{"product_id":"lm3uu-linear-bearing-3x7x10mm-3d-printer-cnc","title":"LM3UU Linear Bearing 3x7x10mm for 3D Printers | Kande","description":"\n\u003ch2\u003eLM3UU Linear Bearing 3×7×10mm – Precision Motion for 3D Printers \u0026amp; CNC Machines\u003c\/h2\u003e\n\u003cp\u003eUpgrade your 3D printer or CNC build with this high-quality \u003cstrong\u003eLM3UU Linear Bearing\u003c\/strong\u003e by \u003cstrong\u003eKande Bearings\u003c\/strong\u003e. Engineered for smooth, low-friction linear motion on 3mm shafts, this compact bearing delivers reliable performance in demanding applications including RepRap-style 3D printers, laser engravers, and precision motion systems.\u003c\/p\u003e\n\n\u003cp\u003eMade in Mainland China.\u003c\/p\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e LM3UU (SM3UU)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInner Diameter:\u003c\/strong\u003e 3mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOuter Diameter:\u003c\/strong\u003e 7mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength \/ Height:\u003c\/strong\u003e 10mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Dimensions:\u003c\/strong\u003e 3 × 7 × 10mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1 piece per lot\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Kande Bearings\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy Choose the LM3UU Linear Bearing?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e✅ \u003cstrong\u003ePrecision-ground races\u003c\/strong\u003e for smooth, consistent linear travel\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eCompact 3mm bore\u003c\/strong\u003e – ideal for lightweight 3D printer axes and small CNC rigs\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eLow friction design\u003c\/strong\u003e reduces wear on guide rods and extends component life\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eDrop-in replacement\u003c\/strong\u003e compatible with standard LM3UU \/ SM3UU housings\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eSuitable for 3D printers, robotics, automation, and DIY motion builds\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCompatible Applications\u003c\/h3\u003e\n\u003cp\u003eThis bearing is widely used in:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFDM \/ RepRap 3D printers (X, Y, and Z axis carriages)\u003c\/li\u003e\n  \u003cli\u003eDIY CNC machines and laser cutters\u003c\/li\u003e\n  \u003cli\u003eRobotic arms and automation equipment\u003c\/li\u003e\n  \u003cli\u003eOptical and precision measurement instruments\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/10pcs-durable-gold-blade-nut-metal-universal-trimmer-accessories-anti-loosening-line-left-hand-thread-replacement-parts-1\"\u003e10pcs Durable Gold Blade Nut Metal Universal Trimmer Accessories\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/stainless-steel-self-tapping-screws-m2-2-m4-8-phillips-wood-hinge\"\u003e10PCS Stainless Steel Self-Tapping Screws M2.2–M4.8 Phillips\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/12pcs-16mm-momentary-push-button-switch-1no-metal-2-pin-self-reset\"\u003e12pcs 16mm Momentary Push Button Switch 1NO Metal 2-Pin Self-Reset\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cem\u003eNote: The ruler and coin shown in product images are for size reference only and are not included with purchase.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/hand-power-tools\" target=\"_blank\" rel=\"noopener\"\u003eOSHA guidance on hand and power tools\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What is the shaft diameter compatible with the LM3UU linear bearing?\u003c\/h4\u003e\n\u003cp\u003eA: The LM3UU linear bearing has a 3mm inner diameter, meaning it is designed to fit precisely onto a 3mm smooth guide rod or shaft. This is a standard size commonly used in lightweight 3D printer axis assemblies and small CNC motion systems.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this LM3UU bearing a direct replacement for SM3UU bearings?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The LM3UU and SM3UU designations refer to the same standard bearing specification (3×7×10mm). This bearing is a direct drop-in replacement for either designation, fitting standard LM3\/SM3 linear bearing housings and pillow blocks.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How many bearings are included in this listing?\u003c\/h4\u003e\n\u003cp\u003eA: This listing includes 1 piece (1pc\/lot) of the LM3UU linear bearing. If you need multiple bearings for your build, simply adjust the quantity at checkout.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is the shaft diameter compatible with the LM3UU linear bearing?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The LM3UU linear bearing has a 3mm inner diameter, meaning it is designed to fit precisely onto a 3mm smooth guide rod or shaft. This is a standard size commonly used in lightweight 3D printer axis assemblies and small CNC motion systems.\"}}, {\"@type\": \"Question\", \"name\": \"Is this LM3UU bearing a direct replacement for SM3UU bearings?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. 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If you need multiple bearings for your build, simply adjust the quantity at checkout.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/68k0rh-yt.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Home page\", \"item\": \"https:\/\/68k0rh-yt.myshopify.com\/collections\/frontpage\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"LM3UU Linear Bearing 3x7x10mm for 3D Printers | Kande\", \"item\": \"https:\/\/68k0rh-yt.myshopify.com\/products\/lm3uu-linear-bearing-3x7x10mm-3d-printer-cnc\"}]}\u003c\/script\u003e","brand":"Richie's","offers":[{"title":"Default Title","offer_id":57606266847398,"sku":"32865639445-Default Title","price":5.67,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0785\/2182\/7494\/files\/HTB1i.NCKf5TBuNjSspcq6znGFXaJ.webp?v=1791728675","url":"https:\/\/richiesmart.com\/products\/lm3uu-linear-bearing-3x7x10mm-3d-printer-cnc","provider":"Richie's","version":"1.0","type":"link"}