{"product_id":"smr3121-5-2rs-ceramic-bearing-21-5","title":"SMR3121.5-2RS Ceramic Bearing 21.5x31x7 Si3N4 PTFE ABEC-5 Bearing","description":"\u003ccenter\u003e\n\u003ctable cellspacing=\"2\" cellpadding=\"10\" bg=\"\" border=\"1\"\u003e\u003ctbody\u003e\u003ctr\u003e\u003ctd align=\"center\"\u003e\u003cfont face=\"Tahoma\" size=\"+2\"\u003e21.5 x 31 x 7 Stainless            Steel Premium ABEC-5 Ball Bearing\u003cbr\u003e            Silicon Nitride Ceramic Balls\u003cbr\u003e            2 PTFE Seals\u003c\/font\u003e\u003c\/td\u003e\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cbr\u003e\u003cbr\u003e\u003ctable cellspacing=\"2\" cellpadding=\"10\" bg=\"\" border=\"0\"\u003e\u003ctbody\u003e\u003ctr\u003e\n\u003ctd valign=\"center\" align=\"center\" width=\"15%\"\u003e\u003ctable cellspacing=\"3\" cellpadding=\"5\" bg=\"\" border=\"0\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\u003ctd valign=\"center\" align=\"center\"\u003e\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd valign=\"center\" align=\"center\"\u003e\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/td\u003e\n\u003ctd align=\"left\" valign=\"top\" width=\"75%\"\u003e\n\u003cp align=\"justify\"\u003e\u003cfont face=\"tahoma\"\u003e21.5 x 31 x 7 Stainless Steel              Premium ABEC-5 Ball Bearing, Silicon Nitride ceramic              balls, inner diameter is 21.5mm, outer diameter is 31mm              and width is 7mm.\u003c\/font\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cfont face=\"tahoma\"\u003e21.5 x 31 x 7 Ball                Bearing\u003c\/font\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cfont face=\"tahoma\"\u003eDeep Groove Radial Ball                Bearing\u003c\/font\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cfont face=\"tahoma\"\u003eClosures: PTFE Sealed\u003c\/font\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cfont face=\"tahoma\"\u003eQuality: Premium ABEC-5\u003c\/font\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cfont face=\"tahoma\"\u003eMaterial: Stainless Steel\u003c\/font\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cfont face=\"tahoma\"\u003eBalls: Silicon Nitride Ceramic                (Si3N4)\u003c\/font\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cfont face=\"tahoma\"\u003eLubrication: Self Lubricated                (Grease SRL) Bearing\u003c\/font\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cfont face=\"tahoma\"\u003eDimensions: 21.5mm x 31mm x                7mm\/Metric\u003c\/font\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cfont face=\"tahoma\"\u003eID (inner diameter)\/Bore:                21.5mm\u003c\/font\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cfont face=\"tahoma\"\u003eOD (outer diameter): 31mm\u003c\/font\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cfont face=\"tahoma\"\u003eWidth:                7mm\u003c\/font\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cfont face=\"tahoma\"\u003eQuantity: 1 Bearing\u003c\/font\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\n\u003c\/center\u003e\u003c!--Beginning HYBRID CERAMIC BEARINGS--\u003e\u003cp\u003e\u003cbr\u003e\u003csmall\u003e\u003cem\u003eVXB Category: Hybrid ceramic    bearings\u003c\/em\u003e\u003c\/small\u003e\u003cbr\u003e\u003c!--Ending HYBRID CERAMIC BEARINGS--\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cbr\u003e\u003ch3\u003e💡 What Does ABEC-5 Mean?\u003c\/h3\u003e \u003cp\u003e\u003cstrong\u003eABEC-5\u003c\/strong\u003e is a precision rating from the \u003cem\u003eAnnular Bearing Engineers’ Committee (ABEC)\u003c\/em\u003e, indicating that the bearing is manufactured with \u003cstrong\u003etighter tolerances\u003c\/strong\u003e for improved accuracy and performance.\u003c\/p\u003e \u003cp\u003eBearings rated ABEC-5 are designed for \u003cstrong\u003ehigh-speed, low-friction operation\u003c\/strong\u003e, making them ideal for electric motors, precision tools, 3D printers, and performance equipment where smooth rotation and long service life are essential.\u003c\/p\u003e","brand":"VXB","offers":[{"title":"Default Title","offer_id":49310025646273,"sku":"Kit11865","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0828\/0955\/3089\/files\/smr3121-5-2rs-ceramic-bearing-21-5x31x7-si3n4-ptfe-abec-5-bearings-vxb-ball-bearings_13946f1d-127a-4dd8-b27b-246f77d40746.jpg?v=1748646745","url":"https:\/\/smallbearings.com\/products\/smr3121-5-2rs-ceramic-bearing-21-5","provider":"Small Bearings","version":"1.0","type":"link"}