{"product_id":"gt2-closed-loop-timing-belt-2mm-pitch-10mm-wide-cnc-3d-printer","title":"GT2 Closed Loop Timing Belt — 2mm Pitch, 10mm Wide, 85T to 1500T for CNC \u0026 3D Printer","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eGT2 Closed Loop Timing Belt — Precision Motion for CNC, 3D Printers \u0026amp; Laser Cutters\u003c\/h2\u003e\n\u003cp\u003eWhen a loose or mismatched timing belt causes your CNC router to skip steps or your 3D printer to produce layer shifts, the fix starts with the right belt. This GT2 closed loop timing belt is designed for makers, engineers, and machine builders who need reliable, repeatable linear motion without the hassle of splicing or clamping open-ended belts.\u003c\/p\u003e\n\u003cp\u003eEach belt is a single continuous loop with a 2mm GT2 tooth pitch and 10mm (≈3\/8\") width. Available in 34 sizes ranging from 85 teeth \/ 170mm (≈6.7\") circumference up to 1500 teeth \/ 3000mm (≈118\") circumference, with the circumference equal to the tooth count multiplied by the 2mm pitch. The rubber body is reinforced with a tensile cord core (fiberglass or equivalent) to resist stretch under load.\u003c\/p\u003e\n\u003cp\u003eTypical applications include CoreXY and Cartesian 3D printer axes, CNC router gantry drives, laser engraver X\/Y carriages, and DIY linear motion systems — anywhere a GT2 closed loop belt for 10mm pulleys is specified in the build documentation.\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:\u003c\/strong\u003e Fits any GT2 pulley designed for 10mm-wide belts with a 2mm pitch. Common pulley sizes: 16T, 20T, 36T, 40T. Verify your pulley's flange width and bore before ordering.\u003c\/div\u003e\n\u003cdiv class=\"hdiy-note\"\u003e\n\u003cspan class=\"hdiy-note-icon\"\u003e⚠️\u003c\/span\u003e \u003cstrong\u003eSize confirmation:\u003c\/strong\u003e Belt circumference = tooth count × 2mm. Double-check your required loop length before selecting a variant. If your size is not listed, contact us to confirm availability.\u003c\/div\u003e\n\u003ch2\u003e✅ Key Features of These GT2 Closed Loop Timing 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 Closed Loop Construction\u003c\/strong\u003e — No splice, no clip, no weak point. The continuous loop design delivers consistent tension and longer service life compared to open-ended belts with mechanical joiners.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eGT2 2mm Pitch Tooth Profile\u003c\/strong\u003e — The GT2 profile is the de facto standard for desktop CNC and 3D printer motion systems, providing low backlash and smooth engagement with GT2 pulleys across a wide speed range.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📏\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003e34 Sizes in One Listing\u003c\/strong\u003e — From 170mm (≈6.7\") to 3000mm (≈118\") circumference, covering the most common loop lengths used in open-source CNC and 3D printer builds without custom ordering.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e💪\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eReinforced Tensile Cord Core\u003c\/strong\u003e — An internal cord layer resists belt stretch under sustained tension, helping maintain positional accuracy on long print runs or extended CNC cutting sessions.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚙️\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003e10mm Width for Heavier Axes\u003c\/strong\u003e — The 10mm belt width provides greater lateral stability and load capacity than 6mm belts, making it well-suited for dual-motor gantry setups and heavier carriage assemblies.\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 for Standard Builds\u003c\/strong\u003e — Dimensionally consistent with GT2 belt specifications used in popular open-source machines, so you can swap a worn belt without modifying your frame or pulley mounts.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e📐 Technical Specifications — GT2 Closed Loop Timing 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\u003eGT2 Closed Loop Synchronous Timing Belt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTooth Pitch\u003c\/th\u003e\n\u003ctd\u003e2mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBelt Width\u003c\/th\u003e\n\u003ctd\u003e10mm (≈3\/8\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAvailable Tooth Counts\u003c\/th\u003e\n\u003ctd\u003e85T, 90T, 100T, 101T, 110T, 120T, 125T, 130T, 140T, 147T, 150T, 160T, 170T, 175T, 180T, 188T, 190T, 200T, 210T, 218T, 222T, 225T, 250T, 275T, 300T, 305T, 320T, 335T, 355T, 376T, 380T, 450T, 500T, 1500T\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCircumference Range\u003c\/th\u003e\n\u003ctd\u003e170mm (≈6.7\") to 3000mm (≈118\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCircumference Formula\u003c\/th\u003e\n\u003ctd\u003eTooth Count × 2mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBody Material\u003c\/th\u003e\n\u003ctd\u003eRubber compound (neoprene or equivalent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCore Reinforcement\u003c\/th\u003e\n\u003ctd\u003eFiberglass cord or equivalent tensile cord\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCompatible Pulley Standard\u003c\/th\u003e\n\u003ctd\u003eGT2, 10mm flange width\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLoop Construction\u003c\/th\u003e\n\u003ctd\u003eSeamless closed loop (no splice)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTypical Applications\u003c\/th\u003e\n\u003ctd\u003eCNC routers, 3D printers, laser engravers, linear motion systems\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\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 (number of teeth)?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eMeasure the center-to-center distance between your two pulleys, then calculate the required belt circumference: \u003cem\u003e(C-to-C × 2) + (pulley1 teeth + pulley2 teeth) × pitch ÷ 2\u003c\/em\u003e. Divide the total circumference by 2mm (the GT2 pitch) to get the tooth count. For example, a 200mm circumference loop needs 100 teeth. When in doubt, size up — a slightly longer belt can be tensioned; a short one cannot. Circumference = tooth count × 2mm for all variants in this listing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the tensile strength of this GT2 timing belt?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eGT2 closed loop belts with a fiberglass or equivalent cord core typically handle tensile loads of generally 40–80 N per belt width, depending on core material and construction. For light-to-medium duty CNC axes and 3D printer motion systems, this is typically more than sufficient. Avoid sustained shock loads beyond the rated specification.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan this belt be used outdoors or in humid environments?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe rubber compound used in GT2 belts is generally resistant to moderate moisture and humidity. However, prolonged UV exposure or immersion in water or oils can degrade the belt over time. For outdoor or wet-environment use, inspect the belt periodically and replace if cracking, glazing, or tooth wear is observed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs this belt compatible with standard GT2 pulleys?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. This belt follows the GT2 tooth profile standard with a 2mm pitch and is compatible with any GT2 pulley designed for 10mm-wide belts. Common pulley tooth counts used with this belt include 16T, 20T, 36T, and 40T. Always verify your pulley's bore diameter and flange width before ordering to ensure a proper fit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I know if I need a 10mm wide belt vs. a 6mm wide belt?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eBelt width affects load capacity and lateral stability. A 10mm wide GT2 belt is generally chosen for heavier gantry axes, dual-motor CoreXY setups, or applications where belt tracking or flex is a concern. A 6mm belt is typically sufficient for lightweight print heads or single-axis light-duty motion. Match the belt width to your pulley's flange width — mixing widths causes edge wear and premature failure.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat machines commonly use this GT2 closed loop timing belt?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThis belt is commonly used in FDM 3D printers (CoreXY, Cartesian, and delta configurations), CNC routers, laser engravers, pick-and-place machines, and DIY linear motion systems. It is a standard component in many open-source motion platforms including Voron, RatRig, and similar builds.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat does \"closed loop\" mean and why does it matter?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eA closed loop belt is a continuous loop with no open ends or joining hardware. This eliminates the weak point of a belt clip or mechanical splice, providing more consistent tension distribution and longer service life. It is the preferred configuration for precision motion systems where positional repeatability matters, such as 3D printing and CNC routing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your size above, then add to cart — ships from our US warehouse.\u003c\/div\u003e\n\u003c\/div\u003e","brand":"HomeDIYer","offers":[{"title":"85 Teeth 170mm GT2-10mm","offer_id":52367125152018,"sku":"PENGBJT01589x1","price":9.32,"currency_code":"USD","in_stock":true},{"title":"90 Teeth 180mm GT2-10mm","offer_id":52367125184786,"sku":"PENGBJT01585x1","price":9.32,"currency_code":"USD","in_stock":true},{"title":"100 Teeth 200mm GT2-10mm","offer_id":52367125217554,"sku":"PENGBJT01588x1","price":9.45,"currency_code":"USD","in_stock":true},{"title":"101 Teeth 202mm GT2-10mm","offer_id":52367125250322,"sku":"PENGBJT01587x1","price":9.45,"currency_code":"USD","in_stock":true},{"title":"110 Teeth 220mm 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