{"product_id":"uc-metric-self-lube-bearing-inserts-uc203-uc220","title":"UC Metric Self Lube Bearing Inserts Bearings UC 203 - UC 220","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\n  \u003cdiv class=\"hdiy-overview\"\u003e\n    \u003ch2\u003eUC Metric Self-Lube Bearing Inserts — Reliable Shaft Support from 17 mm to 95 mm\u003c\/h2\u003e\n    \u003cp\u003eWhen a seized or dry bearing brings your conveyor line, agricultural equipment, or industrial shaft assembly to a halt, downtime costs money. UC metric self-lube bearing inserts are engineered for engineers, maintenance technicians, and serious DIY builders who need a drop-in replacement or new-build solution that keeps running with minimal intervention.\u003c\/p\u003e\n    \u003cp\u003eEach UC insert bearing consists of a spherical outer ring and an inner ring with a set-screw locking collar, manufactured from cast iron housing with a chrome steel (GCr15) inner ring. Available in models UC203 through UC220, covering shaft diameters from 17 mm (0.67 in) to 95 mm (3.74 in). The self-lubricating grease reservoir within the sealed housing extends re-lubrication intervals significantly.\u003c\/p\u003e\n    \u003cp\u003eTypical use cases include conveyor roller shaft mounting, agricultural PTO and auger shaft support, and light-to-medium industrial gearbox pillow-block replacement — all scenarios where a UC metric self-lube bearing insert delivers consistent radial load capacity with misalignment tolerance.\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 UC-series pillow block housings (UCP, UCFL, UCFC, UCT). Shaft diameter matches selected model — UC203 = 17 mm, UC204 = 20 mm … UC220 = 95 mm. Verify housing bore before ordering.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-features\"\u003e\n    \u003ch2\u003e✅ Key Features of These UC Metric Self-Lube Bearing Inserts\u003c\/h2\u003e\n    \u003cdiv class=\"hdiy-list\"\u003e\n      \u003cdiv\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e🛡️\u003c\/span\u003e\n        \u003cstrong\u003eSelf-Lubricating Design\u003c\/strong\u003e\n        \u003cp\u003eIntegrated grease reservoir reduces maintenance frequency and extends service life in hard-to-reach shaft locations.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\n        \u003cstrong\u003eWide Size Range\u003c\/strong\u003e\n        \u003cp\u003e17 models from UC203 (17 mm) to UC220 (95 mm) cover the most common metric shaft diameters in a single product line.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e⚙️\u003c\/span\u003e\n        \u003cstrong\u003eSet-Screw Locking Collar\u003c\/strong\u003e\n        \u003cp\u003eDual set-screw inner ring locks securely onto the shaft, preventing axial creep under dynamic radial loads.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e\n        \u003cstrong\u003eSpherical Outer Ring\u003c\/strong\u003e\n        \u003cp\u003eAllows up to ±2° angular misalignment, compensating for minor shaft deflection or housing misalignment during installation.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e🏭\u003c\/span\u003e\n        \u003cstrong\u003eCast Iron Housing + GCr15 Steel Inner Ring\u003c\/strong\u003e\n        \u003cp\u003eRobust material pairing delivers solid radial load capacity suitable for conveyors, fans, and agricultural machinery.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e🔒\u003c\/span\u003e\n        \u003cstrong\u003eDouble-Lip Rubber Seals\u003c\/strong\u003e\n        \u003cp\u003eRS-type seals on both sides keep grease in and contaminants — dust, moisture, and debris — out for cleaner operation.\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 — UC Insert Bearings\u003c\/h2\u003e\n    \u003ctable\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003cth\u003eBearing Series\u003c\/th\u003e\n\u003ctd\u003eUC (Insert Bearing)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eModels Available\u003c\/th\u003e\n\u003ctd\u003eUC203 · UC204 · UC205 · UC206 · UC207 · UC208 · UC209 · UC210 · UC211 · UC212 · UC213 · UC214 · UC215 · UC216 · UC217 · UC218 · UC220\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eShaft Diameter Range\u003c\/th\u003e\n\u003ctd\u003e17 mm – 95 mm (0.67 in – 3.74 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eInner Ring Material\u003c\/th\u003e\n\u003ctd\u003eChrome Steel (GCr15)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eHousing Material\u003c\/th\u003e\n\u003ctd\u003eCast Iron\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eSeal Type\u003c\/th\u003e\n\u003ctd\u003eDouble-Lip Rubber Seal (RS)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eLocking Method\u003c\/th\u003e\n\u003ctd\u003eSet-Screw (dual)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eMisalignment Tolerance\u003c\/th\u003e\n\u003ctd\u003e±2°\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eLubrication\u003c\/th\u003e\n\u003ctd\u003ePre-greased \/ Self-lubricating\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eOuter Ring Shape\u003c\/th\u003e\n\u003ctd\u003eSpherical\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eLoad Type\u003c\/th\u003e\n\u003ctd\u003eRadial\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eHousing Compatibility\u003c\/th\u003e\n\u003ctd\u003eUCP \/ UCFL \/ UCFC \/ UCT series\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eWeight\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 pc (per variant)\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\n    \u003cdetails\u003e\n      \u003csummary\u003eHow do I choose the right UC bearing model for my shaft?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eMatch the model number to your shaft diameter: UC203 = 17 mm, UC204 = 20 mm, UC205 = 25 mm, UC206 = 30 mm, UC207 = 35 mm, UC208 = 40 mm, UC209 = 45 mm, UC210 = 50 mm, UC211 = 55 mm, UC212 = 60 mm, UC213 = 65 mm, UC214 = 70 mm, UC215 = 75 mm, UC216 = 80 mm, UC217 = 85 mm, UC218 = 90 mm, UC220 = 95 mm. Select the model that matches your shaft's outer diameter exactly.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWill these bearing inserts fit my existing pillow block housing?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes — UC insert bearings are designed to fit standard UC-series housings including UCP (pillow block), UCFL (flange), UCFC (cartridge), and UCT (take-up) types. Confirm the housing bore matches the outer diameter of the selected UC model before ordering.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eAre these bearings suitable for outdoor or wet environments?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThe double-lip rubber seals (RS type) provide good protection against moisture and dust ingress, making them suitable for light outdoor and agricultural applications. For heavily corrosive or submerged environments, consider stainless steel variants or additional external sealing.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eDo I need to add grease before installation?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eNo — each bearing insert comes pre-greased from the factory. The self-lubricating design extends re-greasing intervals. For high-speed or high-temperature applications, verify the grease specification matches your operating conditions and re-grease via the housing grease fitting as needed.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat radial load can these UC bearing inserts handle?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eDynamic radial load capacity varies by model size. As a general guide, smaller models (UC203–UC205) handle approximately 6–11 kN dynamic load, while larger models (UC215–UC220) can handle 30–50 kN. For precise load ratings, refer to the model-specific datasheet or contact us to confirm.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eCan I use these bearings on a keyed shaft?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eStandard UC insert bearings use set-screw locking and are designed for smooth shafts. If your shaft has a keyway, the set screw can be positioned over the keyway for additional retention, but ensure the shaft tolerance is within h6–j6 for a proper fit. For keyed-shaft-specific designs, look for UK-series bearings.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat is the difference between UC203 and UC204 if both fit similar shaft sizes?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eUC203 is designed for a 17 mm shaft while UC204 is for a 20 mm shaft — they are not interchangeable. Each model number corresponds to a specific bore diameter. Always select the model that exactly matches your shaft diameter to ensure proper fit and load transfer.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-cta\"\u003e\n    🛒 Select your model (shaft diameter) 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 UC bearing model for my shaft?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Match the model number to your shaft diameter: UC203 = 17 mm, UC204 = 20 mm, UC205 = 25 mm, UC206 = 30 mm, UC207 = 35 mm, UC208 = 40 mm, UC209 = 45 mm, UC210 = 50 mm, UC211 = 55 mm, UC212 = 60 mm, UC213 = 65 mm, UC214 = 70 mm, UC215 = 75 mm, UC216 = 80 mm, UC217 = 85 mm, UC218 = 90 mm, UC220 = 95 mm.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Will these bearing inserts fit my existing pillow block housing?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes — UC insert bearings fit standard UC-series housings including UCP, UCFL, UCFC, and UCT types. Confirm the housing bore matches the outer diameter of the selected UC model before ordering.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Are these bearings suitable for outdoor or wet environments?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The double-lip rubber seals (RS type) provide good protection against moisture and dust, suitable for light outdoor and agricultural applications. For heavily corrosive environments, consider stainless steel variants or additional sealing.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Do I need to add grease before installation?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"No — each bearing insert comes pre-greased. The self-lubricating design extends re-greasing intervals. Re-grease via the housing grease fitting as needed for high-speed or high-temperature applications.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What radial load can these UC bearing inserts handle?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Dynamic radial load capacity varies by model. Smaller models (UC203–UC205) handle approximately 6–11 kN; larger models (UC215–UC220) can handle 30–50 kN. Contact us for precise load ratings.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I use these bearings on a keyed shaft?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Standard UC insert bearings use set-screw locking for smooth shafts. The set screw can be positioned over a keyway for additional retention. For keyed-shaft-specific designs, look for UK-series bearings.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the difference between UC203 and UC204?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"UC203 fits a 17 mm shaft; UC204 fits a 20 mm shaft. They are not interchangeable. Always select the model that exactly matches your shaft diameter.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"HomeDIYer","offers":[{"title":"UC203(17mm) \/ 1","offer_id":52448866468114,"sku":"GLFBLFFSKDLJX0501x1","price":9.34,"currency_code":"USD","in_stock":true},{"title":"UC204(20mm) \/ 1","offer_id":52448866500882,"sku":"GLFBLFFSKDLJX0502x1","price":8.35,"currency_code":"USD","in_stock":true},{"title":"UC205(25mm) \/ 1","offer_id":52448866533650,"sku":"GLFBLFFSKDLJX0503x1","price":10.65,"currency_code":"USD","in_stock":true},{"title":"UC206(30mm) \/ 1","offer_id":52448866566418,"sku":"GLFBLFFSKDLJX0504x1","price":15.68,"currency_code":"USD","in_stock":true},{"title":"UC207(35mm) \/ 1","offer_id":52448866599186,"sku":"GLFBLFFSKDLJX0505x1","price":21.5,"currency_code":"USD","in_stock":true},{"title":"UC208(40mm) \/ 1","offer_id":52448866631954,"sku":"GLFBLFFSKDLJX0506x1","price":28.42,"currency_code":"USD","in_stock":true},{"title":"UC209(45mm) \/ 1","offer_id":52448866664722,"sku":"GLFBLFFSKDLJX0507x1","price":30.61,"currency_code":"USD","in_stock":true},{"title":"UC210(50mm) \/ 1","offer_id":52448866697490,"sku":"GLFBLFFSKDLJX0508x1","price":33.12,"currency_code":"USD","in_stock":true},{"title":"UC211(55mm) \/ 1","offer_id":52448866730258,"sku":"GLFBLFFSKDLJX0509x1","price":44.51,"currency_code":"USD","in_stock":true},{"title":"UC212(60mm) \/ 1","offer_id":52448866763026,"sku":"GLFBLFFSKDLJX0510x1","price":57.79,"currency_code":"USD","in_stock":true},{"title":"UC213(65mm) \/ 1","offer_id":52448866795794,"sku":"GLFBLFFSKDLJX0511x1","price":107.44,"currency_code":"USD","in_stock":true},{"title":"UC214(70mm) \/ 1","offer_id":52448866828562,"sku":"GLFBLFFSKDLJX0512x1","price":116.62,"currency_code":"USD","in_stock":true},{"title":"UC215(75mm) \/ 1","offer_id":52448866861330,"sku":"GLFBLFFSKDLJX0513x1","price":127.06,"currency_code":"USD","in_stock":true},{"title":"UC216(80mm) \/ 1","offer_id":52448866894098,"sku":"GLFBLFFSKDLJX0514x1","price":141.63,"currency_code":"USD","in_stock":true},{"title":"UC217(85mm) \/ 1","offer_id":52448866926866,"sku":"GLFBLFFSKDLJX0515x1","price":165.61,"currency_code":"USD","in_stock":true},{"title":"UC218(90mm) \/ 1","offer_id":52448866959634,"sku":"GLFBLFFSKDLJX0516x1","price":196.94,"currency_code":"USD","in_stock":true},{"title":"UC220(95mm) \/ 1","offer_id":52448866992402,"sku":"GLFBLFFSKDLJX0517x1","price":229.08,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture1of3_52499483-2545-4213-8446-be1593a00697.jpg?v=1783668846","url":"https:\/\/homediyer.com\/products\/uc-metric-self-lube-bearing-inserts-uc203-uc220","provider":"HomeDIYer","version":"1.0","type":"link"}