{"product_id":"gt2-80t-timing-belt-pulley-2mm-pitch-cnc-3d-printer","title":"2GT 80T Zahnrad GT2 Riemenscheibe Zahnriemenrad Zahnriemen Pulley CNC 3D Drucker","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eGT2 80T Timing Belt Pulley — Precise Motion Control for CNC \u0026amp; 3D Printing\u003c\/h2\u003e\n\u003cp\u003eWhen your CNC router skips steps or your 3D printer loses positional accuracy, the culprit is often a mismatched or worn timing pulley. Makers, engineers, and workshop builders who demand repeatable, low-backlash motion rely on a correctly specified GT2 pulley to keep every axis on track.\u003c\/p\u003e\n\u003cp\u003eThis GT2 80-tooth timing belt pulley features a 2mm pitch profile machined to mesh cleanly with standard GT2 belts. Available in silver (aluminum alloy) and black (anodized aluminum) finishes, with bore options of 5mm or 8mm and compatible belt widths of 6mm or 10mm. The pulley diameter is approximately 50–52mm (~2 in), with an overall hub length typically in the 20–26mm (~0.8–1.0 in) range depending on variant.\u003c\/p\u003e\n\u003cp\u003eTypical applications include DIY CNC router X\/Y\/Z axes, FDM 3D printer extruder and motion systems, laser engraver gantry drives, and custom belt-driven automation rigs where an 80-tooth reduction ratio provides smooth, high-torque transmission.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003e✅\u003c\/span\u003e\n\u003cstrong\u003eCompatible with:\u003c\/strong\u003e Standard GT2 2mm-pitch open or closed-loop timing belts — 6mm and 10mm width. Fits 5mm and 8mm motor shafts (NEMA 17 \/ NEMA 23 stepper motors). Suitable for RepRap, Voron, Ender, and custom CNC builds.\n\u003c\/div\u003e\n\n\u003ch2\u003e✅ Key Features of These GT2 80T Timing Belt Pulleys\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\n\u003cdiv\u003e\n\u003cdiv class=\"hdiy-icon\"\u003e⚙️\u003c\/div\u003e\n\u003cstrong\u003e80-Tooth GT2 Profile\u003c\/strong\u003e\n\u003cp\u003e2mm pitch tooth geometry delivers smooth, low-noise belt engagement and accurate positional repeatability across long travel distances.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\u003cdiv class=\"hdiy-icon\"\u003e🔩\u003c\/div\u003e\n\u003cstrong\u003eDual Bore Options\u003c\/strong\u003e\n\u003cp\u003eAvailable in 5mm and 8mm bore diameters to fit the most common stepper motor shaft sizes used in CNC and 3D printing applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\u003cdiv class=\"hdiy-icon\"\u003e📏\u003c\/div\u003e\n\u003cstrong\u003e6mm \u0026amp; 10mm Belt Width Support\u003c\/strong\u003e\n\u003cp\u003eChoose the belt width that matches your existing drive system — 6mm for compact builds, 10mm for higher-load or wider-belt configurations.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\u003cdiv class=\"hdiy-icon\"\u003e🎨\u003c\/div\u003e\n\u003cstrong\u003eSilver \u0026amp; Black Finish\u003c\/strong\u003e\n\u003cp\u003eNatural aluminum (silver) and anodized black options available — the anodized finish adds a layer of surface hardness and corrosion resistance.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\u003cdiv class=\"hdiy-icon\"\u003e🏗️\u003c\/div\u003e\n\u003cstrong\u003eAluminum Alloy Construction\u003c\/strong\u003e\n\u003cp\u003eLightweight yet rigid aluminum alloy body keeps rotational inertia low while maintaining dimensional stability under continuous operation.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\u003cdiv class=\"hdiy-icon\"\u003e🔧\u003c\/div\u003e\n\u003cstrong\u003eSet Screw Retention\u003c\/strong\u003e\n\u003cp\u003eIncludes set screw(s) for secure shaft mounting — no press-fit required, making installation and repositioning straightforward for DIY builds.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003ch2\u003e📐 Technical Specifications — GT2 Timing Belt Pulley\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBelt 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\u003e80T\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePitch Diameter\u003c\/th\u003e\n\u003ctd\u003e~50.93mm (~2.01 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Diameter\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCompatible Belt Width\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHub Length\u003c\/th\u003e\n\u003ctd\u003eSee variant options\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\u003eNatural (Silver) \/ Anodized (Black)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMounting\u003c\/th\u003e\n\u003ctd\u003eSet screw\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\n\u003cdiv class=\"hdiy-faq\"\u003e\n\u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhich bore size should I choose — 5mm or 8mm?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eMatch the bore to your motor shaft diameter. NEMA 17 stepper motors (the most common in 3D printers and small CNC machines) typically use a 5mm shaft. NEMA 23 motors and some larger NEMA 17 variants use an 8mm shaft. Check your motor's datasheet before ordering.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat belt width is compatible with this pulley?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThis pulley is available in variants matched to either 6mm or 10mm wide GT2 belts. Select the variant that matches your existing belt width. Mixing belt and pulley widths (e.g., a 10mm belt on a 6mm-flanged pulley) can cause belt tracking issues and is not recommended.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eIs this pulley compatible with standard GT2 open-loop and closed-loop belts?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes. The 2mm GT2 tooth profile is an industry-standard geometry. This pulley meshes with any GT2-profile timing belt of the matching width, whether open-ended (sold by the meter) or closed-loop (fixed-length loop belts).\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eHow strong is the set screw connection? Will it slip under load?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eFor typical CNC and 3D printing loads, the set screw provides adequate retention when properly tightened against a flat on the motor shaft (if present) or directly onto the shaft. For high-torque or high-speed applications, ensure the set screw is torqued to spec and consider using a thread-locking compound for added security.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eDoes the anodized black finish affect dimensional accuracy?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eAnodizing adds a very thin oxide layer (typically 10–25 microns) to the aluminum surface. This has negligible effect on bore or tooth dimensions for standard motion-control use. The anodized finish also improves surface hardness and provides mild corrosion resistance compared to bare aluminum.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eCan I use this pulley in a Voron, Ender, or other popular 3D printer build?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThis pulley is compatible with any build that uses GT2 2mm-pitch belts and a matching bore shaft. Voron designs, Ender-series printers, and most RepRap-derived machines use GT2 belts with 5mm shafts — select the 5mm bore variant and the belt width specified in your build's BOM.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eHow do I select the right variant for my build?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYou need to match three parameters: (1) bore diameter to your motor shaft, (2) belt width to your existing or planned belt, and (3) finish (silver or black) to your preference. Use the variant selector above to choose Color, then Tooth Count (80T), then Bore \u0026amp; Belt Width combination.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-cta\"\u003e\n🛒 Select your color, bore size, and belt width above, then add to cart.\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"HomeDIYer","offers":[{"title":"Silber \/ 80 \/ 8mm \u0026 10mm","offer_id":52446050976018,"sku":"KFCBJT00862x1","price":7.87,"currency_code":"USD","in_stock":true},{"title":"Schwarz \/ 80 \/ 5mm \u0026 6mm","offer_id":52446051008786,"sku":"KFCBJT00863x1","price":7.87,"currency_code":"USD","in_stock":true},{"title":"Silber \/ 80 \/ 8mm \u0026 6mm","offer_id":52446051041554,"sku":"KFCBJT00864x1","price":6.65,"currency_code":"USD","in_stock":true},{"title":"Silber \/ 80 \/ 5mm \u0026 10mm","offer_id":52446051074322,"sku":"KFCBJT00865x1","price":7.87,"currency_code":"USD","in_stock":true},{"title":"Schwarz \/ 80 \/ 8mm \u0026 10mm","offer_id":52446051107090,"sku":"KFCBJT00866x1","price":8.55,"currency_code":"USD","in_stock":true},{"title":"Silber \/ 80 \/ 5mm \u0026 6mm","offer_id":52446051139858,"sku":"KFCBJT00867x1","price":7.87,"currency_code":"USD","in_stock":true},{"title":"Schwarz \/ 80 \/ 8mm \u0026 6mm","offer_id":52446051172626,"sku":"KFCBJT00868x1","price":7.87,"currency_code":"USD","in_stock":true},{"title":"Schwarz \/ 80 \/ 5mm \u0026 10mm","offer_id":52446051205394,"sku":"KFCBJT00869x1","price":8.55,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Bild2von5_0985d5d3-f88c-4432-b96f-12905458232d.jpg?v=1784117847","url":"https:\/\/homediyer.com\/products\/gt2-80t-timing-belt-pulley-2mm-pitch-cnc-3d-printer","provider":"HomeDIYer","version":"1.0","type":"link"}