{"product_id":"gt2-16-teeth-timing-pulley-3d-printer-cnc-laser-cutter","title":"GT2 16 Teeth 3mm\/3.17\/4\/5\/6\/6.35mm Bore Pulleys For 3d printer CNC Laser Cutter","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eGT2 16-Tooth Timing Pulleys — Precise Motion Control for 3D Printers, CNC \u0026amp; Laser Cutters\u003c\/h2\u003e\n\u003cp\u003eWhen your 3D printer skips steps or your CNC router loses position mid-cut, the culprit is often a worn or mismatched timing pulley. Makers, hobbyists, and small-shop machinists who demand repeatable accuracy need a GT2 pulley that fits their shaft exactly and meshes cleanly with their belt — every single time.\u003c\/p\u003e\n\u003cp\u003eThese GT2 16-tooth timing pulleys are machined from aluminum alloy with a standard 2mm pitch GT2 tooth profile. Bore options span 3mm, 3.17mm (1\/8 in), 4mm, 5mm, 6mm, and 6.35mm (1\/4 in), covering the most common motor shaft diameters used in desktop motion systems. Belt width compatibility ranges from 6mm to 15mm (approximately 0.24 in to 0.59 in), with matching variants for 6mm, 9mm, 10mm, and 15mm GT2 belts.\u003c\/p\u003e\n\u003cp\u003eTypical applications include Cartesian and CoreXY 3D printer X\/Y axis drives, NEMA 17 stepper motor shafts on CNC routers, laser cutter gantry systems, and lightweight robotic arm joints — anywhere a GT2 16T aluminum timing pulley with a precise bore fit is required for 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 \u003cstrong\u003eCompatible with:\u003c\/strong\u003e GT2 2mm-pitch open or closed-loop belts  |  6 \/ 9 \/ 10 \/ 15mm belt widths  |  NEMA 17 \u0026amp; NEMA 23 stepper motor shafts  |  3D printers, CNC routers, laser cutters, and robotic actuators\u003c\/div\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These GT2 16-Tooth Timing Pulleys\u003c\/h2\u003e\n\u003cul class=\"hdiy-list\"\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🎯\u003c\/span\u003e\u003cstrong\u003e16-Tooth GT2 Profile\u003c\/strong\u003e — Standard 2mm pitch tooth geometry ensures smooth, low-backlash engagement with GT2 open and closed-loop belts for accurate linear positioning.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\u003cstrong\u003eSix Bore Sizes Available\u003c\/strong\u003e — Choose from 3mm, 3.17mm, 4mm, 5mm, 6mm, or 6.35mm 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\u003eFour Belt Width Options\u003c\/strong\u003e — Variants for 6mm, 9mm, 10mm, and 15mm GT2 belts let you match the pulley flange to your existing belt without modification.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🏗️\u003c\/span\u003e\u003cstrong\u003eAluminum Alloy Construction\u003c\/strong\u003e — Lightweight yet rigid aluminum body keeps rotational inertia low while providing the dimensional stability needed for repeatable motion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔧\u003c\/span\u003e\u003cstrong\u003eSet-Screw Retention\u003c\/strong\u003e — Includes a radial set screw for secure shaft clamping, preventing slippage under the rapid direction changes typical in 3D printer and CNC duty cycles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e\u003cstrong\u003eDrop-In Replacement Geometry\u003c\/strong\u003e — Standard GT2 16T outer diameter and hub dimensions make these a direct swap for worn pulleys on most Ender, Voron, Prusa, and similar open-frame machines.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ch2\u003e📐 Technical Specifications — GT2 Timing Pulley\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eTooth Profile\u003c\/th\u003e\n\u003ctd\u003eGT2 (2mm pitch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNumber of Teeth\u003c\/th\u003e\n\u003ctd\u003e16T\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Diameter\u003c\/th\u003e\n\u003ctd\u003e3mm \/ 3.17mm \/ 4mm \/ 5mm \/ 6mm \/ 6.35mm (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBelt Width Compatibility\u003c\/th\u003e\n\u003ctd\u003e6mm \/ 9mm \/ 10mm \/ 15mm (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePitch Diameter\u003c\/th\u003e\n\u003ctd\u003eApprox. 10.19mm (0.401 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutside Diameter\u003c\/th\u003e\n\u003ctd\u003eApprox. 11mm–12mm (0.43–0.47 in)\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\u003eRetention Method\u003c\/th\u003e\n\u003ctd\u003eRadial set screw\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight (per piece)\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFlange\u003c\/th\u003e\n\u003ctd\u003eFlanged (standard GT2 flange)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eNatural aluminum \/ anodized (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003ctd\u003e3D printers, CNC routers, laser cutters, robotics\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\u003eHow do I choose the right bore size for my stepper motor?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eMeasure your motor shaft diameter with a caliper. NEMA 17 motors most commonly use a 5mm shaft, while some use 4mm. Older or imperial-spec motors may use 3.17mm (1\/8 in) or 6.35mm (1\/4 in) shafts. Select the bore that matches your shaft exactly — a loose bore will cause slippage even with the set screw tightened.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhich belt width variant should I order?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eMatch the belt width variant to the GT2 belt already installed in your machine. The most common widths are 6mm (used on many Ender-series and Prusa printers) and 10mm (used on wider-format or higher-torque builds). The pulley flanges are sized to guide the specific belt width — mixing widths can cause belt tracking issues.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre these pulleys compatible with closed-loop GT2 belts?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. The GT2 2mm-pitch tooth profile is identical whether you are using open-loop belt stock or a closed-loop GT2 belt. Ensure the belt's inner circumference is appropriate for your axis travel distance and that the belt width matches the variant you select.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow strong is the set-screw retention? Will it slip under load?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe radial set screw provides reliable clamping for the torque levels typical of NEMA 17 and NEMA 23 stepper motors in 3D printing and light CNC use. For best results, tighten the set screw against a flat on the motor shaft if one is present, and use a small amount of thread-locking compound on the screw threads to prevent loosening from vibration.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWill aluminum pulleys corrode or wear out quickly?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eAluminum alloy offers good corrosion resistance in typical indoor workshop and desktop machine environments. The tooth surfaces will show minor wear over millions of cycles, which is normal. For high-duty-cycle industrial applications requiring maximum longevity, consider steel pulleys; for standard 3D printing and hobby CNC use, aluminum is the industry-standard choice due to its light weight and adequate durability.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use these as a direct replacement for the pulleys on my Ender 3, Voron, or Prusa printer?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThese GT2 16T pulleys share the standard tooth geometry and hub dimensions used across most open-frame desktop 3D printers. For Ender-series machines, select the 5mm bore \/ 6mm belt width variant. For Voron builds, verify your specific axis motor shaft diameter and belt width before ordering. Always confirm the bore and belt width match your machine's specifications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow many pulleys are included per order?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eEach order is for one (1) pulley unless a multi-pack quantity option is shown in the variant selector above. Select your required quantity at checkout if you need multiple pieces for a full axis rebuild or new build.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your bore size and belt width above, then add to cart.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"HomeDIYer","offers":[{"title":"16T \/ 5mm \/ 15mm","offer_id":52446051303698,"sku":"KFCBJT00783x1","price":4.83,"currency_code":"USD","in_stock":true},{"title":"16T \/ 4mm \/ 6mm","offer_id":52446051336466,"sku":"KFCBJT00784x1","price":2.43,"currency_code":"USD","in_stock":true},{"title":"16T \/ 5mm \/ 6mm","offer_id":52446051369234,"sku":"KFCBJT00785x1","price":4.42,"currency_code":"USD","in_stock":true},{"title":"16T \/ 6.35mm \/ 10mm","offer_id":52446051402002,"sku":"KFCBJT00786x1","price":3.79,"currency_code":"USD","in_stock":true},{"title":"16T \/ 6mm \/ 10mm","offer_id":52446051434770,"sku":"KFCBJT00787x1","price":3.79,"currency_code":"USD","in_stock":true},{"title":"16T \/ 6mm \/ 9mm","offer_id":52446051467538,"sku":"KFCBJT00788x1","price":4.47,"currency_code":"USD","in_stock":true},{"title":"16T \/ 6.35mm \/ 6mm","offer_id":52446051500306,"sku":"KFCBJT00789x1","price":3.39,"currency_code":"USD","in_stock":true},{"title":"16T \/ 6mm \/ 6mm","offer_id":52446051533074,"sku":"KFCBJT00790x1","price":3.39,"currency_code":"USD","in_stock":true},{"title":"16T \/ 4mm \/ 10mm","offer_id":52446051565842,"sku":"KFCBJT00791x1","price":4.47,"currency_code":"USD","in_stock":true},{"title":"16T \/ 3mm \/ 10mm","offer_id":52446051598610,"sku":"KFCBJT00792x1","price":4.47,"currency_code":"USD","in_stock":true},{"title":"16T \/ 5mm \/ 10mm","offer_id":52446051631378,"sku":"KFCBJT00793x1","price":3.79,"currency_code":"USD","in_stock":true},{"title":"16T \/ 5mm \/ 9mm","offer_id":52446051664146,"sku":"KFCBJT00795x1","price":4.47,"currency_code":"USD","in_stock":true},{"title":"16T \/ 3.17mm \/ 6mm","offer_id":52446051696914,"sku":"KFCBJT00796x1","price":3.39,"currency_code":"USD","in_stock":true},{"title":"16T \/ 3mm \/ 6mm","offer_id":52446051729682,"sku":"KFCBJT00797x1","price":3.39,"currency_code":"USD","in_stock":true},{"title":"16T \/ 3.17mm \/ 10mm","offer_id":52446051762450,"sku":"KFCBJT00798x1","price":4.47,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture3of6_a9cd35c0-ff91-407a-bac3-3379e93d572e.jpg?v=1784118630","url":"https:\/\/homediyer.com\/products\/gt2-16-teeth-timing-pulley-3d-printer-cnc-laser-cutter","provider":"HomeDIYer","version":"1.0","type":"link"}