{"product_id":"extended-flange-linear-bearings-lmh-luu-6mm-60mm-cnc-motion-bearing","title":"Extended Flange Linear Bearings LMH..LUU 6mm-60mm Inner Diam Motion Bearing CNC","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eExtended Flange Linear Bearings LMH..LUU — Precise Motion Control for CNC \u0026amp; Automation\u003c\/h2\u003e\n\u003cp\u003eWhen your CNC router, 3D printer, or linear actuator demands smooth, repeatable motion with zero slop, a poorly fitted bearing becomes the weakest link in your build. Engineers, makers, and machine builders who need reliable linear guidance choose the LMH..LUU extended flange series for its rigid mounting footprint and consistent bore tolerances across a wide size range.\u003c\/p\u003e\n\u003cp\u003eThese extended flange linear bearings feature a steel outer shell with recirculating ball elements and a flanged housing for bolt-through mounting. Available in bore diameters from 6 mm (0.24 in) to 60 mm (2.36 in), with outer diameters ranging from 12 mm to 90 mm and body lengths from 35 mm to 211 mm. The \"LUU\" designation indicates the extended (long) body version, providing a longer contact length for improved load distribution compared to standard LM..UU bearings.\u003c\/p\u003e\n\u003cp\u003eTypical applications include CNC router Z-axis carriages requiring extended travel support, 3D printer X\/Y gantry systems where reduced rocking moment is critical, and industrial linear actuator assemblies where flange-mount rigidity eliminates bracket fabrication. The extended body also suits pick-and-place robotics and laser cutter head assemblies that demand low-friction, high-cycle-life linear motion.\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\u003eCompatible with:\u003c\/strong\u003e Standard smooth round linear shafts (6 mm–60 mm diameter) — LM6UU through LM60UU shaft sizes. Fits SBR, TBR, and custom linear rail systems using matching shaft diameters.\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These Extended Flange Linear Bearings LMH LUU\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-list\"\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\n\u003cstrong\u003eExtended Body (LUU) Design\u003c\/strong\u003e\n\u003cp\u003eLonger contact length than standard LM..UU bearings distributes radial load over a greater surface area, reducing edge stress and improving moment resistance on cantilevered carriages.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔧\u003c\/span\u003e\n\u003cstrong\u003eFlanged Bolt-Through Mounting\u003c\/strong\u003e\n\u003cp\u003eThe LMH extended flange provides four bolt holes for direct, rigid attachment to carriage plates or machine frames — eliminating the need for separate bearing housings or clamp blocks.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚙️\u003c\/span\u003e\n\u003cstrong\u003eWide Size Range: 6 mm to 60 mm Bore\u003c\/strong\u003e\n\u003cp\u003eTwelve standard sizes from LMH6LUU to LMH60LUU cover the full spectrum of hobby CNC builds to industrial-grade linear motion systems, all sharing the same dimensional standard.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e\n\u003cstrong\u003eRecirculating Ball Element Construction\u003c\/strong\u003e\n\u003cp\u003eHardened steel ball circuits provide low-friction, smooth travel in both directions along the shaft axis, supporting dynamic loads typical of CNC and automation duty cycles.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🛡️\u003c\/span\u003e\n\u003cstrong\u003eSealed Ends for Contamination Resistance\u003c\/strong\u003e\n\u003cp\u003eEnd seals on both sides of the bearing body help retain lubrication and exclude dust and swarf — extending service life in 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\u003eSold Individually — Mix Sizes as Needed\u003c\/strong\u003e\n\u003cp\u003eEach listing is for one bearing unit. Select the exact model and quantity you need to match your project BOM without over-ordering.\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 — Extended Flange Linear Bearings LMH LUU\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBearing Series\u003c\/th\u003e\n\u003ctd\u003eLMH..LUU (Extended Flange, Long Body)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Diameter (ID) Range\u003c\/th\u003e\n\u003ctd\u003e6 mm – 60 mm (0.24 in – 2.36 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOuter Diameter (OD) Range\u003c\/th\u003e\n\u003ctd\u003e12 mm – 90 mm (0.47 in – 3.54 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBody Length Range\u003c\/th\u003e\n\u003ctd\u003e35 mm – 211 mm (1.38 in – 8.31 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAvailable Models\u003c\/th\u003e\n\u003ctd\u003eLMH6LUU, LMH8LUU, LMH10LUU, LMH12LUU, LMH16LUU, LMH20LUU, LMH25LUU, LMH30LUU, LMH35LUU, LMH40LUU, LMH50LUU, LMH60LUU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMounting Style\u003c\/th\u003e\n\u003ctd\u003eExtended flange with bolt-through holes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMotion Type\u003c\/th\u003e\n\u003ctd\u003eLinear (recirculating ball)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShaft Compatibility\u003c\/th\u003e\n\u003ctd\u003eSmooth round linear shaft, matching bore diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSealing\u003c\/th\u003e\n\u003ctd\u003eEnd seals (both sides)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLubrication\u003c\/th\u003e\n\u003ctd\u003eSee 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\u003eWeight per Unit\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eQuantity per Order\u003c\/th\u003e\n\u003ctd\u003e1 piece (select QTY above for multi-packs)\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 LMH..LUU size for my project?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eMatch the bearing bore (ID) to your linear shaft diameter. For example, if your shaft is 12 mm, select LMH12LUU (12×21×57 mm). The outer diameter and body length are fixed per model — confirm they fit your carriage pocket or mounting plate before ordering.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between LMH..LUU and standard LM..UU bearings?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eLM..UU is the standard-length round body bearing. LMH..LUU adds two features: an extended flange (LMH) for bolt-through mounting without a separate housing, and a longer body (LUU) that increases the ball contact length for better moment load resistance. Use LMH..LUU when you need rigid carriage attachment and reduced rocking on long travels.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre these bearings compatible with SBR and TBR linear rail shafts?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes — as long as the shaft diameter matches the bearing bore. SBR and TBR supported rail systems use standard shaft diameters (8 mm, 12 mm, 16 mm, 20 mm, etc.) that correspond directly to LMH..LUU model numbers. Always verify the shaft OD tolerance (typically h6) for proper fit.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow strong are these bearings — can they handle CNC cutting forces?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eLMH..LUU bearings are rated for both dynamic and static radial loads that vary by size. The extended body distributes load over more ball circuits than standard-length bearings, making them well-suited for CNC router carriages and gantry systems. For heavy-duty milling with significant lateral forces, consult the load rating for your specific model size.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDo these bearings resist rust and corrosion in workshop environments?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThe steel construction provides adequate corrosion resistance for typical indoor workshop use. End seals help keep moisture and swarf out of the ball circuit. For humid or wet environments, periodic re-lubrication with a suitable grease is recommended to maintain performance and extend service life.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use these in a 3D printer or laser cutter build?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eAbsolutely. LMH..LUU bearings are widely used in DIY 3D printer gantry systems and laser cutter head assemblies. The flanged body allows direct mounting to printed or machined carriage plates. Smaller sizes (LMH6LUU to LMH12LUU) are most common in desktop-scale machines, while larger sizes suit industrial-format builds.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow many bearings do I receive per order?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eEach order is for one (1) bearing unit by default. If your project requires multiple bearings (e.g., two per axis), simply select the quantity in the QTY option before adding to cart, or add multiple units to your order.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-cta\"\u003e\n🛒 Select your model size (ID × OD × Length) 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 LMH..LUU size for my project?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Match the bearing bore (ID) to your linear shaft diameter. For example, if your shaft is 12 mm, select LMH12LUU (12x21x57 mm). The outer diameter and body length are fixed per model — confirm they fit your carriage pocket or mounting plate before ordering.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the difference between LMH..LUU and standard LM..UU bearings?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"LM..UU is the standard-length round body bearing. LMH..LUU adds an extended flange (LMH) for bolt-through mounting and a longer body (LUU) for better moment load resistance. Use LMH..LUU when you need rigid carriage attachment and reduced rocking on long travels.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Are these bearings compatible with SBR and TBR linear rail shafts?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes — as long as the shaft diameter matches the bearing bore. SBR and TBR supported rail systems use standard shaft diameters that correspond directly to LMH..LUU model numbers. Always verify the shaft OD tolerance (typically h6) for proper fit.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How strong are these bearings — can they handle CNC cutting forces?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"LMH..LUU bearings are rated for both dynamic and static radial loads that vary by size. The extended body distributes load over more ball circuits than standard-length bearings, making them well-suited for CNC router carriages and gantry systems.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Do these bearings resist rust and corrosion in workshop environments?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The steel construction provides adequate corrosion resistance for typical indoor workshop use. End seals help keep moisture and swarf out of the ball circuit. Periodic re-lubrication with a suitable grease is recommended for humid environments.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I use these in a 3D printer or laser cutter build?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. LMH..LUU bearings are widely used in DIY 3D printer gantry systems and laser cutter head assemblies. The flanged body allows direct mounting to printed or machined carriage plates.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How many bearings do I receive per order?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Each order is for one (1) bearing unit by default. Select the quantity in the QTY option before adding to cart if your project requires multiple bearings.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"HomeDIYer","offers":[{"title":"LMH6LUU(6x12x35mm) \/ 1","offer_id":52448897663250,"sku":"GLFBLFFSHXJZC5187x1","price":4.38,"currency_code":"USD","in_stock":true},{"title":"LMH8LUU(8x15x45mm) \/ 1","offer_id":52448897696018,"sku":"GLFBLFFSHXJZC5188x1","price":4.94,"currency_code":"USD","in_stock":true},{"title":"LMH10LUU(10x19x55mm) \/ 1","offer_id":52448897728786,"sku":"GLFBLFFSHXJZC5189x1","price":6.61,"currency_code":"USD","in_stock":true},{"title":"LMH12LUU(12x21x57mm) \/ 1","offer_id":52448897761554,"sku":"GLFBLFFSHXJZC5190x1","price":7.3,"currency_code":"USD","in_stock":true},{"title":"LMH16LUU(16x28x70mm) \/ 1","offer_id":52448897794322,"sku":"GLFBLFFSHXJZC5192x1","price":11.08,"currency_code":"USD","in_stock":true},{"title":"LMH20LUU(20x32x80mm) \/ 1","offer_id":52448897827090,"sku":"GLFBLFFSHXJZC5193x1","price":13.67,"currency_code":"USD","in_stock":true},{"title":"LMH25LUU(25x40x112mm) \/ 1","offer_id":52448897859858,"sku":"GLFBLFFSHXJZC5194x1","price":24.07,"currency_code":"USD","in_stock":true},{"title":"LMH30LUU(30x45x123mm) \/ 1","offer_id":52448897892626,"sku":"GLFBLFFSHXJZC5195x1","price":29.38,"currency_code":"USD","in_stock":true},{"title":"LMH35LUU(35x52x135mm) \/ 1","offer_id":52448897925394,"sku":"GLFBLFFSHXJZC5196x1","price":40.58,"currency_code":"USD","in_stock":true},{"title":"LMH40LUU(40x60x154mm) \/ 1","offer_id":52448897958162,"sku":"GLFBLFFSHXJZC5197x1","price":58.17,"currency_code":"USD","in_stock":true},{"title":"LMH50LUU(50x80x192mm) \/ 1","offer_id":52448897990930,"sku":"GLFBLFFSHXJZC5198x1","price":183.44,"currency_code":"USD","in_stock":true},{"title":"LMH60LUU(60x90x211mm) \/ 1","offer_id":52448898023698,"sku":"GLFBLFFSHXJZC5199x1","price":227.91,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture1of5_c490681b-eb26-473a-9145-6af22b8a52e5.jpg?v=1783686725","url":"https:\/\/homediyer.com\/products\/extended-flange-linear-bearings-lmh-luu-6mm-60mm-cnc-motion-bearing","provider":"HomeDIYer","version":"1.0","type":"link"}