) — See variant options for stainless variants\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\u003eInner Diameter (ID) Range\u003c\/th\u003e\n\u003ctd\u003e3 mm – 35 mm (approx. 0.12 in – 1.38 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOuter Diameter (OD) Range\u003c\/th\u003e\n\u003ctd\u003e7 mm – 62 mm (approx. 0.28 in – 2.44 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWidth Range\u003c\/th\u003e\n\u003ctd\u003e2 mm – 16 mm (approx. 0.08 in – 0.63 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBearing Series Covered\u003c\/th\u003e\n\u003ctd\u003e683–689, 693–699, 603–609, 6000–6007, 6200–6206, 6800–6808, 6900–6906\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBearing Type\u003c\/th\u003e\n\u003ctd\u003eDeep Groove Ball Bearing (Open \/ With Retainer)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMax Operating Temperature\u003c\/th\u003e\n\u003ctd\u003eTypically –40 °C to +120 °C (–40 °F to +248 °F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLubrication\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSealing\u003c\/th\u003e\n\u003ctd\u003eOpen (with retainer)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRadial Load Capacity\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDynamic Load Rating\u003c\/th\u003e\n\u003ctd\u003eSee variant options\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\u003eHow do I choose the right bearing size?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eSelect your bearing by matching three dimensions: Inner Diameter (ID) × Outer Diameter (OD) × Width (all in mm). These correspond to your shaft diameter, housing bore, and available axial space. The variant name in this listing follows the format [Series] ID*OD*Width mm — for example, [688] 8*16*5mm means ID=8mm, OD=16mm, Width=5mm.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre silicon nitride ceramic bearings stronger than steel bearings?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eSilicon nitride ceramic is harder than steel (Rockwell hardness ~78 HRC vs. ~60–65 HRC for bearing steel), which means the balls resist deformation and wear under load. However, ceramic is more brittle than steel under impact loads. These bearings excel in high-speed, light-to-moderate radial load applications rather than heavy shock-load environments.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDo these bearings resist corrosion in wet or marine environments?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. Silicon nitride ceramic balls are chemically inert and will not rust or corrode when exposed to water, saltwater, or most common chemicals. The steel rings may require additional protection (such as stainless steel rings) in fully submerged or highly corrosive environments — check the specific variant or contact us to confirm ring material.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre these bearings compatible with my existing housing?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThese bearings follow standard metric deep groove ball bearing dimensions (ISO 15:2017 series), so they are dimensionally interchangeable with standard steel bearings of the same series number. As long as your housing and shaft match the ID × OD × Width of the selected variant, they will fit without modification.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use these bearings in high-speed applications like drone motors or CNC spindles?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eAbsolutely. The lower density of Si₃N₄ balls reduces centrifugal force at high RPM, allowing higher limiting speeds compared to all-steel bearings of the same size. This makes them well-suited for drone motors, RC car wheel hubs, electric motor shafts, and CNC spindle heads where speed and low heat generation are priorities.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDo I need to lubricate these bearings before installation?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThese bearings are supplied open (with retainer, no seals). We recommend applying a thin film of appropriate grease or oil before installation. For high-speed applications, a light spindle oil is preferred; for general use, a lithium-based grease works well. Avoid over-lubrication, which can increase drag and heat.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between the various series (683, 6000, 6200, etc.)?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe series number indicates the bearing's dimensional family. The 600-series (683–689) are miniature bearings with very small IDs (3–9mm). The 6000-series are light-section bearings with moderate OD-to-ID ratios. The 6200-series have a heavier cross-section for higher load capacity. The 6800-series are thin-section bearings with a large OD relative to ID. The 6900-series fall between 6800 and 6000 in cross-section. Choose based on your load, speed, and space requirements.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your Size (ID × OD × Width) above, then add to cart.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"HomeDIYer","offers":[{"title":"[683] 3*7*2mm","offer_id":52410665795858,"sku":"GLFBNHHGLSMZC0191x1","price":34.8,"currency_code":"USD","in_stock":true},{"title":"[684] 4*9*4mm","offer_id":52410665828626,"sku":"GLFBNHHGLSMZC0192x1","price":26.1,"currency_code":"USD","in_stock":true},{"title":"[685] 5*11*5mm","offer_id":52410665861394,"sku":"GLFBNHHGLSMZC0193x1","price":26.1,"currency_code":"USD","in_stock":true},{"title":"[686] 6*13*5mm","offer_id":52410665894162,"sku":"GLFBNHHGLSMZC0194x1","price":34.8,"currency_code":"USD","in_stock":true},{"title":"[687] 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5*13*4mm","offer_id":52410666156306,"sku":"GLFBNHHGLBZSJ056969x1","price":26.1,"currency_code":"USD","in_stock":true},{"title":"[696] 6*15*5mm","offer_id":52410666189074,"sku":"GLFBNHHGLBZSJ056970x1","price":26.1,"currency_code":"USD","in_stock":true},{"title":"[697] 7*17*5mm","offer_id":52410666221842,"sku":"GLFBNHHGLBZSJ056971x1","price":26.1,"currency_code":"USD","in_stock":true},{"title":"[698] 8*19*6mm","offer_id":52410666254610,"sku":"GLFBNHHGLBZSJ056972x1","price":26.1,"currency_code":"USD","in_stock":true},{"title":"[699] 9*20*6mm","offer_id":52410666287378,"sku":"GLFBNHHGLBZSJ056973x1","price":26.78,"currency_code":"USD","in_stock":true},{"title":"[603] 3*9*3mm","offer_id":52410666320146,"sku":"GLFBNHHGLBZSJ056974x1","price":33.66,"currency_code":"USD","in_stock":true},{"title":"[604] 4*12*4mm","offer_id":52410666352914,"sku":"GLFBNHHGLBZSJ056975x1","price":26.1,"currency_code":"USD","in_stock":true},{"title":"[605] 5*14*5mm","offer_id":52410666385682,"sku":"GLFBNHHGLBZSJ056976x1","price":26.1,"currency_code":"USD","in_stock":true},{"title":"[606] 6*17*6mm","offer_id":52410666418450,"sku":"GLFBNHHGLBZSJ056977x1","price":25.42,"currency_code":"USD","in_stock":true},{"title":"[607] 7*19*6mm","offer_id":52410666451218,"sku":"GLFBNHHGLBZSJ056978x1","price":25.42,"currency_code":"USD","in_stock":true},{"title":"[608] 8*22*7mm","offer_id":52410666483986,"sku":"GLFBNHHGLBZSJ056979x1","price":25.42,"currency_code":"USD","in_stock":true},{"title":"[609] 9*24*7mm","offer_id":52410666516754,"sku":"GLFBNHHGLBZSJ056980x1","price":26.1,"currency_code":"USD","in_stock":true},{"title":"[6800] 10*19*5mm","offer_id":52410666549522,"sku":"GLFBNHHGLBZSJ056981x1","price":25.42,"currency_code":"USD","in_stock":true},{"title":"[6801] 12*21*5mm","offer_id":52410666582290,"sku":"GLFBNHHGLBZSJ056982x1","price":26.1,"currency_code":"USD","in_stock":true},{"title":"[6802] 15*24*5mm","offer_id":52410666615058,"sku":"GLFBNHHGLBZSJ056983x1","price":31.67,"currency_code":"USD","in_stock":true},{"title":"[6803] 17*26*5mm","offer_id":52410666647826,"sku":"GLFBNHHGLBZSJ056984x1","price":31.67,"currency_code":"USD","in_stock":true},{"title":"[6804] 20*32*7mm","offer_id":52410666680594,"sku":"GLFBNHHGLBZSJ056985x1","price":34.8,"currency_code":"USD","in_stock":true},{"title":"[6805] 25*37*7mm","offer_id":52410666713362,"sku":"GLFBNHHGLBZSJ056986x1","price":38.01,"currency_code":"USD","in_stock":true},{"title":"[6806] 30*42*7mm","offer_id":52410666746130,"sku":"GLFBNHHGLBZSJ056987x1","price":46.23,"currency_code":"USD","in_stock":true},{"title":"[6807] 35*47*7mm","offer_id":52410666778898,"sku":"GLFBNHHGLBZSJ056988x1","price":56.78,"currency_code":"USD","in_stock":true},{"title":"[6808] 35*47*7mm","offer_id":52410666811666,"sku":"GLFBNHHGLSMZC0010x1","price":102.61,"currency_code":"USD","in_stock":true},{"title":"[6200] 10*30*9mm","offer_id":52410666844434,"sku":"GLFBNHHGLBZSJ056989x1","price":34.61,"currency_code":"USD","in_stock":true},{"title":"[6201] 12*32*10mm","offer_id":52410666877202,"sku":"GLFBNHHGLBZSJ056990x1","price":40.73,"currency_code":"USD","in_stock":true},{"title":"[6202] 15*35*11mm","offer_id":52410666909970,"sku":"GLFBNHHGLBZSJ056991x1","price":46.99,"currency_code":"USD","in_stock":true},{"title":"[6203] 17*40*12mm","offer_id":52410666942738,"sku":"GLFBNHHGLBZSJ056992x1","price":44.27,"currency_code":"USD","in_stock":true},{"title":"[6204] 20*47*14mm","offer_id":52410666975506,"sku":"GLFBNHHGLBZSJ056993x1","price":82.4,"currency_code":"USD","in_stock":true},{"title":"[6205] 25*52*15mm","offer_id":52410667008274,"sku":"GLFBNHHGLBZSJ056994x1","price":86.97,"currency_code":"USD","in_stock":true},{"title":"[6206] 30*62*16mm","offer_id":52410667041042,"sku":"GLFBNHHGLBZSJ056995x1","price":124.7,"currency_code":"USD","in_stock":true},{"title":"[6000] 10*26*8mm","offer_id":52410667073810,"sku":"GLFBNHHGLBZSJ056996x1","price":28.27,"currency_code":"USD","in_stock":true},{"title":"[6001] 12*28*8mm","offer_id":52410667106578,"sku":"GLFBNHHGLBZSJ056997x1","price":28.27,"currency_code":"USD","in_stock":true},{"title":"[6002] 15*32*9mm","offer_id":52410667139346,"sku":"GLFBNHHGLBZSJ056998x1","price":37.74,"currency_code":"USD","in_stock":true},{"title":"[6003] 17*35*10mm","offer_id":52410667172114,"sku":"GLFBNHHGLBZSJ056999x1","price":40.73,"currency_code":"USD","in_stock":true},{"title":"[6004] 20*42*12mm","offer_id":52410667204882,"sku":"GLFBNHHGLBZSJ057000x1","price":54.06,"currency_code":"USD","in_stock":true},{"title":"[6005] 25*47*12mm","offer_id":52410667237650,"sku":"GLFBNHHGLBZSJ057001x1","price":64.72,"currency_code":"USD","in_stock":true},{"title":"[6006] 30*55*13mm","offer_id":52410667270418,"sku":"GLFBNHHGLBZSJ057002x1","price":98.72,"currency_code":"USD","in_stock":true},{"title":"[6007] 35*62*14mm","offer_id":52410667303186,"sku":"GLFBNHHGLBZSJ057003x1","price":125.32,"currency_code":"USD","in_stock":true},{"title":"[6900] 10*22*6mm","offer_id":52410667335954,"sku":"GLFBNHHGLBZSJ057005x1","price":25.28,"currency_code":"USD","in_stock":true},{"title":"[6901] 12*24*6mm","offer_id":52410667368722,"sku":"GLFBNHHGLBZSJ057006x1","price":25.83,"currency_code":"USD","in_stock":true},{"title":"[6902] 15*28*7mm","offer_id":52410667401490,"sku":"GLFBNHHGLBZSJ057007x1","price":31.48,"currency_code":"USD","in_stock":true},{"title":"[6903] 17*30*7mm","offer_id":52410667434258,"sku":"GLFBNHHGLBZSJ057008x1","price":31.48,"currency_code":"USD","in_stock":true},{"title":"[6904] 20*37*9mm","offer_id":52410667467026,"sku":"GLFBNHHGLBZSJ057009x1","price":41.33,"currency_code":"USD","in_stock":true},{"title":"[6905] 25*42*9mm","offer_id":52410667499794,"sku":"GLFBNHHGLBZSJ057010x1","price":47.86,"currency_code":"USD","in_stock":true},{"title":"[6906] 30*47*9mm","offer_id":52410667532562,"sku":"GLFBNHHGLBZSJ057011x1","price":64.31,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Main-01_b1f6c1ff-2ab6-4e43-8685-88dc2b7ccfb2.jpg?v=1782556268","url":"https:\/\/homediyer.com\/products\/silicon-nitride-ceramic-deep-groove-ball-bearing-all-size","provider":"HomeDIYer","version":"1.0","type":"link"}