{"product_id":"rubber-round-drive-belts-2mm-2-5mm-pulley-70-80-90mm","title":"Rubber Round Drive Belts 2mm \u0026 2.5mm Diameter for Pulleys — 70mm, 80mm, 90mm","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"hdiy-desc\"\u003e\n\u003ch2\u003eRubber Round Drive Belts for Small Pulleys — Reliable Power Transmission in Compact Machines\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003cp\u003eWhen a worn or snapped drive belt brings your lathe, mini drill press, or hobby machine to a halt, finding the right replacement in the correct diameter and length can be frustrating. These rubber round drive belts are designed for makers, hobbyists, and repair technicians who need a dependable, ready-to-install solution for small pulley-driven equipment — without waiting on a specialty order.\u003c\/p\u003e\n\u003cp\u003eEach pack contains \u003cstrong\u003e10 pieces\u003c\/strong\u003e of round rubber drive belts in your chosen size. Available in two cross-section diameters — \u003cstrong\u003e2mm (≈5\/64\")\u003c\/strong\u003e and \u003cstrong\u003e2.5mm (≈3\/32\")\u003c\/strong\u003e — and three loop lengths: \u003cstrong\u003e70mm (≈2.76\")\u003c\/strong\u003e, \u003cstrong\u003e80mm (≈3.15\")\u003c\/strong\u003e, and \u003cstrong\u003e90mm (≈3.54\")\u003c\/strong\u003e. The belts are made from flexible rubber compound that provides consistent grip and elasticity across the supported size range.\u003c\/p\u003e\n\u003cp\u003eTypical applications include \u003cstrong\u003esmall wood lathes and metal lathes\u003c\/strong\u003e requiring round belt replacement, \u003cstrong\u003epottery wheels and craft machines\u003c\/strong\u003e with open-groove pulleys, and \u003cstrong\u003evintage sewing machines or clock mechanisms\u003c\/strong\u003e that use round-section drive belts. The compact size range also suits DIY pulley systems and light-duty power transmission projects.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003e🔗\u003c\/span\u003e \u003cstrong\u003eCompatibility Note:\u003c\/strong\u003e These belts fit pulleys with a matching round groove (V-groove or round-bottom groove). Verify your pulley groove diameter and center-to-center distance before selecting a size. Belt length = loop circumference, not straight length.\u003c\/div\u003e\n\u003ch2\u003e✅ Key Features of These Rubber 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\u003eRound Cross-Section Design\u003c\/strong\u003e — Fits standard round-groove pulleys used in small lathes, hobby machines, and light-duty power transmission setups without modification.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eMultiple Sizes in One Order\u003c\/strong\u003e — Available in 2×70mm, 2×90mm, and 2.5×80mm to cover the most common small-pulley belt sizes; 10pcs per pack for spares on hand.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eFlexible Rubber Compound\u003c\/strong\u003e — Maintains elasticity under repeated flexing cycles, helping sustain consistent belt tension in low-speed, light-load pulley drive applications.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🛠️\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eTool-Free Installation\u003c\/strong\u003e — The elastic nature of these round rubber drive belts allows hand installation over most small pulleys without requiring belt tools or disassembly of the machine housing.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔁\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eSmooth, Quiet Power Transfer\u003c\/strong\u003e — Round belt drives typically run quieter than toothed or flat belts in small-diameter pulley systems, making them suitable for workshop and studio environments.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003e10-Piece Pack for Backup Stock\u003c\/strong\u003e — Keeping spare round drive belts on hand reduces machine downtime; the 10pcs pack format is practical for repair shops and active hobbyists.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e📐 Technical Specifications — Rubber Round Drive Belts\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\u003eRound (circular cross-section) rubber drive belt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAvailable Diameters\u003c\/th\u003e\n\u003ctd\u003e2mm (≈5\/64\") and 2.5mm (≈3\/32\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAvailable Loop Lengths\u003c\/th\u003e\n\u003ctd\u003e70mm (≈2.76\"), 80mm (≈3.15\"), 90mm (≈3.54\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSize Options\u003c\/th\u003e\n\u003ctd\u003e2×70mm \/ 2×90mm \/ 2.5×80mm (diameter × loop length)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eQuantity per Pack\u003c\/th\u003e\n\u003ctd\u003e10 pieces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eRubber compound (flexible, elastic)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePulley Groove Type\u003c\/th\u003e\n\u003ctd\u003eRound-bottom groove or matching V-groove\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRecommended Use\u003c\/th\u003e\n\u003ctd\u003eLight-duty pulley drives, small lathes, hobby machines, craft equipment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDrive Speed\u003c\/th\u003e\n\u003ctd\u003eSee variant options \/ Contact us to confirm for your application\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\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\u003eBefore ordering:\u003c\/strong\u003e Measure your pulley groove diameter and the belt path circumference. Belt size listed is loop circumference × cross-section diameter. If unsure, contact us to confirm compatibility.\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 belt length for my pulley?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eMeasure the circumference of your pulley path — wrap a string around both pulleys and measure the total loop length. For a 70mm belt, the loop circumference is 70mm (≈2.76\"); 80mm is ≈3.15\"; 90mm is ≈3.54\". Choose the size closest to your measured path. A slight stretch is normal and helps maintain tension.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat diameter belt should I use — 2mm or 2.5mm?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe belt diameter should match the groove width of your pulley. 2mm belts fit pulleys with a groove width of approximately 2–2.2mm; 2.5mm belts fit grooves of approximately 2.5–2.8mm. Check your pulley groove spec before ordering. When in doubt, measure the existing worn belt with calipers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan these belts handle continuous-duty operation?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThese round rubber drive belts are generally suited for \u003cstrong\u003elight-duty and intermittent-duty\u003c\/strong\u003e applications such as small lathes, hobby machines, and DIY equipment. For heavy continuous-duty industrial use, verify the load rating with your machine specifications 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\u003eRubber round belts typically offer moderate resistance to moisture and mild oils. They are generally not recommended for prolonged outdoor UV exposure or immersion in solvents. For wet or outdoor applications, confirm material compatibility with your specific use case before purchasing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat machines are these round drive belts compatible with?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThese belts are commonly used in \u003cstrong\u003esmall lathes, mini drill presses, sewing machines, pottery wheels, clock mechanisms\u003c\/strong\u003e, and other light-duty pulley-driven equipment. Compatibility depends on pulley groove diameter and center distance — always verify your machine's belt spec before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I install a round drive belt without tools?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eIn most cases, round rubber belts can be installed by hand. Slip one end over the first pulley, then gently stretch the belt around the second pulley while rotating it slowly. No special tools are typically required for small-diameter belts in this size range. Reduce center distance between pulleys first if available on your machine.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow many belts come in one pack, and can I mix sizes?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eEach pack contains \u003cstrong\u003e10 pieces of the same size\u003c\/strong\u003e. Select your preferred size (2×70mm, 2×90mm, or 2.5×80mm) from the variant options above. If you need multiple sizes, add each size as a separate item to your cart.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your \u003cstrong\u003esize and quantity\u003c\/strong\u003e above, then add to cart — ships from our US warehouse.\u003c\/div\u003e\n\u003c\/div\u003e","brand":"HomeDIYer","offers":[{"title":"2×70mm \/ 10pcs","offer_id":52377912475922,"sku":"LFLJSCS02071x1","price":2.75,"currency_code":"USD","in_stock":true},{"title":"2×90mm \/ 10pcs","offer_id":52377912508690,"sku":"LFLJSCS02072x1","price":3.07,"currency_code":"USD","in_stock":true},{"title":"2.5×80mm \/ 10pcs","offer_id":52377912541458,"sku":"LFLJSCS02073x1","price":3.07,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture2of3_a4e9ccc5-ac61-4cf6-9263-5c412ae8d8c9.jpg?v=1781601264","url":"https:\/\/homediyer.com\/products\/rubber-round-drive-belts-2mm-2-5mm-pulley-70-80-90mm","provider":"HomeDIYer","version":"1.0","type":"link"}