{"product_id":"gt2-timing-pulley-drive-sprocket-3d-printer-bearing","title":"GT2 Zahnrad Antrieb Riemenscheibe Zahnriemenrad für 3D Drucker Kugellager Pulley","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eGT2 Timing Pulley Drive Sprocket — Precision Motion Control for 3D Printers \u0026amp; CNC Builds\u003c\/h2\u003e\n\u003cp\u003eWhen your 3D printer or CNC router loses positional accuracy, the culprit is often a worn or mismatched timing pulley. Makers, hobbyists, and workshop engineers who demand repeatable, backlash-free motion need a GT2 drive sprocket they can rely on across hundreds of print hours. These GT2 20-tooth pulleys are engineered for the motion-control demands of desktop 3D printers, laser cutters, and lightweight CNC machines.\u003c\/p\u003e\n\u003cp\u003eEach pulley is machined from aluminum alloy with an anodized finish, available in 20-tooth GT2 profile. Belt width options cover 6 mm (~0.24 in) and 10 mm (~0.39 in), with bore (inner hole) sizes ranging from 3 mm to 6 mm (~0.12–0.24 in) to suit common motor shaft diameters. Idler variants are offered in smooth-bore (Glatt) and toothed (Gezahnt) configurations, with integrated flanged bearings for low-friction belt guidance.\u003c\/p\u003e\n\u003cp\u003eTypical use cases include Cartesian and CoreXY 3D printer axis drives, belt-driven laser engraver gantries, and lightweight CNC router feed systems where a GT2 20T drive pulley with bearing idler keeps belt tension consistent and layer lines sharp.\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 2 mm pitch timing belts in 6 mm and 10 mm widths. Fits motor shafts from 3 mm to 6 mm diameter. Suitable for Ender 3, Prusa, Voron, and most open-frame 3D printer platforms.\u003c\/div\u003e\n\u003ch2\u003e✅ Key Features of These GT2 Timing Pulleys\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🦷\u003c\/span\u003e\u003cstrong\u003e20-Tooth GT2 Profile\u003c\/strong\u003e\n\u003cp\u003eStandard 2 mm pitch GT2 tooth geometry ensures positive belt engagement and minimal backlash on X\/Y motion axes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\u003cstrong\u003eDual Idler Types\u003c\/strong\u003e\n\u003cp\u003eChoose smooth-bore (Glatt) idlers for belt redirection or toothed (Gezahnt) idlers for driven pulley applications — both available in the same listing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\u003cstrong\u003eMultiple Belt \u0026amp; Bore Sizes\u003c\/strong\u003e\n\u003cp\u003e6 mm and 10 mm belt width variants with bore options from 3 mm to 6 mm cover the most common 3D printer and CNC motor shaft configurations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🏗️\u003c\/span\u003e\u003cstrong\u003eAluminum Alloy Construction\u003c\/strong\u003e\n\u003cp\u003eLightweight yet rigid aluminum body with anodized surface treatment resists wear and corrosion across extended duty cycles.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🎯\u003c\/span\u003e\u003cstrong\u003eIntegrated Flanged Bearing\u003c\/strong\u003e\n\u003cp\u003ePre-installed flanged bearing on idler variants reduces friction and keeps the belt tracking true without additional hardware.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e\u003cstrong\u003eDrop-In Replacement Fit\u003c\/strong\u003e\n\u003cp\u003eDimensionally matched to OEM GT2 pulleys used in popular open-source printer designs — swap in without frame modifications.\u003c\/p\u003e\n\u003c\/div\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 (2 mm pitch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNumber of Teeth\u003c\/th\u003e\n\u003ctd\u003e20T\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBelt Width\u003c\/th\u003e\n\u003ctd\u003e6 mm or 10 mm (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore (Inner Hole)\u003c\/th\u003e\n\u003ctd\u003e3 mm, 4 mm, 5 mm, or 6 mm (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eIdler Type\u003c\/th\u003e\n\u003ctd\u003eSmooth (Glatt) or Toothed (Gezahnt) (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eAluminum alloy, anodized\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBearing\u003c\/th\u003e\n\u003ctd\u003eFlanged ball bearing (idler variants)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOuter Diameter\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHub Width\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eAnodized (silver\/black)\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 between the 6 mm and 10 mm belt width variants?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eMatch the belt width to your existing timing belt. Most compact desktop 3D printers (Ender 3, Prusa i3 style) use 6 mm GT2 belts, while larger-format or higher-torque builds often use 10 mm belts. Check your printer's specification or measure your current belt width before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between the smooth (Glatt) and toothed (Gezahnt) idler types?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eSmooth idlers redirect the belt path without engaging the teeth — ideal for tensioner positions. Toothed idlers mesh with the belt and are used as driven pulleys or where positive engagement is needed at a redirection point. Select based on your printer's belt routing design.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhich bore size should I select for my stepper motor shaft?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eMost NEMA 17 stepper motors used in 3D printers have a 5 mm shaft diameter. If your motor has a 5 mm shaft, choose the 5 mm bore variant. For other motor types or custom builds, measure the shaft diameter with calipers before selecting. Available bores are 3 mm, 4 mm, 5 mm, and 6 mm.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre these pulleys compatible with open-belt CoreXY and Cartesian printer designs?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. The 20-tooth GT2 profile is the standard used in CoreXY designs (Voron, RatRig, etc.) and Cartesian printers (Ender, Prusa). Verify your belt width and bore requirements against your printer's BOM or documentation before purchasing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow corrosion-resistant are these pulleys for long-term use?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe aluminum alloy body with anodized finish provides good resistance to oxidation and light moisture exposure typical of indoor workshop environments. They are not rated for outdoor or high-humidity industrial use. For best longevity, keep the bearing idlers lightly lubricated and free of debris.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use these pulleys to replace OEM parts on my printer without modifications?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThese pulleys are dimensionally matched to standard GT2 20T specifications used across most open-source printer platforms. In most cases they are direct drop-in replacements. However, always verify the bore size, belt width, and hub length against your specific printer model's requirements before installation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat quantity is included per order?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eEach order is for one (1) pulley unit. If you need multiple pulleys for a full printer build (typically 2–4 per machine), please adjust the quantity at checkout accordingly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your model, idler type, and belt width \u0026amp; bore size above, then add to cart.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"HomeDIYer","offers":[{"title":"2GT-20T \/ Glatt \/ 6mm \u0026 5mm","offer_id":52446050386194,"sku":"KFCBJT00088x1","price":2.24,"currency_code":"USD","in_stock":true},{"title":"2GT-20T \/ Gezahnt \/ 6mm \u0026 4mm","offer_id":52446050418962,"sku":"KFCBJT00089x1","price":2.92,"currency_code":"USD","in_stock":true},{"title":"2GT-20T \/ Glatt \/ 10mm \u0026 6mm","offer_id":52446050451730,"sku":"KFCBJT00090x1","price":3.06,"currency_code":"USD","in_stock":true},{"title":"2GT-20T \/ Glatt \/ 6mm \u0026 4mm","offer_id":52446050484498,"sku":"KFCBJT00091x1","price":2.92,"currency_code":"USD","in_stock":true},{"title":"2GT-20T \/ Glatt \/ 10mm \u0026 3mm","offer_id":52446050517266,"sku":"KFCBJT00092x1","price":2.92,"currency_code":"USD","in_stock":true},{"title":"2GT-20T \/ Glatt \/ 10mm \u0026 5mm","offer_id":52446050550034,"sku":"KFCBJT00093x1","price":2.92,"currency_code":"USD","in_stock":true},{"title":"2GT-20T \/ Gezahnt \/ 6mm \u0026 3mm","offer_id":52446050582802,"sku":"KFCBJT00097x1","price":2.92,"currency_code":"USD","in_stock":true},{"title":"2GT-20T \/ Gezahnt \/ 6mm \u0026 5mm","offer_id":52446050615570,"sku":"KFCBJT00101x1","price":2.92,"currency_code":"USD","in_stock":true},{"title":"2GT-20T \/ Glatt \/ 6mm \u0026 3mm","offer_id":52446050648338,"sku":"KFCBJT00103x1","price":2.92,"currency_code":"USD","in_stock":true},{"title":"2GT-20T \/ Gezahnt \/ 10mm \u0026 6mm","offer_id":52446050681106,"sku":"KFCBJT00104x1","price":2.92,"currency_code":"USD","in_stock":true},{"title":"2GT-20T \/ Gezahnt \/ 10mm \u0026 5mm","offer_id":52446050713874,"sku":"KFCBJT00105x1","price":2.92,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Bild7von7_d871d583-a09b-4ac0-81ba-499edced121c.jpg?v=1784117393","url":"https:\/\/homediyer.com\/products\/gt2-timing-pulley-drive-sprocket-3d-printer-bearing","provider":"HomeDIYer","version":"1.0","type":"link"}