{"product_id":"pu-solid-round-drive-belt-polyurethane-close-loop-4mm-10mm","title":"PU Round Drive Belt – Solid Polyurethane Close Loop, 4mm to 10mm Diameter","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003ePU Solid Round Drive Belt — Reliable Close-Loop Power Transmission for 4mm to 10mm Pulleys\u003c\/h2\u003e\n\u003cp\u003eWhen a worn or snapped drive belt brings your lathe, bench grinder, drill press, or DIY machine to a halt, finding an exact replacement fast is critical. Machinists, hobbyists, and small-shop operators who rely on round-groove pulley systems need a belt that fits precisely, runs quietly, and holds up shift after shift — without the hassle of on-site welding or splicing.\u003c\/p\u003e\n\u003cp\u003eEach belt in this listing is a \u003cstrong\u003eseamless close-loop solid polyurethane round belt\u003c\/strong\u003e, sold individually (1 piece per order). Available in wire diameters of \u003cstrong\u003e4 mm (≈5\/32\")\u003c\/strong\u003e, \u003cstrong\u003e5 mm (≈3\/16\")\u003c\/strong\u003e, \u003cstrong\u003e6 mm (≈1\/4\")\u003c\/strong\u003e, \u003cstrong\u003e8 mm (≈5\/16\")\u003c\/strong\u003e, and \u003cstrong\u003e10 mm (≈3\/8\")\u003c\/strong\u003e, with circumferences ranging from \u003cstrong\u003e182 mm (≈7.2\") to 1040 mm (≈40.9\")\u003c\/strong\u003e — over 55 size combinations to match your machine's original specification.\u003c\/p\u003e\n\u003cp\u003eTypical applications include \u003cstrong\u003esmall lathe drive belt replacement\u003c\/strong\u003e, bench grinder spindle drives, woodworking scroll saw drives, sewing machine motor belts, and light conveyor systems in workshop or maker-space settings where a compact, oil-resistant round belt is required.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003eℹ️\u003c\/span\u003e \u003cstrong\u003eCompatibility Note:\u003c\/strong\u003e These are \u003cstrong\u003eround-profile, close-loop (endless) belts\u003c\/strong\u003e for use with \u003cstrong\u003eround-groove or U-groove pulleys only\u003c\/strong\u003e. Not compatible with V-groove, flat, or timing-belt pulleys. Match belt diameter to your pulley groove diameter before ordering.\u003c\/div\u003e\n\u003ch2\u003e✅ Key Features of These PU Solid Round Drive Belts\u003c\/h2\u003e\n\u003cul class=\"hdiy-features\"\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eSeamless Close-Loop Construction\u003c\/strong\u003e — Pre-formed endless loop with no weld seam or splice point, eliminating the weak spots common in field-joined belts and reducing vibration during operation.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🧱\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eSolid Polyurethane Cross-Section\u003c\/strong\u003e — Fully solid PU core provides greater stiffness and load-carrying capacity compared to hollow tube belts of the same diameter, making it a reliable choice for continuous-duty light machinery drives.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003e55+ Size Combinations\u003c\/strong\u003e — Diameters from 4 mm to 10 mm and circumferences from 182 mm to 1040 mm cover a wide range of small lathe, grinder, and workshop machine drive belt specifications in a single listing.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🛢️\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eOil- and Abrasion-Resistant Material\u003c\/strong\u003e — Polyurethane resists mild oils, greases, and workshop chemicals better than standard rubber, helping maintain grip and flexibility in typical machine shop or garage environments.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔇\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eLow-Noise, Smooth Running\u003c\/strong\u003e — The round profile seats evenly in matching grooved pulleys, reducing belt slap and tracking noise that can occur with worn or mismatched belts on precision equipment.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚙️\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eDrop-In Replacement Fit\u003c\/strong\u003e — Designed to match standard round-belt pulley groove dimensions; simply loosen the driven pulley, slip the belt on, and re-tension — no special tools or adhesives needed for installation.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e📐 Technical Specifications — PU Solid Round Drive Belt\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBelt Type\u003c\/th\u003e\n\u003ctd\u003eSolid round, close-loop (endless \/ seamless)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003ePolyurethane (PU)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCross-Section Profile\u003c\/th\u003e\n\u003ctd\u003eCircular (round)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAvailable Diameters\u003c\/th\u003e\n\u003ctd\u003e4 mm (≈5\/32\"), 5 mm (≈3\/16\"), 6 mm (≈1\/4\"), 8 mm (≈5\/16\"), 10 mm (≈3\/8\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAvailable Circumferences\u003c\/th\u003e\n\u003ctd\u003e182 mm (≈7.2\") – 1040 mm (≈40.9\"); see variant options for full list\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eColor\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePulley Compatibility\u003c\/th\u003e\n\u003ctd\u003eRound-groove or U-groove pulleys matching belt diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTemperature Range\u003c\/th\u003e\n\u003ctd\u003eContact us to confirm for your specific application\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTensile Strength\u003c\/th\u003e\n\u003ctd\u003eSee variant options \/ Contact us to confirm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eQuantity per Order\u003c\/th\u003e\n\u003ctd\u003e1 piece (select quantity in variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCountry of Origin\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\u003cdiv class=\"hdiy-note\"\u003e\n\u003cspan class=\"hdiy-note-icon\"\u003e⚠️\u003c\/span\u003e \u003cstrong\u003eSize Selection Tip:\u003c\/strong\u003e The circumference listed is the \u003cem\u003einner loop length\u003c\/em\u003e of the belt. Measure your existing belt's circumference, or calculate from your pulley center-to-center distance before selecting a size. When between sizes, generally size up.\u003c\/div\u003e\n\u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-faq\"\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I choose the right circumference for my machine?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eMeasure the center-to-center distance between your two pulleys, then estimate the belt path: \u003cstrong\u003ecircumference ≈ 2 × center distance + π × average pulley diameter\u003c\/strong\u003e. For reference, a 4 mm × 300 mm belt is approximately 11.8\" in circumference. When in doubt, size up — a slightly longer belt can generally be tensioned; a belt that is too short cannot be safely installed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat load or torque can these belts handle?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eSolid PU round belts are typically suited for \u003cstrong\u003elight-to-medium duty power transmission\u003c\/strong\u003e. Larger diameters (8–10 mm) generally handle higher torque loads than smaller ones (4–5 mm). For high shock-load or continuous heavy-duty industrial applications, contact us to confirm suitability before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre these belts suitable for outdoor or wet environments?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003ePolyurethane is generally resistant to oils, mild chemicals, and moisture, making these belts more suitable for damp or lightly oiled environments than rubber alternatives. Prolonged UV exposure or immersion in harsh solvents may degrade performance over time. For outdoor installations, periodic inspection is recommended.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat pulley groove profile is compatible with these round belts?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThese are \u003cstrong\u003eround-profile belts\u003c\/strong\u003e designed for \u003cstrong\u003eround-groove or U-groove pulleys\u003c\/strong\u003e. They are not compatible with V-groove or flat-belt pulleys. Ensure your pulley groove diameter matches the belt diameter you select (4, 5, 6, 8, or 10 mm) for proper seating and tracking.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use these belts on a lathe, grinder, or sewing machine?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes — solid PU round drive belts are commonly used on \u003cstrong\u003esmall lathes, bench grinders, drill presses, sewing machines\u003c\/strong\u003e, and other light machinery with round-groove pulleys. Select the diameter and circumference that matches your machine's original belt specification for a direct replacement.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I install a close-loop (seamless) round belt?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eClose-loop belts are pre-formed endless loops — \u003cstrong\u003eno welding or joining is needed\u003c\/strong\u003e. To install: loosen or temporarily remove one pulley or bearing, slip the belt over both pulleys, then re-tension. Because the loop circumference is fixed, selecting the correct size before ordering is essential.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between a solid PU belt and a hollow PU belt?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003e\u003cstrong\u003eSolid round belts\u003c\/strong\u003e (this listing) have a fully filled cross-section, giving higher stiffness and load capacity for a given diameter. \u003cstrong\u003eHollow (tube) round belts\u003c\/strong\u003e have a hollow core, making them more flexible and easier to connect end-to-end on site, but they typically carry less load. Choose solid for fixed-loop drive applications; hollow for field-cut and welded installations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your \u003cstrong\u003ediameter and circumference\u003c\/strong\u003e above, then add to cart — ships from our US warehouse.\u003c\/div\u003e\n\u003c\/div\u003e","brand":"HomeDIYer","offers":[{"title":"4 mm x 215 mm \/ 1","offer_id":52377937838354,"sku":"XYHGY-SAL2604-20-001x1","price":7.19,"currency_code":"USD","in_stock":true},{"title":"4 mm x 270 mm \/ 1","offer_id":52377937871122,"sku":"XYHGY-SAL2604-20-002x1","price":7.19,"currency_code":"USD","in_stock":true},{"title":"4 mm x 300 mm \/ 1","offer_id":52377937903890,"sku":"XYHGY-SAL2604-20-003x1","price":7.19,"currency_code":"USD","in_stock":true},{"title":"4 mm x 310 mm \/ 1","offer_id":52377937936658,"sku":"XYHGY-SAL2604-20-004x1","price":7.19,"currency_code":"USD","in_stock":true},{"title":"4 mm x 330 mm \/ 1","offer_id":52377937969426,"sku":"XYHGY-SAL2604-20-005x1","price":7.19,"currency_code":"USD","in_stock":true},{"title":"4 mm x 340 mm \/ 1","offer_id":52377938002194,"sku":"XYHGY-SAL2604-20-006x1","price":7.19,"currency_code":"USD","in_stock":true},{"title":"4 mm x 390 mm \/ 1","offer_id":52377938034962,"sku":"XYHGY-SAL2604-20-007x1","price":7.19,"currency_code":"USD","in_stock":true},{"title":"4 mm x 404 mm \/ 1","offer_id":52377938067730,"sku":"XYHGY-SAL2604-20-008x1","price":7.19,"currency_code":"USD","in_stock":true},{"title":"4 mm x 460 mm \/ 1","offer_id":52377938100498,"sku":"XYHGY-SAL2604-20-009x1","price":7.19,"currency_code":"USD","in_stock":true},{"title":"4 mm x 480 mm \/ 1","offer_id":52377938133266,"sku":"XYHGY-SAL2604-20-010x1","price":7.19,"currency_code":"USD","in_stock":true},{"title":"4 mm x 575 mm \/ 1","offer_id":52377938166034,"sku":"XYHGY-SAL2604-20-011x1","price":7.82,"currency_code":"USD","in_stock":true},{"title":"4 mm x 660 mm \/ 1","offer_id":52377938198802,"sku":"XYHGY-SAL2604-20-012x1","price":8.96,"currency_code":"USD","in_stock":true},{"title":"5 mm x 182 mm \/ 1","offer_id":52377938231570,"sku":"XYHGY-SAL2604-20-013x1","price":6.65,"currency_code":"USD","in_stock":true},{"title":"5 mm x 200 mm \/ 1","offer_id":52377938264338,"sku":"XYHGY-SAL2604-20-014x1","price":7.82,"currency_code":"USD","in_stock":true},{"title":"5 mm x 240 mm \/ 1","offer_id":52377938297106,"sku":"XYHGY-SAL2604-20-015x1","price":7.82,"currency_code":"USD","in_stock":true},{"title":"5 mm x 275 mm \/ 1","offer_id":52377938329874,"sku":"XYHGY-SAL2604-20-016x1","price":7.82,"currency_code":"USD","in_stock":true},{"title":"5 mm x 285 mm \/ 1","offer_id":52377938362642,"sku":"XYHGY-SAL2604-20-017x1","price":7.82,"currency_code":"USD","in_stock":true},{"title":"5 mm x 290 mm \/ 1","offer_id":52377938395410,"sku":"XYHGY-SAL2604-20-018x1","price":7.82,"currency_code":"USD","in_stock":true},{"title":"5 mm x 300 mm \/ 1","offer_id":52377938428178,"sku":"XYHGY-SAL2604-20-019x1","price":7.82,"currency_code":"USD","in_stock":true},{"title":"5 mm x 310 mm \/ 1","offer_id":52377938460946,"sku":"XYHGY-SAL2604-20-020x1","price":7.82,"currency_code":"USD","in_stock":true},{"title":"5 mm x 330 mm \/ 1","offer_id":52377938493714,"sku":"XYHGY-SAL2604-20-021x1","price":7.82,"currency_code":"USD","in_stock":true},{"title":"5 mm x 342 mm \/ 1","offer_id":52377938526482,"sku":"XYHGY-SAL2604-20-022x1","price":7.82,"currency_code":"USD","in_stock":true},{"title":"5 mm x 360 mm \/ 1","offer_id":52377938559250,"sku":"XYHGY-SAL2604-20-023x1","price":7.82,"currency_code":"USD","in_stock":true},{"title":"5 mm x 380 mm \/ 1","offer_id":52377938592018,"sku":"XYHGY-SAL2604-20-024x1","price":7.82,"currency_code":"USD","in_stock":true},{"title":"6 mm x 215 mm \/ 1","offer_id":52377938624786,"sku":"XYHGY-SAL2604-20-025x1","price":6.65,"currency_code":"USD","in_stock":true},{"title":"6 mm x 242 mm \/ 1","offer_id":52377938657554,"sku":"XYHGY-SAL2604-20-026x1","price":6.65,"currency_code":"USD","in_stock":true},{"title":"6 mm x 280 mm \/ 1","offer_id":52377938690322,"sku":"XYHGY-SAL2604-20-027x1","price":6.65,"currency_code":"USD","in_stock":true},{"title":"6 mm x 320 mm \/ 1","offer_id":52377938723090,"sku":"XYHGY-SAL2604-20-028x1","price":7.19,"currency_code":"USD","in_stock":true},{"title":"6 mm x 358 mm \/ 1","offer_id":52377938755858,"sku":"XYHGY-SAL2604-20-029x1","price":7.19,"currency_code":"USD","in_stock":true},{"title":"6 mm x 420 mm \/ 1","offer_id":52377938788626,"sku":"XYHGY-SAL2604-20-030x1","price":7.82,"currency_code":"USD","in_stock":true},{"title":"6 mm x 450 mm \/ 1","offer_id":52377938821394,"sku":"XYHGY-SAL2604-20-031x1","price":7.82,"currency_code":"USD","in_stock":true},{"title":"6 mm x 460 mm \/ 1","offer_id":52377938854162,"sku":"XYHGY-SAL2604-20-032x1","price":7.82,"currency_code":"USD","in_stock":true},{"title":"6 mm x 470 mm \/ 1","offer_id":52377938886930,"sku":"XYHGY-SAL2604-20-033x1","price":8.42,"currency_code":"USD","in_stock":true},{"title":"6 mm x 490 mm \/ 1","offer_id":52377938919698,"sku":"XYHGY-SAL2604-20-034x1","price":8.42,"currency_code":"USD","in_stock":true},{"title":"6 mm x 500 mm \/ 1","offer_id":52377938952466,"sku":"XYHGY-SAL2604-20-035x1","price":8.42,"currency_code":"USD","in_stock":true},{"title":"6 mm x 510 mm \/ 1","offer_id":52377938985234,"sku":"XYHGY-SAL2604-20-036x1","price":8.42,"currency_code":"USD","in_stock":true},{"title":"8 mm x 430 mm \/ 1","offer_id":52377939018002,"sku":"XYHGY-SAL2604-20-037x1","price":9.59,"currency_code":"USD","in_stock":true},{"title":"8 mm x 480 mm \/ 1","offer_id":52377939050770,"sku":"XYHGY-SAL2604-20-038x1","price":9.59,"currency_code":"USD","in_stock":true},{"title":"8 mm x 500 mm \/ 1","offer_id":52377939083538,"sku":"XYHGY-SAL2604-20-039x1","price":9.59,"currency_code":"USD","in_stock":true},{"title":"8 mm x 600 mm \/ 1","offer_id":52377939116306,"sku":"XYHGY-SAL2604-20-040x1","price":9.59,"currency_code":"USD","in_stock":true},{"title":"8 mm x 650 mm \/ 1","offer_id":52377939149074,"sku":"XYHGY-SAL2604-20-041x1","price":9.64,"currency_code":"USD","in_stock":true},{"title":"8 mm x 680 mm \/ 1","offer_id":52377939181842,"sku":"XYHGY-SAL2604-20-042x1","price":10.4,"currency_code":"USD","in_stock":true},{"title":"8 mm x 710 mm \/ 1","offer_id":52377939214610,"sku":"XYHGY-SAL2604-20-043x1","price":10.54,"currency_code":"USD","in_stock":true},{"title":"8 mm x 775 mm \/ 1","offer_id":52377939247378,"sku":"XYHGY-SAL2604-20-044x1","price":10.87,"currency_code":"USD","in_stock":true},{"title":"8 mm x 800 mm \/ 1","offer_id":52377939280146,"sku":"XYHGY-SAL2604-20-045x1","price":11.0,"currency_code":"USD","in_stock":true},{"title":"8 mm x 900 mm \/ 1","offer_id":52377939312914,"sku":"XYHGY-SAL2604-20-046x1","price":12.09,"currency_code":"USD","in_stock":true},{"title":"8 mm x 1000 mm \/ 1","offer_id":52377939345682,"sku":"XYHGY-SAL2604-20-047x1","price":12.58,"currency_code":"USD","in_stock":true},{"title":"10 mm x 615 mm \/ 1","offer_id":52377939378450,"sku":"XYHGY-SAL2604-20-048x1","price":12.99,"currency_code":"USD","in_stock":true},{"title":"10 mm x 650 mm \/ 1","offer_id":52377939411218,"sku":"XYHGY-SAL2604-20-049x1","price":13.8,"currency_code":"USD","in_stock":true},{"title":"10 mm x 700 mm \/ 1","offer_id":52377939443986,"sku":"XYHGY-SAL2604-20-050x1","price":14.81,"currency_code":"USD","in_stock":true},{"title":"10 mm x 850 mm \/ 1","offer_id":52377939476754,"sku":"XYHGY-SAL2604-20-051x1","price":16.52,"currency_code":"USD","in_stock":true},{"title":"10 mm x 900 mm \/ 1","offer_id":52377939509522,"sku":"XYHGY-SAL2604-20-052x1","price":17.53,"currency_code":"USD","in_stock":true},{"title":"10 mm x 1000 mm \/ 1","offer_id":52377939542290,"sku":"XYHGY-SAL2604-20-053x1","price":18.84,"currency_code":"USD","in_stock":true},{"title":"10 mm x 1040 mm \/ 1","offer_id":52377939575058,"sku":"XYHGY-SAL2604-20-054x1","price":19.71,"currency_code":"USD","in_stock":true},{"title":"10 mm x 800 mm \/ 1","offer_id":52377939607826,"sku":"XYHGY-SAL2604-20-055x1","price":14.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Main-03_60062b2f-a51f-4eee-9e28-e752ce3d2721.jpg?v=1781605523","url":"https:\/\/homediyer.com\/products\/pu-solid-round-drive-belt-polyurethane-close-loop-4mm-10mm","provider":"HomeDIYer","version":"1.0","type":"link"}