{"product_id":"2gt-timing-pulley-gear-wheel-3d-printer-belt-6mm","title":"2GT 20T 5\/8mm Bore Pulley Gear Wheel for 3D Printer Timing Belt 6mm Width Black","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003e2GT Timing Pulley Gear Wheel — Precise Motion Control for 3D Printers \u0026amp; CNC Machines\u003c\/h2\u003e\n\u003cp\u003eWhen your 3D printer skips steps or your CNC axis loses position, the culprit is often a worn or mismatched timing pulley. Makers, engineers, and repair technicians who demand repeatable accuracy need a pulley that fits correctly and holds its position under continuous load. These 2GT timing pulley gear wheels are engineered for exactly that — delivering consistent tooth engagement and smooth belt tracking on every print or cut.\u003c\/p\u003e\n\u003cp\u003eEach pulley is machined from black-anodized aluminum alloy, combining low weight with solid rigidity. The 2GT (GT2) tooth profile is compatible with standard 2mm-pitch GT2 timing belts. Available in 16-tooth and 20-tooth configurations, with bore options of 5mm or 8mm, and a belt width of 6mm (16mm hub height). Overall outer diameter ranges from approximately 11–14mm depending on tooth count.\u003c\/p\u003e\n\u003cp\u003eTypical use cases include FDM 3D printer X\/Y axis drives (Ender, Prusa, Voron, and similar open-frame designs), desktop CNC router feed axes, laser engraver gantry systems, and custom robotics or automation builds requiring low-backlash linear motion.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003e✅\u003c\/span\u003e Compatible with standard GT2 \/ 2GT 2mm-pitch timing belts, 6mm belt width. Fits common 3D printer motor shafts (5mm and 8mm diameter). Works with NEMA 17 stepper motors and equivalent shaft sizes.\u003c\/div\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These 2GT Timing Pulley Gear Wheels\u003c\/h2\u003e\n\u003cul class=\"hdiy-list\"\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚙️\u003c\/span\u003e\u003cstrong\u003e2GT \/ GT2 Tooth Profile\u003c\/strong\u003e — 2mm pitch tooth geometry ensures positive engagement with GT2 belts, minimizing slip and backlash for accurate positioning.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\u003cstrong\u003eMultiple Bore \u0026amp; Tooth Options\u003c\/strong\u003e — Available in 16T or 20T with 5mm or 8mm bore to match your motor shaft without adapters or shimming.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🏗️\u003c\/span\u003e\u003cstrong\u003eAluminum Alloy Construction\u003c\/strong\u003e — Machined aluminum body keeps rotating mass low, reducing inertia and improving acceleration response on fast-moving axes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🖤\u003c\/span\u003e\u003cstrong\u003eBlack Anodized Finish\u003c\/strong\u003e — Hard anodizing adds surface hardness and corrosion resistance, extending service life in dusty or humid workshop environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\u003cstrong\u003e6mm Belt Width \/ 16mm Hub Height\u003c\/strong\u003e — Standardized dimensions align with the most common GT2 belt widths used in desktop 3D printers and compact CNC systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔧\u003c\/span\u003e\u003cstrong\u003eSet Screw Retention\u003c\/strong\u003e — Includes a grub\/set screw for secure shaft locking, preventing rotational slip during high-speed or high-torque operation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ch2\u003e📐 Technical Specifications — 2GT Timing Pulley\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eTooth Profile\u003c\/th\u003e\n\u003ctd\u003e2GT (GT2), 2mm pitch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTooth Count\u003c\/th\u003e\n\u003ctd\u003e16T or 20T (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Diameter\u003c\/th\u003e\n\u003ctd\u003e5mm or 8mm (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBelt Width\u003c\/th\u003e\n\u003ctd\u003e6mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHub Height\u003c\/th\u003e\n\u003ctd\u003e16mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOuter Diameter\u003c\/th\u003e\n\u003ctd\u003e~11.5mm (16T) \/ ~14.0mm (20T)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eAluminum alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eBlack anodized\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRetention\u003c\/th\u003e\n\u003ctd\u003eSet screw (grub screw)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCompatible Belt\u003c\/th\u003e\n\u003ctd\u003eGT2 \/ 2GT, 6mm width, 2mm pitch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCompatible Shaft\u003c\/th\u003e\n\u003ctd\u003e5mm or 8mm diameter motor shaft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\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-faq\"\u003e\n\u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between 16T and 20T, and which should I choose?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe tooth count determines your motion ratio. A 20-tooth pulley moves the belt farther per motor revolution than a 16-tooth pulley, resulting in faster axis travel but slightly lower torque. A 16-tooth pulley gives finer resolution per step and more torque. Most standard 3D printer builds (Ender 3, Prusa i3 variants) use 20T on the motor and an idler; choose 16T if you are tuning for higher resolution or matching an existing drive system.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWill this fit my NEMA 17 stepper motor shaft?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eStandard NEMA 17 stepper motors have a 5mm diameter output shaft. Select the 5mm bore variant for a direct fit. The 8mm bore variant is intended for larger motors or custom shaft adapters. Always verify your motor's shaft diameter before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs this compatible with GT2 belts from other brands?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. The 2GT tooth profile is an open standard identical to the GT2 profile used by Gates, Filastruder, and most aftermarket belt suppliers. Any GT2 belt with 2mm pitch and 6mm width will mesh correctly with these pulleys.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I secure the pulley to the shaft so it does not slip?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eEach pulley includes a set screw (grub screw) that clamps against the motor shaft. Use a 1.5mm or 2mm hex key to tighten the set screw firmly against the shaft flat (if present) or directly against the shaft surface. For added security on shafts without a flat, apply a small amount of thread-locking compound to the set screw before tightening.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs the aluminum body strong enough for continuous 3D printing use?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eAluminum alloy pulleys are the industry standard for desktop 3D printers and light CNC machines. The material provides sufficient strength for the belt tension and cyclic loads typical of these applications. The black anodized surface adds hardness to the tooth flanks, reducing wear from belt contact over extended use.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use this pulley in a humid or dusty workshop environment?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe hard anodized finish provides corrosion resistance suitable for typical workshop conditions, including moderate humidity and dust exposure. For environments with direct water contact or chemical exposure, additional protective measures may be needed. Wipe the pulley clean periodically to prevent abrasive dust buildup in the tooth grooves.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat belt tension is recommended for these pulleys?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eFor 6mm GT2 belts on 3D printer axes, a belt tension that produces a resonant frequency of approximately 100–130 Hz (measured with a smartphone app like Gates Carbon Drive or a tension meter) is a common starting point. Over-tensioning can increase bearing wear on the motor; under-tensioning causes layer shifting. Refer to your printer's documentation for the manufacturer-recommended tension value.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your Teeths, Inner Hole Diameter, and Height \u0026amp; Belt Width above, then add to cart.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"HomeDIYer","offers":[{"title":"2GT-20T \/ 8mm \/ 16mm \u0026 6mm","offer_id":52444024832274,"sku":"KFCBJT00717x1","price":5.26,"currency_code":"USD","in_stock":true},{"title":"2GT-16T \/ 5mm \/ 16mm \u0026 6mm","offer_id":52444024865042,"sku":"KFCBJT00718x1","price":7.38,"currency_code":"USD","in_stock":true},{"title":"2GT-20T \/ 5mm \/ 16mm \u0026 6mm","offer_id":52444024897810,"sku":"KFCBJT00722x1","price":7.38,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Main-01_a85c6c87-f019-46f1-945b-406f7bf6e038.jpg?v=1783260569","url":"https:\/\/homediyer.com\/products\/2gt-timing-pulley-gear-wheel-3d-printer-belt-6mm","provider":"HomeDIYer","version":"1.0","type":"link"}