{"product_id":"lmf6-50-uu-round-flange-linear-bushing-bearings","title":"LMF6 - 50 UU Round Flange Router Shaft Linear Bushing Bearings for Machine","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eLMF Round Flange Linear Bushing Bearings — Smooth, Precise Motion for CNC \u0026amp; Automation\u003c\/h2\u003e\n\u003cp\u003eWhen your CNC router, 3D printer, or linear motion system demands consistent, low-friction travel, a mismatched or worn bushing becomes the weakest link in your build. Engineers, makers, and machine builders who rely on repeatable axis movement need a round flange linear bushing that seats securely, resists side-load deflection, and holds tolerance across thousands of cycles. These LMF-UU series bearings are designed for exactly that application.\u003c\/p\u003e\n\u003cp\u003eEach LMF-UU round flange linear bushing is constructed from a steel outer shell with recirculating ball bearings and a polymer retainer, delivering smooth shaft travel with minimal play. Available in bore sizes from 6 mm (0.24 in) to 50 mm (1.97 in), with corresponding outer diameters from 12 mm to 80 mm and body lengths from 35 mm to 192 mm. The round flange face features bolt-circle mounting holes for secure, vibration-resistant installation on flat plates and extrusion-based frames.\u003c\/p\u003e\n\u003cp\u003eTypical use cases include X\/Y\/Z axis carriages on CNC routers and laser cutters, print-head and bed carriages on FDM 3D printers, and linear slide assemblies in pick-and-place or conveyor automation — anywhere a round flange linear bearing with UU double-seal configuration is specified for dust and debris exclusion.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003e🔩\u003c\/span\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Fits standard LMF-series round flange housings and smooth hardened steel shafts (6 mm – 50 mm diameter). Verify shaft diameter and flange bolt-circle pattern before ordering.\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These LMF Round Flange Linear Bushing Bearings\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-list\"\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🎯\u003c\/span\u003e\n\u003cstrong\u003eFull LMF6 – LMF50 Size Range\u003c\/strong\u003e\n\u003cp\u003eTwelve bore sizes from 6 mm to 50 mm cover the most common linear motion shaft standards, letting you source the exact fit for your axis without custom machining.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e\n\u003cstrong\u003eUU Double-Seal Configuration\u003c\/strong\u003e\n\u003cp\u003eDual contact seals on both ends of the bushing body retain grease and block fine particles, extending service life in dusty workshop and light industrial environments.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🏗️\u003c\/span\u003e\n\u003cstrong\u003eRound Flange Mounting Face\u003c\/strong\u003e\n\u003cp\u003eThe circular flange with symmetrical bolt holes allows bolt-down installation on flat plates, aluminum extrusions, and machined housings — no custom clamp blocks required.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚙️\u003c\/span\u003e\n\u003cstrong\u003eRecirculating Ball Bearing Design\u003c\/strong\u003e\n\u003cp\u003eBall circuits distribute load evenly across the shaft surface, reducing point wear and maintaining smooth, low-friction travel even under moderate radial loads.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\n\u003cstrong\u003eConsistent Dimensional Tolerances\u003c\/strong\u003e\n\u003cp\u003eOuter diameter and bore dimensions conform to LMF series standards, ensuring drop-in compatibility with existing housings and interchangeability across your machine fleet.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔧\u003c\/span\u003e\n\u003cstrong\u003eBroad Application Fit\u003c\/strong\u003e\n\u003cp\u003eSuited for CNC routers, 3D printer carriages, laser cutter gantries, and light automation slides — wherever a flanged linear bushing with shaft diameters from 6 mm to 50 mm is required.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ch2\u003e📐 Technical Specifications — LMF Round Flange Linear Bushing Bearings\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSeries\u003c\/th\u003e\n\u003ctd\u003eLMF-UU (Round Flange, Double Seal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Diameter Range\u003c\/th\u003e\n\u003ctd\u003e6 mm – 50 mm (0.24 in – 1.97 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOuter Diameter Range\u003c\/th\u003e\n\u003ctd\u003e12 mm – 80 mm (0.47 in – 3.15 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBody Length Range\u003c\/th\u003e\n\u003ctd\u003e35 mm – 192 mm (1.38 in – 7.56 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFlange Type\u003c\/th\u003e\n\u003ctd\u003eRound (circular bolt-circle)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSeal Type\u003c\/th\u003e\n\u003ctd\u003eUU — Double contact seal, both ends\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBearing Type\u003c\/th\u003e\n\u003ctd\u003eRecirculating ball linear bushing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOuter Shell Material\u003c\/th\u003e\n\u003ctd\u003eSteel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBall Material\u003c\/th\u003e\n\u003ctd\u003eSteel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRetainer Material\u003c\/th\u003e\n\u003ctd\u003ePolymer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLubrication\u003c\/th\u003e\n\u003ctd\u003ePre-greased (grease-port access: See 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\u003ctr\u003e\n\u003cth\u003eStatic Load Rating\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCompatible Shaft Type\u003c\/th\u003e\n\u003ctd\u003eHardened, ground smooth steel shaft (LMF series)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAvailable Sizes\u003c\/th\u003e\n\u003ctd\u003eLMF6, LMF8, LMF10, LMF12, LMF13, LMF16, LMF20, LMF25, LMF30, LMF35, LMF40, LMF50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\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 LMF size for my machine?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eMatch the bore diameter to your shaft diameter exactly — for example, LMF10 fits a 10 mm shaft. Then confirm the outer diameter and body length fit your housing or mounting plate. Refer to the size chart in the variant selector: each option lists bore × outer diameter × body length in millimeters.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat does the \"UU\" designation mean?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003e\"UU\" indicates a double-seal configuration — one contact seal on each end of the bushing body. This retains internal grease and provides a barrier against dust, chips, and fine debris, making these bearings suitable for open workshop environments and light CNC applications.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat shaft hardness is required for these linear bushings?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eLMF-UU linear bushings are designed for use with hardened and ground steel shafts, typically HRC 60 or above. Using unhardened or rough-surface shafts will accelerate ball and shaft wear and reduce service life significantly.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre these bearings corrosion-resistant?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThe standard LMF-UU series uses a steel outer shell and steel balls, which are not inherently corrosion-resistant. For humid or wet environments, apply a compatible bearing grease regularly and consider stainless-shaft pairings. If corrosion resistance is a primary requirement, contact us to confirm available options.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use these in a 3D printer or CNC router build?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes. LMF-UU round flange linear bushings are widely used in FDM 3D printer bed and carriage assemblies, CNC router gantry axes, and laser cutter head slides. The round flange allows direct bolt-down mounting to printed or machined plates without additional clamp hardware.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDo these come pre-lubricated?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes, these bushings are shipped pre-greased and ready to install. For extended service intervals or high-cycle applications, re-lubricate periodically with a lithium-based or equivalent bearing grease compatible with steel ball bearings.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between LMF and LM series linear bearings?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eLM (or LMB) series bearings have a plain cylindrical outer body and require a separate housing or clamp to mount. LMF series bearings add an integrated round flange, allowing direct bolt-down mounting without a separate housing — simplifying assembly and reducing part count in your build.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-cta\"\u003e\n🛒 Select your size above, then add to cart.\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I choose the right LMF size for my machine?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Match the bore diameter to your shaft diameter exactly — for example, LMF10 fits a 10 mm shaft. Then confirm the outer diameter and body length fit your housing or mounting plate. Refer to the size chart in the variant selector: each option lists bore × outer diameter × body length in millimeters.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What does the UU designation mean?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"UU indicates a double-seal configuration — one contact seal on each end of the bushing body. This retains internal grease and provides a barrier against dust, chips, and fine debris, making these bearings suitable for open workshop environments and light CNC applications.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What shaft hardness is required for these linear bushings?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"LMF-UU linear bushings are designed for use with hardened and ground steel shafts, typically HRC 60 or above. Using unhardened or rough-surface shafts will accelerate ball and shaft wear and reduce service life significantly.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Are these bearings corrosion-resistant?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The standard LMF-UU series uses a steel outer shell and steel balls, which are not inherently corrosion-resistant. For humid or wet environments, apply a compatible bearing grease regularly and consider stainless-shaft pairings.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I use these in a 3D printer or CNC router build?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. LMF-UU round flange linear bushings are widely used in FDM 3D printer bed and carriage assemblies, CNC router gantry axes, and laser cutter head slides. The round flange allows direct bolt-down mounting to printed or machined plates without additional clamp hardware.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Do these come pre-lubricated?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes, these bushings are shipped pre-greased and ready to install. For extended service intervals or high-cycle applications, re-lubricate periodically with a lithium-based or equivalent bearing grease compatible with steel ball bearings.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the difference between LMF and LM series linear bearings?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"LM series bearings have a plain cylindrical outer body and require a separate housing or clamp to mount. LMF series bearings add an integrated round flange, allowing direct bolt-down mounting without a separate housing — simplifying assembly and reducing part count in your build.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"HomeDIYer","offers":[{"title":"LMF6LUU(6 x 12 x 35mm)","offer_id":52448878854418,"sku":"ZXCBJT00641x1","price":3.86,"currency_code":"USD","in_stock":true},{"title":"LMF8LUU(8 x 15 x 45mm)","offer_id":52448878887186,"sku":"ZXCBJT00646x1","price":4.46,"currency_code":"USD","in_stock":true},{"title":"LMF10LUU(10 x 19 x 55mm)","offer_id":52448878919954,"sku":"ZXCBJT00640x1","price":5.47,"currency_code":"USD","in_stock":true},{"title":"LMF12LUU(12 x 21 x 57mm)","offer_id":52448878952722,"sku":"ZXCBJT00643x1","price":5.88,"currency_code":"USD","in_stock":true},{"title":"LMF13LUU(13 x 23 x 61mm)","offer_id":52448878985490,"sku":"ZXCBJT00642x1","price":7.47,"currency_code":"USD","in_stock":true},{"title":"LMF16LUU(16 x 28 x 70mm)","offer_id":52448879018258,"sku":"ZXCBJT00649x1","price":10.16,"currency_code":"USD","in_stock":true},{"title":"LMF20LUU(20 x 32 x 80mm)","offer_id":52448879051026,"sku":"ZXCBJT00647x1","price":13.21,"currency_code":"USD","in_stock":true},{"title":"LMF25LUU(25 x 40 x 112mm)","offer_id":52448879083794,"sku":"ZXCBJT00648x1","price":22.63,"currency_code":"USD","in_stock":true},{"title":"LMF30LUU(30 x 45 x 123mm)","offer_id":52448879116562,"sku":"ZXCBJT00645x1","price":25.55,"currency_code":"USD","in_stock":true},{"title":"LMF35LUU(35 x 52 x 135mm)","offer_id":52448879149330,"sku":"ZXCBJT00650x1","price":40.77,"currency_code":"USD","in_stock":true},{"title":"LMF40LUU(40 x 60 x 154mm)","offer_id":52448879182098,"sku":"ZXCBJT00644x1","price":55.69,"currency_code":"USD","in_stock":true},{"title":"LMF50LUU(50 x 80 x 192mm)","offer_id":52448879214866,"sku":"ZXCBJT00651x1","price":160.67,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/08c51e67-d9f3-459b-bfca-d7a07a003659.jpg?v=1783670387","url":"https:\/\/homediyer.com\/products\/lmf6-50-uu-round-flange-linear-bushing-bearings","provider":"HomeDIYer","version":"1.0","type":"link"}