{"product_id":"ucph204-210-pillow-block-mounted-bearings-bore-20-50mm","title":"UCPH204 205 206 207 208 09 10 Bearing BORE 20-50mm Pillow Block Mounted Bearings","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\n  \u003cdiv class=\"hdiy-overview\"\u003e\n    \u003ch2\u003eUCPH Pillow Block Mounted Bearings — Reliable Shaft Support for Industrial \u0026amp; DIY Applications\u003c\/h2\u003e\n    \u003cp\u003eWhen a misaligned shaft or an undersized bearing causes unexpected downtime on your conveyor, fan assembly, or agricultural equipment, the cost adds up fast. Engineers, fabricators, and serious DIYers who need a dependable, drop-in bearing solution turn to UCPH-series pillow block mounted bearings — a workhorse design built to handle radial loads, minor shaft misalignment, and continuous rotation without complaint.\u003c\/p\u003e\n    \u003cp\u003eEach unit pairs a cast iron two-bolt pillow block housing with a self-aligning ball bearing insert (UC-series). Available bore sizes span 20 mm to 50 mm (approximately 0.79 in to 1.97 in), covering UCPH204 through UCPH210. The housing is finished with a protective coating to resist everyday workshop and light-outdoor exposure, while the bearing insert is pre-greased and sealed for maintenance-reduced operation.\u003c\/p\u003e\n    \u003cp\u003eTypical use cases include conveyor roller shaft support, electric motor and pump mounting, agricultural machinery drive shafts, and CNC or woodworking machine spindle support — anywhere a two-bolt pillow block bearing with a specific bore diameter is required for secure, low-vibration shaft retention.\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 bearing inserts (UC204–UC210). Two-bolt mounting pattern. Verify bore size and bolt-hole spacing against your shaft and frame before ordering.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-features\"\u003e\n    \u003ch2\u003e✅ Key Features of These UCPH Pillow Block Mounted Bearings\u003c\/h2\u003e\n    \u003cdiv class=\"hdiy-list\"\u003e\n      \u003cdiv\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e🏗️\u003c\/span\u003e\n        \u003cstrong\u003eCast Iron Housing\u003c\/strong\u003e\n        \u003cp\u003eRobust cast iron construction provides structural rigidity and vibration damping, keeping the bearing insert firmly seated under continuous radial load.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e\n        \u003cstrong\u003eSelf-Aligning Ball Bearing Insert\u003c\/strong\u003e\n        \u003cp\u003eThe UC-series insert accommodates minor shaft misalignment (typically ±2°–3°), reducing stress on the shaft and extending service life in real-world installations.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e📏\u003c\/span\u003e\n        \u003cstrong\u003eWide Bore Range: 20–50 mm\u003c\/strong\u003e\n        \u003cp\u003eSeven size options from UCPH204 (20 mm bore) to UCPH210 (50 mm bore) let you match the bearing precisely to your shaft diameter without adapters.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e🛡️\u003c\/span\u003e\n        \u003cstrong\u003ePre-Greased \u0026amp; Sealed Insert\u003c\/strong\u003e\n        \u003cp\u003eFactory-applied grease and dual-lip seals minimize maintenance intervals and protect the rolling elements from dust and light moisture ingress.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e⚙️\u003c\/span\u003e\n        \u003cstrong\u003eTwo-Bolt Mounting Pattern\u003c\/strong\u003e\n        \u003cp\u003eStandard two-bolt base allows straightforward bolt-down installation on steel frames, wooden beams, or fabricated brackets with common hardware.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e🔧\u003c\/span\u003e\n        \u003cstrong\u003eSet-Screw Shaft Locking\u003c\/strong\u003e\n        \u003cp\u003eThe UC insert includes a set-screw collar for positive shaft retention, preventing axial creep during operation without requiring a machined shaft shoulder.\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 — UCPH Pillow Block Mounted Bearings\u003c\/h2\u003e\n    \u003ctable\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003cth\u003eBearing Series\u003c\/th\u003e\n\u003ctd\u003eUCPH204 \/ UCPH205 \/ UCPH206 \/ UCPH207 \/ UCPH208 \/ UCPH209 \/ UCPH210\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eBore Diameter\u003c\/th\u003e\n\u003ctd\u003e20 mm \/ 25 mm \/ 30 mm \/ 35 mm \/ 40 mm \/ 45 mm \/ 50 mm (0.79–1.97 in)\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\u003eInsert Type\u003c\/th\u003e\n\u003ctd\u003eUC-series self-aligning ball bearing\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eMounting Bolts\u003c\/th\u003e\n\u003ctd\u003e2-bolt base\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eShaft Locking\u003c\/th\u003e\n\u003ctd\u003eSet-screw collar\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eLubrication\u003c\/th\u003e\n\u003ctd\u003ePre-greased, re-greaseable via grease fitting\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eSealing\u003c\/th\u003e\n\u003ctd\u003eDual-lip rubber seal\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eHousing Finish\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eOperating Temperature\u003c\/th\u003e\n\u003ctd\u003eTypically −10°C to +110°C (14°F to 230°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eMisalignment Tolerance\u003c\/th\u003e\n\u003ctd\u003eTypically ±2°–3°\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eBolt-Hole Spacing\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eOverall Housing Dimensions\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      \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 correct UCPH bearing size for my shaft?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eMatch the bore diameter to your shaft's outer diameter. UCPH204 fits a 20 mm shaft, UCPH205 fits 25 mm, UCPH206 fits 30 mm, UCPH207 fits 35 mm, UCPH208 fits 40 mm, UCPH209 fits 45 mm, and UCPH210 fits 50 mm. Select the variant above that corresponds to your shaft size.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat radial load can these pillow block bearings handle?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eDynamic load capacity varies by size — larger bore variants carry higher loads. As a general guide, UC204–UC210 inserts typically handle dynamic radial loads in the range of 12–30 kN depending on the specific model. Consult the bearing datasheet for your selected size for precise load ratings and speed limits.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eAre these bearings corrosion-resistant for outdoor or wet environments?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThe cast iron housing has a protective coating suitable for dry indoor and light-exposure environments. For consistently wet, washdown, or corrosive conditions, consider stainless steel or polymer-housed alternatives. The dual-lip seals do provide protection against dust and light moisture splash.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eCan I use these bearings with a shaft that has minor misalignment?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes. The UC-series self-aligning ball bearing insert accommodates angular misalignment of approximately ±2°–3°, making it suitable for installations where perfect shaft-to-housing alignment is difficult to achieve. Exceeding this range will reduce bearing life.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eDo these bearings require regular greasing?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThe inserts are pre-greased at the factory and sealed for reduced-maintenance operation. However, they include a grease fitting (zerk fitting) so you can re-grease them periodically in demanding or high-temperature applications to extend service life.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat is the difference between UCPH and UCF or UCFL pillow block housings?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eUCPH designates a standard two-bolt pillow block (side-mount base). UCF refers to a four-bolt square flange housing, and UCFL refers to a two-bolt oval flange housing. Choose UCPH when you need a base-mounted, bolt-down configuration on a horizontal or angled surface.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eAre replacement UC insert bearings available separately?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes — UC204 through UC210 insert bearings are widely available as standalone components. If the housing remains undamaged, you can replace only the insert, which is a cost-effective maintenance option for high-cycle applications.\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 \u003cstrong\u003eBearing Size\u003c\/strong\u003e 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 correct UCPH bearing size for my shaft?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Match the bore diameter to your shaft's outer diameter. UCPH204 fits a 20 mm shaft, UCPH205 fits 25 mm, UCPH206 fits 30 mm, UCPH207 fits 35 mm, UCPH208 fits 40 mm, UCPH209 fits 45 mm, and UCPH210 fits 50 mm.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What radial load can these pillow block bearings handle?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Dynamic load capacity varies by size. UC204–UC210 inserts typically handle dynamic radial loads in the range of 12–30 kN depending on the specific model.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Are these bearings corrosion-resistant for outdoor or wet environments?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The cast iron housing has a protective coating suitable for dry indoor and light-exposure environments. The dual-lip seals provide protection against dust and light moisture splash.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I use these bearings with a shaft that has minor misalignment?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. The UC-series self-aligning ball bearing insert accommodates angular misalignment of approximately ±2°–3°, suitable for installations where perfect alignment is difficult to achieve.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Do these bearings require regular greasing?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The inserts are pre-greased and sealed for reduced-maintenance operation, but include a grease fitting so you can re-grease them periodically in demanding applications.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the difference between UCPH and UCF or UCFL pillow block housings?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"UCPH is a standard two-bolt pillow block (side-mount base). UCF is a four-bolt square flange housing, and UCFL is a two-bolt oval flange housing.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Are replacement UC insert bearings available separately?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes — UC204 through UC210 insert bearings are widely available as standalone components, allowing cost-effective maintenance by replacing only the insert.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"HomeDIYer","offers":[{"title":"UCPH204 BORE 20mm","offer_id":52448905068818,"sku":"LXDSHXJZC0316x1","price":113.49,"currency_code":"USD","in_stock":true},{"title":"UCPH205 BORE 25mm","offer_id":52448905101586,"sku":"LXDSHXJZC0317x1","price":143.68,"currency_code":"USD","in_stock":true},{"title":"UCPH206 BORE 30mm","offer_id":52448905134354,"sku":"LXDSHXJZC0318x1","price":190.79,"currency_code":"USD","in_stock":true},{"title":"UCPH207 BORE 35mm","offer_id":52448905167122,"sku":"LXDSHXJZC0319x1","price":249.76,"currency_code":"USD","in_stock":true},{"title":"UCPH208 BORE 40mm","offer_id":52448905199890,"sku":"LXDSHXJZC0320x1","price":319.72,"currency_code":"USD","in_stock":true},{"title":"UCPH209 BORE 45mm","offer_id":52448905232658,"sku":"LXDSHXJZC0321x1","price":366.18,"currency_code":"USD","in_stock":true},{"title":"UCPH210 BORE 50mm","offer_id":52448905265426,"sku":"LXDSHXJZC0322x1","price":413.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Main-01_d02909b2-d25b-47f6-99e8-a19dbcb655f8.jpg?v=1783687148","url":"https:\/\/homediyer.com\/products\/ucph204-210-pillow-block-mounted-bearings-bore-20-50mm","provider":"HomeDIYer","version":"1.0","type":"link"}