{"product_id":"uc-metric-zirconia-ceramics-self-lube-bearing-inserts-uc203-uc210","title":"UC Metric Zirconia Ceramics Self Lube Bearing Inserts Bearings UC 203 - UC 210","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\n  \u003cdiv class=\"hdiy-overview\"\u003e\n    \u003ch2\u003eUC Metric Zirconia Ceramic Self-Lube Bearing Inserts — Corrosion-Resistant, Maintenance-Free Performance\u003c\/h2\u003e\n    \u003cp\u003eWhen standard steel bearings corrode, seize, or demand constant re-greasing in wet, chemical, or high-temperature environments, engineers and makers pay the price in downtime and maintenance costs. Whether you are building food-processing equipment, marine machinery, agricultural conveyors, or precision CNC fixtures, you need a bearing insert that simply keeps running. These UC-series zirconia ceramic self-lubricating bearing inserts are engineered for exactly those demanding conditions.\u003c\/p\u003e\n    \u003cp\u003eEach insert is constructed from zirconia ceramic (ZrO₂) rolling elements paired with a stainless or corrosion-resistant housing, delivering a self-contained, grease-free bearing unit. Available in UC203 through UC210, the bore diameters range from 17 mm (0.67 in) to 50 mm (1.97 in), covering the most common metric shaft sizes used in industrial and maker applications. The self-lubricating ceramic construction eliminates the need for external grease fittings.\u003c\/p\u003e\n    \u003cp\u003eTypical use cases include food and beverage conveyor lines where washdown cycles make steel bearings impractical, marine deck equipment exposed to saltwater spray, chemical processing pumps requiring non-reactive bearing materials, and CNC router or laser-cutter axis supports where low friction and dimensional stability are critical for repeatability.\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    Compatible with standard UC-series pillow block and flange housings (P2xx, F2xx, FL2xx, FS2xx). Fits metric shafts from 17 mm to 50 mm. Set-screw locking on inner ring.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-features\"\u003e\n    \u003ch2\u003e✅ Key Features of These UC Zirconia Ceramic 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\u003eZirconia Ceramic Rolling Elements\u003c\/strong\u003e — ZrO₂ balls offer outstanding chemical resistance, withstanding acids, alkalis, and saltwater that rapidly degrade standard steel bearings.\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e🛢️\u003c\/span\u003e\n        \u003cstrong\u003eSelf-Lubricating Design\u003c\/strong\u003e — Integrated solid lubricant eliminates the need for periodic greasing, reducing maintenance intervals and preventing contamination in food-safe or cleanroom environments.\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\n        \u003cstrong\u003eFull UC203–UC210 Range\u003c\/strong\u003e — Eight bore sizes from 17 mm to 50 mm (0.67\"–1.97\") cover the most common metric shaft diameters, with interchangeable dimensions across standard UC-series housings.\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e🌡️\u003c\/span\u003e\n        \u003cstrong\u003eWide Operating Temperature Range\u003c\/strong\u003e — Ceramic construction maintains dimensional stability across a broad temperature range, typically –40 °C to +200 °C (–40 °F to +392 °F), outperforming polymer alternatives at elevated temperatures.\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e⚙️\u003c\/span\u003e\n        \u003cstrong\u003eSet-Screw Inner Ring Locking\u003c\/strong\u003e — Dual set screws on the inner ring provide secure shaft retention without requiring keyways or press fits, simplifying installation and shaft replacement.\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e\n        \u003cstrong\u003eDrop-In Replacement Geometry\u003c\/strong\u003e — Conforms to standard UC-series dimensional specifications, making these a direct drop-in replacement for existing steel or stainless insert bearings in P2xx\/F2xx housings.\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 Zirconia Ceramic Insert Bearings\u003c\/h2\u003e\n    \u003ctable\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003cth\u003eSeries\u003c\/th\u003e\n\u003ctd\u003eUC203 \/ UC204 \/ UC205 \/ UC206 \/ UC207 \/ UC208 \/ UC209 \/ UC210\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eBore Diameter (Inner Diameter)\u003c\/th\u003e\n\u003ctd\u003e17 mm – 50 mm (0.67\" – 1.97\"); see variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eRolling Element Material\u003c\/th\u003e\n\u003ctd\u003eZirconia Ceramic (ZrO₂)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eLubrication Type\u003c\/th\u003e\n\u003ctd\u003eSelf-lubricating (grease-free)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eLocking Method\u003c\/th\u003e\n\u003ctd\u003eSet screw on inner ring\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eHousing Compatibility\u003c\/th\u003e\n\u003ctd\u003eStandard UC-series (P2xx, F2xx, FL2xx, FS2xx)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eOperating Temperature\u003c\/th\u003e\n\u003ctd\u003eTypically –40 °C to +200 °C (–40 °F to +392 °F)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eCorrosion Resistance\u003c\/th\u003e\n\u003ctd\u003eResistant to acids, alkalis, and saltwater\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eOuter Diameter\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eWidth\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eDynamic Load Rating (C)\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eStatic Load Rating (C₀)\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 PCS\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 select the correct 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 fits 17 mm shafts, UC204 fits 20 mm, UC205 fits 25 mm, UC206 fits 30 mm, UC207 fits 35 mm, UC208 fits 40 mm, UC209 fits 45 mm, and UC210 fits 50 mm. Select the variant above that corresponds to your shaft size. All models share standard UC-series outer dimensions and are interchangeable with P2xx and F2xx housings.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eAre these bearing inserts strong enough for heavy radial loads?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eZirconia ceramic bearing inserts carry radial and axial loads comparable to equivalent-size steel UC bearings in most light-to-medium duty applications. The ceramic rolling elements have high compressive strength and hardness (typically HV 1200+). For very heavy shock loads or extreme radial forces, consult the specific dynamic load rating (C) for your chosen model size, which varies by bore diameter.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eHow corrosion-resistant are zirconia ceramic bearing inserts?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eZirconia ceramic (ZrO₂) is highly resistant to most acids, alkalis, chlorides, and saltwater — environments that rapidly corrode standard carbon steel or even 440C stainless steel bearings. This makes them well-suited for food processing washdown, marine, chemical, and outdoor agricultural applications where moisture and chemical exposure are unavoidable.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eDo these inserts fit standard pillow block and flange housings?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes. These UC-series inserts conform to standard dimensional specifications and are designed as drop-in replacements for existing UC-series inserts in P2xx pillow block housings, F2xx four-bolt flange housings, FL2xx two-bolt flange housings, and FS2xx three-bolt flange housings. No housing modification is required.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eDo I need to grease or maintain these bearing inserts?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eNo. The self-lubricating design incorporates a solid lubricant that eliminates the need for external grease fittings or periodic re-greasing. This is particularly valuable in food-safe environments where grease contamination is a concern, or in hard-to-reach locations where regular maintenance is impractical.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat temperature range can these ceramic bearing inserts handle?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eZirconia ceramic rolling elements maintain their dimensional stability and mechanical properties across a wide temperature range, typically from –40 °C to +200 °C (–40 °F to +392 °F). This makes them suitable for both cold-storage conveyor systems and moderately elevated-temperature industrial machinery, outperforming polymer or PTFE-based self-lubricating alternatives at higher temperatures.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eHow do I install or replace a UC insert bearing?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eSlide the insert onto the shaft until it reaches the desired position. Tighten the set screws on the inner ring against the shaft using the appropriate hex key — do not overtighten, as this can deform the shaft. Seat the insert into the housing bore and secure the housing to its mounting surface. No press fit or keyway is required for standard installations.\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 item model and inner 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 select the correct UC bearing model for my shaft?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Match the model number to your shaft diameter: UC203 fits 17 mm shafts, UC204 fits 20 mm, UC205 fits 25 mm, UC206 fits 30 mm, UC207 fits 35 mm, UC208 fits 40 mm, UC209 fits 45 mm, and UC210 fits 50 mm. All models share standard UC-series outer dimensions and are interchangeable with P2xx and F2xx housings.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Are these bearing inserts strong enough for heavy radial loads?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Zirconia ceramic bearing inserts carry radial and axial loads comparable to equivalent-size steel UC bearings in most light-to-medium duty applications. The ceramic rolling elements have high compressive strength and hardness (typically HV 1200+).\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How corrosion-resistant are zirconia ceramic bearing inserts?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Zirconia ceramic (ZrO₂) is highly resistant to most acids, alkalis, chlorides, and saltwater, making them well-suited for food processing washdown, marine, chemical, and outdoor agricultural applications.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Do these inserts fit standard pillow block and flange housings?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. These UC-series inserts conform to standard dimensional specifications and are designed as drop-in replacements in P2xx, F2xx, FL2xx, and FS2xx housings. No housing modification is required.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Do I need to grease or maintain these bearing inserts?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"No. The self-lubricating design incorporates a solid lubricant that eliminates the need for external grease fittings or periodic re-greasing.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What temperature range can these ceramic bearing inserts handle?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Zirconia ceramic rolling elements maintain stability across typically –40 °C to +200 °C (–40 °F to +392 °F), suitable for cold-storage conveyors and moderately elevated-temperature industrial machinery.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I install or replace a UC insert bearing?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Slide the insert onto the shaft, tighten the set screws on the inner ring with the appropriate hex key, seat the insert into the housing bore, and secure the housing. No press fit or keyway is required for standard installations.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"HomeDIYer","offers":[{"title":"UC203 \/ 17mm \/ 1 PCS","offer_id":52448866205970,"sku":"GYJLTGLBZSJ057029x1","price":109.21,"currency_code":"USD","in_stock":true},{"title":"UC204 \/ 20mm \/ 1 PCS","offer_id":52448866238738,"sku":"GYJLTGLBZSJ057030x1","price":70.69,"currency_code":"USD","in_stock":true},{"title":"UC205 \/ 25mm \/ 1 PCS","offer_id":52448866271506,"sku":"GYJLTGLBZSJ057031x1","price":85.54,"currency_code":"USD","in_stock":true},{"title":"UC206 \/ 30mm \/ 1 PCS","offer_id":52448866304274,"sku":"GYJLTGLBZSJ057032x1","price":136.41,"currency_code":"USD","in_stock":true},{"title":"UC207 \/ 35mm \/ 1 PCS","offer_id":52448866337042,"sku":"GYJLTGLBZSJ057033x1","price":258.92,"currency_code":"USD","in_stock":true},{"title":"UC208 \/ 40mm \/ 1 PCS","offer_id":52448866369810,"sku":"GYJLTGLBZSJ057034x1","price":354.12,"currency_code":"USD","in_stock":true},{"title":"UC209 \/ 45mm \/ 1 PCS","offer_id":52448866402578,"sku":"GYJLTGLBZSJ057035x1","price":404.44,"currency_code":"USD","in_stock":true},{"title":"UC210 \/ 50mm \/ 1 PCS","offer_id":52448866435346,"sku":"GYJLTGLBZSJ057036x1","price":463.46,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Main-01_2d83dc90-3989-49d1-a261-fe755e0b9ab4.jpg?v=1783668835","url":"https:\/\/homediyer.com\/products\/uc-metric-zirconia-ceramics-self-lube-bearing-inserts-uc203-uc210","provider":"HomeDIYer","version":"1.0","type":"link"}