{"product_id":"gt2-aluminium-timing-belt-pulley-16t-wide-6-10mm-bore-3mm-to-6mm-for-3d-printer","title":"GT2 Aluminium Timing Belt Pulley 16T Wide 6\/10mm Bore 3mm To 6mm For 3D Printer","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eGT2 16-Tooth Aluminium Timing Belt Pulley — Reliable 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, engineers, and workshop builders who demand repeatable, slip-free motion need a pulley that holds tight tolerances across thousands of print hours. This GT2 16-tooth aluminium timing belt pulley is engineered for exactly that use case.\u003c\/p\u003e\n\u003cp\u003eEach pulley is machined from 6061 aluminium alloy, giving it a lightweight yet rigid body that resists deformation under continuous belt tension. The GT2 tooth profile (2 mm pitch) meshes cleanly with standard GT2 open-loop and closed-loop belts. Available in two belt widths — 6 mm (~0.24 in) and 10 mm (~0.39 in) — and six bore sizes ranging from 3 mm to 6.35 mm (~0.118 in to 0.250 in), this pulley covers the most common shaft diameters used in desktop motion systems.\u003c\/p\u003e\n\u003cp\u003eTypical applications include Cartesian and CoreXY 3D printer X\/Y axis drives, laser engraver gantry systems, small CNC router belt-drive axes, and DIY robotic arm joint drives. Whether you are replacing a stripped pulley on a Creality Ender or building a custom GT2 belt-driven linear actuator, this 16T pulley delivers the consistent tooth engagement needed for accurate positioning.\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-loop and closed-loop timing belts, 6 mm and 10 mm belt widths. Fits standard 5 mm stepper motor shafts (with 5 mm bore variant) and common shaft sizes 3 mm, 3.175 mm (1\/8 in), 4 mm, 5 mm, 6 mm, and 6.35 mm (1\/4 in).\u003c\/div\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These GT2 16T Aluminium Timing Belt Pulleys\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-list\"\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e \u003cstrong\u003eMachined 6061 Aluminium Body\u003c\/strong\u003e\n\u003cp\u003eLightweight alloy construction keeps rotating mass low, reducing stepper motor load and improving acceleration response in fast-moving print heads and gantries.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e \u003cstrong\u003eGT2 2 mm Pitch, 16 Teeth\u003c\/strong\u003e\n\u003cp\u003eThe 16-tooth GT2 profile is the industry standard for desktop 3D printer motion systems, providing a balance of torque transmission and compact pulley diameter (~10.2 mm pitch diameter).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📏\u003c\/span\u003e \u003cstrong\u003eDual Belt Width Options — 6 mm \u0026amp; 10 mm\u003c\/strong\u003e\n\u003cp\u003eChoose the belt width that matches your existing drivetrain. The 10 mm wide variant offers greater belt contact area for higher-load or wider-belt CNC applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🎯\u003c\/span\u003e \u003cstrong\u003eSix Bore Sizes for Versatile Shaft Compatibility\u003c\/strong\u003e\n\u003cp\u003eAvailable in 3 mm, 3.175 mm, 4 mm, 5 mm, 6 mm, and 6.35 mm bores to match NEMA 17 stepper shafts, servo shafts, and custom drive shafts without adapters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔧\u003c\/span\u003e \u003cstrong\u003eSet Screw Retention\u003c\/strong\u003e\n\u003cp\u003eEach pulley includes a set screw (typically M3) for secure shaft locking, preventing rotational slip during direction reversals and rapid acceleration cycles.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e \u003cstrong\u003eDrop-In Replacement for Common 3D Printer Platforms\u003c\/strong\u003e\n\u003cp\u003eDimensionally compatible with GT2 pulleys used on widely adopted Cartesian and CoreXY printer frames, making it a straightforward swap for maintenance or upgrades.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ch2\u003e📐 Technical Specifications — GT2 Timing Belt Pulley\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBelt 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\u003e16T\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePitch Diameter\u003c\/th\u003e\n\u003ctd\u003e~10.19 mm (0.401 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutside Diameter\u003c\/th\u003e\n\u003ctd\u003e~12 mm (0.47 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBelt Width Compatibility\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 Size\u003c\/th\u003e\n\u003ctd\u003e3 mm \/ 3.175 mm \/ 4 mm \/ 5 mm \/ 6 mm \/ 6.35 mm (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003e6061 Aluminium Alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eNatural anodised \/ silver\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSet Screw\u003c\/th\u003e\n\u003ctd\u003eIncluded (typically M3)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFlange\u003c\/th\u003e\n\u003ctd\u003eSee variant options\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\u003eApplication\u003c\/th\u003e\n\u003ctd\u003e3D printers, CNC routers, laser engravers, robotic drives\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\u003eWhich bore size should I choose for a NEMA 17 stepper motor?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eStandard NEMA 17 stepper motors have a 5 mm output shaft diameter. Select the \u003cstrong\u003e5 mm bore\u003c\/strong\u003e variant for a direct fit. If your motor has a D-cut shaft, the set screw will lock against the flat for a secure, slip-free connection.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between the 6 mm and 10 mm belt width variants?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe belt width must match your existing GT2 belt. Most desktop 3D printers (Ender, Prusa-style, Voron, etc.) use \u003cstrong\u003e6 mm wide GT2 belts\u003c\/strong\u003e. The \u003cstrong\u003e10 mm wide\u003c\/strong\u003e variant is suited for heavier-duty CNC or laser engraver builds where a wider belt is used to handle greater lateral loads and reduce belt stretch.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs this pulley compatible with GT2 closed-loop (loop) belts as well as open-loop belts?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. The GT2 2 mm pitch tooth profile is identical for both open-loop and closed-loop GT2 belts. This pulley will mesh correctly with either type, provided the belt width matches your selected variant (6 mm or 10 mm).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow strong is the aluminium pulley compared to a plastic one?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003e6061 aluminium alloy offers significantly higher tensile strength and dimensional stability than injection-moulded plastic pulleys. Aluminium pulleys resist deformation under sustained belt tension, maintain tooth geometry over time, and dissipate heat more effectively — making them the preferred choice for high-cycle or high-speed motion systems.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWill this pulley corrode or oxidise over time?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003e6061 aluminium naturally forms a thin oxide layer that protects against further corrosion in typical indoor workshop and printer enclosure environments. For humid or mildly corrosive environments, the anodised finish provides additional surface protection. This pulley is not rated for outdoor or marine exposure.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use this pulley on a 3.175 mm (1\/8 inch) shaft?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. The \u003cstrong\u003e3.175 mm bore\u003c\/strong\u003e variant is specifically sized for 1\/8-inch shafts, which are common in some servo motors and custom drive assemblies. This is a direct fit — no bushing or adapter is required.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDoes the set screw come pre-installed, and what tool do I need?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe set screw is typically included with the pulley. It is an M3 hex socket set screw, so you will need a \u003cstrong\u003e1.5 mm or 2 mm hex key (Allen wrench)\u003c\/strong\u003e to tighten it. Torque the set screw firmly against the shaft flat or surface to prevent slipping during operation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your \u003cstrong\u003ebelt width and bore size\u003c\/strong\u003e above, then add to cart.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"HomeDIYer","offers":[{"title":"GT2 16T \/ 6mm \/ 3mm","offer_id":52445974397202,"sku":"LXXYYDS3320x1","price":2.43,"currency_code":"USD","in_stock":true},{"title":"GT2 16T \/ 6mm \/ 3.175mm","offer_id":52445974429970,"sku":"LXXYYDS3321x1","price":2.43,"currency_code":"USD","in_stock":true},{"title":"GT2 16T \/ 6mm \/ 4mm","offer_id":52445974462738,"sku":"LXXGLBZSJ065314x1","price":2.43,"currency_code":"USD","in_stock":true},{"title":"GT2 16T \/ 6mm \/ 5mm","offer_id":52445974495506,"sku":"LXXGLBZSJ065315x1","price":2.43,"currency_code":"USD","in_stock":true},{"title":"GT2 16T \/ 6mm \/ 6mm","offer_id":52445974528274,"sku":"LXXGLBZSJ065316x1","price":2.43,"currency_code":"USD","in_stock":true},{"title":"GT2 16T \/ 6mm \/ 6.35mm","offer_id":52445974561042,"sku":"LXXYYDS3322x1","price":2.43,"currency_code":"USD","in_stock":true},{"title":"GT2 16T \/ 10mm \/ 3mm","offer_id":52445974593810,"sku":"LXXYYDS3323x1","price":2.43,"currency_code":"USD","in_stock":true},{"title":"GT2 16T \/ 10mm \/ 3.175mm","offer_id":52445974626578,"sku":"LXXYYDS3324x1","price":2.43,"currency_code":"USD","in_stock":true},{"title":"GT2 16T \/ 10mm \/ 5mm","offer_id":52445974659346,"sku":"LXXGLBZSJ065317x1","price":2.43,"currency_code":"USD","in_stock":true},{"title":"GT2 16T \/ 10mm \/ 6mm","offer_id":52445974692114,"sku":"LXXYYDS3325x1","price":2.43,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture6of7_cac4c111-9db1-4639-90aa-98b387a9d426.jpg?v=1784090085","url":"https:\/\/homediyer.com\/products\/gt2-aluminium-timing-belt-pulley-16t-wide-6-10mm-bore-3mm-to-6mm-for-3d-printer","provider":"HomeDIYer","version":"1.0","type":"link"}