{"product_id":"ket-r3-r3zz-inch-miniature-ball-bearing-3-16-x-1-2-heavy-duty-precision-micro-bearing","title":"KET R3 \/ R3ZZ Inch Miniature Ball Bearing (3\/16\" x 1\/2\") - Heavy-Duty Precision Micro Bearing","description":"\u003cp\u003e\u003cb\u003eProduct Description:\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eCore Selling Points\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eMaximum Heavy-Duty Capacity:\u003c\/b\u003e Precision engineered with a 4.762mm (3\/16\") inner diameter and an extra-thick 12.700mm (1\/2\") outer diameter, delivering a massive 1300 N dynamic load rating for the most extreme high-stress micro-applications \u003ccode\u003e[source: 1]\u003c\/code\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eHigh-Speed Stability:\u003c\/b\u003e Capable of reaching up to 53,000 RPM with oil lubrication and 43,000 RPM with grease, ensuring flawless operational stability under severe radial and axial shock loads \u003ccode\u003e[source: 1]\u003c\/code\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eExact Inch Specifications:\u003c\/b\u003e Meticulously designed for North American and global assemblies requiring strict 3\/16\" inch-based engineering measurements for seamless mechanical integration \u003ccode\u003e[source: 1]\u003c\/code\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eFactory-Direct Supply:\u003c\/b\u003e Manufactured by Ningbo Kexiang Bearing Technology Co., Ltd. with a robust annual capacity of 100 million sets, securing highly competitive B2B wholesale pricing for global procurement \u003ccode\u003e[source: 1]\u003c\/code\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eDetailed Overview\u003c\/b\u003e The KET R3 series deep groove ball bearing is a premium ultra-precision component belonging to our specialized Inch Miniature Series. Established in 2008 in Ningbo, Zhejiang Province, our highly automated manufacturing facility operates under the internationally registered trademark \"KET,\" supplying world-class bearings to global OEM markets \u003ccode\u003e[source: 1]\u003c\/code\u003e. The R3 model features an extra-thick cross-section, providing the ultimate balance of a compact 3\/16\" shaft size and unparalleled structural integrity. It delivers true-to-design dimensional exactness with every production batch for clients utilizing heavy-duty inch-based engineering standards.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eExact Technical Specifications\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eBrand:\u003c\/b\u003e KET \u003ccode\u003e[source: 1]\u003c\/code\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eModel Variants:\u003c\/b\u003e R3 (Open Type) \/ R3ZZ (Shielded Type) \u003ccode\u003e[source: 1]\u003c\/code\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eInner Diameter (d):\u003c\/b\u003e 4.762 mm (3\/16 Inch) \u003ccode\u003e[source: 1]\u003c\/code\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eOuter Diameter (D):\u003c\/b\u003e 12.700 mm (1\/2 Inch) \u003ccode\u003e[source: 1]\u003c\/code\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eWidth \/ Thickness (B\/B1):\u003c\/b\u003e 3.967 mm (Open) \/ 4.978 mm (Shielded) \u003ccode\u003e[source: 1]\u003c\/code\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eChamfer (r):\u003c\/b\u003e 0.3 mm \u003ccode\u003e[source: 1]\u003c\/code\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eBasic Dynamic Load Rating (Cr):\u003c\/b\u003e 1300 N \u003ccode\u003e[source: 1]\u003c\/code\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eBasic Static Load Rating (Cor):\u003c\/b\u003e 485 N \u003ccode\u003e[source: 1]\u003c\/code\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eLimiting Speed (Grease Lubrication):\u003c\/b\u003e Up to 43,000 RPM \u003ccode\u003e[source: 1]\u003c\/code\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eLimiting Speed (Oil Lubrication):\u003c\/b\u003e Up to 53,000 RPM \u003ccode\u003e[source: 1]\u003c\/code\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003ePrimary Industrial Applications\u003c\/b\u003e The KET Inch Miniature Series is highly versatile and globally trusted by precision engineers, particularly in North American and European markets \u003ccode\u003e[source: 1]\u003c\/code\u003e. Featuring the most robust profile in its 3\/16\" bore class, the R3 bearing is specifically ideal for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eHeavy-duty industrial micro motors, high-load cooling fans, and large-scale robotic actuators \u003ccode\u003e[source: 1]\u003c\/code\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHeavy-lift commercial UAVs (Drones), large RC models, and aerospace micro-mechanisms requiring maximum radial stability \u003ccode\u003e[source: 1]\u003c\/code\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHigh-stress medical equipment, robust dental tools, and precision scientific testing instruments enduring high mechanical stress \u003ccode\u003e[source: 1]\u003c\/code\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eStrategic Manufacturing Partner Qualifications\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eInternationally Certified Quality Systems:\u003c\/b\u003e We operate strictly under rigorous global quality management frameworks, proudly holding dual ISO9001 certifications \u003ccode\u003e[source: 4, 9]\u003c\/code\u003e and the stringent automotive industry standard IATF16949 \u003ccode\u003e[source: 8]\u003c\/code\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eRecognized Engineering Innovation:\u003c\/b\u003e Our continuous investment in engineering R\u0026amp;D is officially validated by our recognition as a High-Tech Enterprise \u003ccode\u003e[source: 5]\u003c\/code\u003e and a Technology-Based SME in Zhejiang Province \u003ccode\u003e[source: 10]\u003c\/code\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eGlobal Material Safety Compliance:\u003c\/b\u003e We exclusively utilize premium raw materials that meet strict international safety directives. Our products pass comprehensive third-party SGS laboratory testing for SVHC and RoHS compliance \u003ccode\u003e[source: 6, 7]\u003c\/code\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eUncompromised Quality Control:\u003c\/b\u003e 100% precision-tested utilizing state-of-the-art roundness instruments and automatic noise testing equipment prior to global shipment \u003ccode\u003e[source: 1]\u003c\/code\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eAre You Reviewing Your Bearing Sourcing Costs? Let's Talk.\u003c\/b\u003e Many engineering and procurement teams are currently looking to balance premium quality with better cost control. If you are reviewing your supplier options for the upcoming purchasing cycle, I would be happy to share how we’ve helped similar businesses reduce their sourcing costs without compromising on high-load performance.\u003c\/p\u003e\n\u003cp\u003eReply to this email or reach out directly to discuss your specific requirements or to request free evaluation samples.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eGlobal Sales Representative:\u003c\/b\u003e Ryan Fan\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eDirect Email:\u003c\/b\u003e ryan.fan@ketprecisionbearings.com\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eWhatsApp:\u003c\/b\u003e +86-18067291918\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eOfficial Website:\u003c\/b\u003e \u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.google.com\/search?q=https%3A%2F%2Fwww.ketprecisionbearings.com\u0026amp;authuser=1\" class=\"ng-star-inserted\" target=\"_blank\"\u003ewww.ketprecisionbearings.com\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KET Precision Bearings","offers":[{"title":"4.762mm \/ 12.7mm \/ 2.779 mm (Open) \/ 3.175 mm","offer_id":49204502757632,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0829\/6890\/3936\/files\/ImperialRSeries.webp?v=1787508372","url":"https:\/\/ketprecisionbearings.com\/ru\/products\/ket-r3-r3zz-inch-miniature-ball-bearing-3-16-x-1-2-heavy-duty-precision-micro-bearing","provider":"KET Precision Bearings","version":"1.0","type":"link"}