{"title":"Đường kính bên trong - 21,5mm","description":"\u003ch1\u003e21,5mm\u003c\/h1\u003e\u003ch2\u003eMua sắm trực tuyến 21,5mm\u003c\/h2\u003e","products":[{"product_id":"mr3121-2rs-full-complement-full-ceramic-bear","title":"MR3121-2RS bổ sung đầy đủ Full gốm mang 21.5x31x7 ZRO2 Vòng bi","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\"\u003eMR3121-2RS Bổ sung đầy đủ bing vòng đệm bằng gốm\u003cbr\u003e Zirconia\u003cbr\u003e 21,5mm x 31mm x 7mm\u003c\/font\u003e\u003c\/td\u003e\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cbr\u003e\u003cbr\u003e\u003ctable cellspacing=\"2\" cellpadding=\"5\" bg=\"\" border=\"0\"\u003e\u003ctbody\u003e\u003ctr\u003e\n\u003ctd\u003e\u003ctable cellspacing=\"3\" cellpadding=\"5\" bg=\"\" border=\"0\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\u003ctd valign=\"center\" align=\"middle\"\u003e\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd valign=\"center\" align=\"middle\"\u003e\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/td\u003e\n\u003ctd valign=\"top\" align=\"left\"\u003e\n\u003cp align=\"justify\"\u003e\u003cfont face=\"tahoma\"\u003eMR3121-2RS Bổ sung đầy đủ vòng bi niêm phong gốm, đo đường kính bên trong là 21,5mm, đường kính ngoài là 31mm và chiều rộng là 7mm, ổ trục được làm từ oxit zirconium gốm ZRO2.\u003c\/font\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cfont face=\"tahoma\"\u003eMR3121-2RS BALL BALL\u003c\/font\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cfont face=\"tahoma\"\u003eVòng bi bóng bổ sung đầy đủ\u003c\/font\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cfont face=\"tahoma\"\u003eLồng: Không có lồng\u003c\/font\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cfont face=\"tahoma\"\u003eBóng: gốm ZRO2\u003c\/font\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cfont face=\"tahoma\"\u003eĐóng cửa: Bìa PTFE\u003c\/font\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cfont face=\"tahoma\"\u003eCác cuộc đua bên trong\/bên ngoài: gốm ZRO2\u003c\/font\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cfont face=\"tahoma\"\u003eKích thước: 21,5 mm x 31mm x 7mm\/số liệu\u003c\/font\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cfont face=\"tahoma\"\u003eId (đường kính bên trong)\/lỗ khoan: 21,5mm\u003c\/font\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cfont face=\"tahoma\"\u003eOD (đường kính ngoài): 31mm\u003c\/font\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cfont face=\"tahoma\"\u003eChiều rộng: 7mm\u003c\/font\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cfont face=\"tahoma\"\u003eKích thước: 21,5 x 31 x 7 mm\u003c\/font\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cfont face=\"tahoma\"\u003eSố lượng: Một ổ trục\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\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003ccenter\u003e\u003c\/center\u003e","brand":"VXB","offers":[{"title":"Default Title","offer_id":44718175813830,"sku":"Kit8448","price":53.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0685\/7375\/7638\/files\/mr3121-2rs-full-complement-ceramic-bearing-21-5x31x7-zro2-bearings-vxb-ball-bearings.jpg?v=1785752368"},{"product_id":"smr31215-2rs-ceramic-bearing-215x31x7-si3n4","title":"SMR3121.5-2RS mang gốm 21,5x31x7 SI3N4 PTFE ABEC-5","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 Thép không gỉ Premium ABEC-5 BALL\u003cbr\u003e Bóng gốm silicon nitride\u003cbr\u003e 2 con dấu PTFE\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 Thép không gỉ cao cấp ABEC-5 Ball Ball, Balls gốm silicon nitride, đường kính bên trong là 21,5mm, đường kính ngoài là 31mm và chiều rộng là 7mm.\u003c\/font\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cfont face=\"tahoma\"\u003e21,5 x 31 x 7 ổ bi\u003c\/font\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cfont face=\"tahoma\"\u003eDeep Groove Radial Balli\u003c\/font\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cfont face=\"tahoma\"\u003eĐóng cửa: PTFE niêm phong\u003c\/font\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cfont face=\"tahoma\"\u003eChất lượng: ABEC-5 cao cấp\u003c\/font\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cfont face=\"tahoma\"\u003eVật liệu: Thép không gỉ\u003c\/font\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cfont face=\"tahoma\"\u003eBalls: Silicon Nitride gốm (SI3N4)\u003c\/font\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cfont face=\"tahoma\"\u003eBôi trơn: Vòng bi tự bôi trơn (Mỡ SRL)\u003c\/font\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cfont face=\"tahoma\"\u003eKích thước: 21,5mm x 31mm x 7mm\/số liệu\u003c\/font\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cfont face=\"tahoma\"\u003eId (đường kính bên trong)\/lỗ khoan: 21,5mm\u003c\/font\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cfont face=\"tahoma\"\u003eOD (đường kính ngoài): 31mm\u003c\/font\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cfont face=\"tahoma\"\u003eChiều rộng: 7mm\u003c\/font\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cfont face=\"tahoma\"\u003eSố lượng: 1 ổ trục\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\u003eDanh mục VXB: Vòng bi gốm lai\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\u003c\/h3\u003e","brand":"VXB","offers":[{"title":"Default Title","offer_id":44718285684934,"sku":"Kit11865","price":32.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0685\/7375\/7638\/files\/smr3121-5-2rs-ceramic-bearing-21-5x31x7-si3n4-ptfe-abec-5-bearings-vxb-ball-bearings.jpg?v=1785757173"},{"product_id":"smr31215-ceramic-bearing-215mm-metric-sealed","title":"SMR3121.5 Vòng bi mang theo 21,5mm Số liệu đã niêm phong ABEC-5","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\"\u003eSMR3121.5 Vòng bi bằng thép không gỉ ABEC-5 cao cấp\u003cbr\u003eBóng gốm silicon nitride\u003cbr\u003e 21,5 x 31 x 7 mm\u003c\/font\u003e\u003c\/td\u003e\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cbr\u003e\u003cbr\u003e\u003ctable cellspacing=\"2\" cellpadding=\"5\" bg=\"\" border=\"1\"\u003e\u003ctbody\u003e\u003ctr\u003e\n\u003ctd valign=\"center\" align=\"Center\" width=\"\"\u003e\u003ctable cellspacing=\"3\" cellpadding=\"5\" bg=\"\" border=\"0\"\u003e\u003ctbody\u003e\u003ctr\u003e\u003ctd valign=\"center\" align=\"Center\"\u003e\u003c\/td\u003e\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/td\u003e\n\u003ctd align=\"left\" valign=\"top\" width=\"\"\u003e\u003cfont face=\"tahoma\"\u003e\u003cp align=\"justify\"\u003eSMR3121.5 Vòng bi bằng thép không gỉ ABEC-5 Premium ABEC-5, ổ trục là bóng gốm silicon nitride.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSMR3121.5 Vòng bi\u003c\/li\u003e\n\u003cli\u003eChất lượng: ABEC-5 cao cấp\u003c\/li\u003e\n\u003cli\u003eĐóng cửa: Mở\u003c\/li\u003e\n\u003cli\u003eVật liệu: Thép không gỉ \u003c\/li\u003e\n\u003cli\u003eBalls: Silicon Nitride gốm (SI3N4) \u003c\/li\u003e\n\u003cli\u003eKích thước: 21,5mm x 31mm x 7mm\/số liệu\u003c\/li\u003e\n\u003cli\u003eId (đường kính bên trong)\/lỗ khoan: 21,5mm\u003c\/li\u003e\n\u003cli\u003eOD (đường kính ngoài): 31mm\u003c\/li\u003e\n\u003cli\u003eChiều rộng: 7mm\u003c\/li\u003e\n\u003cli\u003eKích thước: 21,5 x 31 x 7 mm\u003c\/li\u003e\n\u003cli\u003eSố lượng: 1 ổ trục \u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/font\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\n\u003c\/center\u003e\u003c!--Beginning HYBRID CERAMIC BEARINGS--\u003e\u003cbr\u003e\u003csmall\u003e\u003ci\u003eDanh mục VXB: Vòng bi gốm lai\u003c\/i\u003e\u003c\/small\u003e\u003cbr\u003e\u003c!--Ending HYBRID CERAMIC BEARINGS--\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003ch3\u003e\u003c\/h3\u003e","brand":"VXB","offers":[{"title":"Default Title","offer_id":44718322942150,"sku":"Kit13043","price":32.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0685\/7375\/7638\/files\/smr3121-5-ceramic-bearing-21-5mm-metric-sealed-abec-5-bearings-vxb-ball-bearings-1.jpg?v=1785756778"},{"product_id":"215317-2rs-sealed-bearing-215x31x7-metric","title":"Vòng bi kín 215317-2RS 21.5x31x7 Mét","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\"\u003eVòng bi cầu kín 215317-2RS\u003cbr\u003e21.5mm x 31mm x 7mm\u003c\/font\u003e\u003c\/td\u003e\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cbr\u003e\u003cbr\u003e\u003ctable cellspacing=\"2\" cellpadding=\"5\" width=\"85%\" bg border=\"0\"\u003e\u003ctbody\u003e\u003ctr\u003e\n\u003ctd align=\"center\" valign=\"center\"\u003e\u003ctable cellspacing=\"3\" cellpadding=\"5\" bg border=\"0\"\u003e\u003ctbody\u003e\u003ctr\u003e\u003ctd valign=\"center\" align=\"Center\"\u003e\u003c\/td\u003e\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/td\u003e\n\u003ctd valign=\"top\" align=\"left\"\u003e\u003cfont face=\"Tahoma\"\u003e\u003cp align=\"justify\"\u003eVòng bi cầu kín 215317-2RS, vòng bi được làm từ thép Chrome với bi thép chrome và lồng thép, vòng bi 215317-2RS được đóng kín bằng phớt cao su để bảo vệ vòng bi khỏi bụi bẩn hoặc các tạp chất có thể có, vòng bi được đóng kín và tự bôi trơn, chất lượng được đặt ở mức EMQ (chất lượng động cơ điện) để đảm bảo tốc độ cao, vòng bi 215317-2RS được bôi trơn bằng mỡ.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eVòng bi cầu 215317-2RS\u003c\/li\u003e\n\u003cli\u003eVòng bi cầu rãnh sâu hướng kính\u003c\/li\u003e\n\u003cli\u003eLồng: Thép\u003c\/li\u003e\n\u003cli\u003eChất liệu: Thép Chrome\u003c\/li\u003e\n\u003cli\u003eBi: Thép Chrome\u003c\/li\u003e\n\u003cli\u003eĐộ hở hướng kính: C0\u003c\/li\u003e\n\u003cli\u003eChất lượng: Chất lượng động cơ điện\u003c\/li\u003e\n\u003cli\u003eBôi trơn: Đã bôi trơn sẵn bằng mỡ vòng bi\u003c\/li\u003e\n\u003cli\u003eĐóng kín: Đóng kín kép với phớt cao su RS\/RS1\/2RS1\u003c\/li\u003e\n\u003cli\u003eKích thước: 21.5mm x 31mm x 7mm\u003c\/li\u003e\n\u003cli\u003eĐường kính trong vòng bi: 21.5mm\u003c\/li\u003e\n\u003cli\u003eĐường kính ngoài vòng bi: 31mm\u003c\/li\u003e\n\u003cli\u003eChiều rộng vòng bi: 7mm\u003c\/li\u003e\n\u003cli\u003eSố lượng: 1 Vòng bi\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/font\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\n\u003c\/center\u003e\u003cbr\u003e","brand":"VXB","offers":[{"title":"Default Title","offer_id":44718661042374,"sku":"Kit21084","price":43.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0685\/7375\/7638\/files\/215317-2rs-sealed-bearing-21-5x31x7-metric-vxb-ball-bearings-1.jpg?v=1785754628"},{"product_id":"mr31215-full-ceramic-bearing-215x31x7mm-id-b","title":"Vòng bi gốm toàn phần MR3121.5 21.5x31x7mm lỗ trong 21.5mm","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\"\u003eVòng bi cầu 6804 Modified\u003cbr\u003eGốm toàn phần\u003cbr\u003e21.5mm x 31mm x 7mm\u003c\/font\u003e\u003c\/td\u003e\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cbr\u003e\u003cbr\u003e\u003ctable cellspacing=\"2\" cellpadding=\"5\" width=\"80%\" bg=\"\" border=\"0\"\u003e\u003ctbody\u003e\u003ctr\u003e\n\u003ctd align=\"center\" valign=\"center\"\u003e\u003ctable cellspacing=\"3\" cellpadding=\"5\" bg=\"\" border=\"0\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\u003ctd valign=\"center\" align=\"middle\"\u003e\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd valign=\"center\" align=\"middle\"\u003e\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/td\u003e\n\u003ctd valign=\"top\" align=\"left\"\u003e\u003cfont face=\"tahoma\"\u003e\u003cp align=\"justify\"\u003e Vòng bi cầu gốm toàn phần, đường kính trong 21.5mm, đường kính ngoài 31mm và chiều rộng 7mm, kích thước vòng bi tiêu chuẩn thường dùng trong nhiều ứng dụng công nghiệp và thương mại, vòng bi được làm từ gốm. \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eVòng bi cầu 6804 Modified\u003c\/li\u003e\n\u003cli\u003eVòng bi cầu gốm toàn phần\u003c\/li\u003e\n\u003cli\u003eBi: Làm từ gốm Zirconia (ZrO₂)\u003c\/li\u003e\n\u003cli\u003eChất liệu vòng giữ: PTFE (Polytetrafluoroethylene)\u003c\/li\u003e\n\u003cli\u003eChất liệu vòng chạy: Gốm Zirconia (ZrO₂) \u003c\/li\u003e\n\u003cli\u003eKích thước: 21.5mm x 31mm x 7mm\/Metric\u003c\/li\u003e\n\u003cli\u003eĐường kính trong (ID)\/Lỗ khoan: 21.5mm\u003c\/li\u003e\n\u003cli\u003eĐường kính ngoài (OD): 31mm\u003c\/li\u003e\n\u003cli\u003eChiều rộng: 7mm\u003c\/li\u003e\n\u003cli\u003eKích thước: 21.5 x 31 x 7 mm\u003c\/li\u003e\n\u003cli\u003eSố lượng: Một vòng bi cầu\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/font\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\n\u003c\/center\u003e\u003c!--Beginning FULL CERAMIC BEARINGS--\u003e\u003cbr\u003e\u003csmall\u003e\u003ci\u003eVXB Category: Vòng bi gốm toàn phần\u003c\/i\u003e\u003c\/small\u003e\u003cbr\u003e\u003c!--Ending FULL CERAMIC BEARINGS--\u003e\u003cbr\u003e\u003cbr\u003e","brand":"VXB","offers":[{"title":"Default Title","offer_id":44718987575494,"sku":"Kit7757","price":53.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0685\/7375\/7638\/files\/mr3121-5-full-ceramic-bearing-21-5x31x7-vxb-ball-bearings.jpg?v=1785752655"}],"url":"https:\/\/bearings.net\/vi\/collections\/d%c6%b0%e1%bb%9dng-kinh-ben-trong-21-5mm.oembed","provider":"Bearings.net","version":"1.0","type":"link"}