{"product_id":"gt2-idler-timing-pulley-bearing-16t-60t-3-15mm-bore","title":"GT2 Idler Timing Pulley Bearing 16T-60T 3-15mm Bore for 6\/11mm Width Timing Belt","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eGT2 Idler Timing Pulley — Precision Bearing Idler for 2GT Belt Drive Systems\u003c\/h2\u003e\n\u003cp\u003eWhen belt tension drifts or your motion system loses repeatability, the culprit is often a poorly fitted idler. Engineers and makers building 3D printers, CNC routers, laser cutters, and robotic actuators need an idler pulley that holds alignment under continuous load without adding backlash. This GT2 idler timing pulley with integrated bearing is designed for exactly that application.\u003c\/p\u003e\n\u003cp\u003eEach pulley is machined from stainless steel and available in tooth counts from 16T to 60T, with bore diameters ranging from 3 mm to 15 mm (approximately 0.12 in to 0.59 in). Two idler types are offered — smooth (flanged, no teeth) for redirecting belt path, and toothed for maintaining positive engagement. Belt width compatibility covers 6 mm and 10 mm (approximately 0.24 in and 0.39 in) 2GT timing belts.\u003c\/p\u003e\n\u003cp\u003eTypical use cases include GT2 belt tensioner assemblies on CoreXY 3D printers, X\/Y-axis idler routing on desktop CNC mills, and compact servo-driven linear actuators where a low-profile idler bearing reduces system footprint. The integrated bearing eliminates the need for a separate bearing press-fit, simplifying assembly for small-batch manufacturing and DIY builds alike.\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\u003eCompatibility:\u003c\/strong\u003e Designed for 2GT \/ GT2 timing belts. Fits 6 mm and 10 mm belt widths. Bore sizes 3–15 mm suit M3–M15 shafts or shoulder bolts. Verify your belt pitch (2 mm) and bore requirement before ordering.\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These GT2 Idler Timing Pulleys\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-list\"\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\n\u003cstrong\u003eStainless Steel Construction\u003c\/strong\u003e\n\u003cp\u003eMachined from stainless steel for corrosion resistance and dimensional stability in humid or lightly oiled environments.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🎯\u003c\/span\u003e\n\u003cstrong\u003eIntegrated Bearing\u003c\/strong\u003e\n\u003cp\u003ePre-installed bearing allows the pulley to spin freely on a fixed shaft — no separate bearing sourcing or press-fitting required.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e\n\u003cstrong\u003eSmooth \u0026amp; Toothed Variants\u003c\/strong\u003e\n\u003cp\u003eChoose smooth (flanged) for belt redirection without engagement, or toothed for positive 2GT tooth meshing and tension control.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\n\u003cstrong\u003eWide Tooth Count Range: 16T–60T\u003c\/strong\u003e\n\u003cp\u003eCovers a broad range of drive ratios and belt wrap angles, from compact 16-tooth idlers to large 60-tooth routing pulleys.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🕳️\u003c\/span\u003e\n\u003cstrong\u003eMultiple Bore Options: 3–15 mm\u003c\/strong\u003e\n\u003cp\u003eAvailable in 3 mm, 4 mm, 5 mm, and 6 mm bore sizes (see variant options) to match standard shoulder bolts and shaft diameters used in motion systems.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🖨️\u003c\/span\u003e\n\u003cstrong\u003eDrop-In Fit for 3D Printers \u0026amp; CNC\u003c\/strong\u003e\n\u003cp\u003eDimensionally compatible with common CoreXY, Cartesian, and H-bot printer frames, as well as open-source CNC gantry designs using GT2 belt drives.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ch2\u003e📐 Technical Specifications — GT2 Idler Timing Pulley\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBelt Profile\u003c\/th\u003e\n\u003ctd\u003e2GT (GT2), 2 mm pitch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTooth Count\u003c\/th\u003e\n\u003ctd\u003e16T, 20T (see variant options for full range up to 60T)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eIdler Type\u003c\/th\u003e\n\u003ctd\u003eSmooth (flanged) \/ Toothed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBelt Width Compatibility\u003c\/th\u003e\n\u003ctd\u003e6 mm \/ 10 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Diameter\u003c\/th\u003e\n\u003ctd\u003e3 mm, 4 mm, 5 mm, 6 mm (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eStainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBearing Type\u003c\/th\u003e\n\u003ctd\u003eIntegrated rolling bearing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFlange\u003c\/th\u003e\n\u003ctd\u003eFlanged on smooth type; toothed type flanged per variant\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\u003ctr\u003e\n\u003cth\u003eSurface Finish\u003c\/th\u003e\n\u003ctd\u003eNatural stainless (uncoated)\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\u003cdetails\u003e\n\u003csummary\u003eHow do I choose between the smooth and toothed idler?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eUse a \u003cstrong\u003esmooth (flanged) idler\u003c\/strong\u003e when you need to redirect the belt path without engaging the teeth — for example, on the non-driven side of a CoreXY gantry. Use a \u003cstrong\u003etoothed idler\u003c\/strong\u003e when the belt must wrap around the idler with tooth engagement, which helps maintain tension and prevents belt skipping on longer runs.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat bore size should I select for my printer or CNC build?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eMatch the bore to your shoulder bolt or shaft diameter. Most CoreXY printers (e.g., Voron, RatRig) use M3 or M5 shoulder bolts, so a 3 mm or 5 mm bore is typical. Check your frame's BOM or hardware spec sheet to confirm before ordering.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs this pulley compatible with standard GT2 belts?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes. These pulleys are designed for the 2GT \/ GT2 belt profile with a 2 mm pitch. They are compatible with both open-loop and closed-loop GT2 timing belts in 6 mm and 10 mm widths. Ensure your belt width matches the variant you select.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow strong is the integrated bearing under continuous load?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThe integrated bearing is rated for the radial loads typical of 3D printer and light CNC applications. For high-speed or heavy-load industrial applications, verify the bearing's dynamic load rating against your system requirements. Contact us to confirm specifications for demanding use cases.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWill stainless steel resist corrosion in my application?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eStainless steel offers good resistance to moisture, light oils, and mild chemical exposure — suitable for most workshop, laboratory, and indoor automation environments. For aggressive chemical or saltwater exposure, additional sealing of the bearing may be advisable.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use this idler pulley to tension a GT2 belt on a laser cutter?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes. GT2 idler pulleys are widely used in laser cutter X\/Y gantry systems. Select the smooth flanged variant for belt redirection at corners, and ensure the bore matches your tensioner bolt diameter. The 6 mm belt width variants are most common in compact laser cutter frames.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between 16T and 20T idler pulleys?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThe tooth count affects the pulley's outer diameter and the belt wrap angle. A \u003cstrong\u003e16T idler\u003c\/strong\u003e has a smaller diameter (~10.2 mm pitch diameter) and is suited for tight spaces. A \u003cstrong\u003e20T idler\u003c\/strong\u003e (~12.7 mm pitch diameter) provides a larger wrap angle, which can reduce belt stress at the contact point. Choose based on your available clearance and belt routing geometry.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-cta\"\u003e\n🛒 Select your Model-Teeth, Idler Type, and Belt Width \u0026amp; Inner Hole above, then add to cart.\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I choose between the smooth and toothed idler?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Use a smooth (flanged) idler when you need to redirect the belt path without engaging the teeth. Use a toothed idler when the belt must wrap around the idler with tooth engagement to maintain tension and prevent belt skipping.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What bore size should I select for my printer or CNC build?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Match the bore to your shoulder bolt or shaft diameter. Most CoreXY printers use M3 or M5 shoulder bolts, so a 3 mm or 5 mm bore is typical. Check your frame's BOM to confirm.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is this pulley compatible with standard GT2 belts?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. These pulleys are designed for the 2GT \/ GT2 belt profile with a 2 mm pitch, compatible with 6 mm and 10 mm width GT2 timing belts.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How strong is the integrated bearing under continuous load?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The integrated bearing is rated for radial loads typical of 3D printer and light CNC applications. For high-speed or heavy-load industrial use, verify the bearing's dynamic load rating against your system requirements.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Will stainless steel resist corrosion in my application?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Stainless steel offers good resistance to moisture, light oils, and mild chemical exposure, suitable for most workshop, laboratory, and indoor automation environments.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I use this idler pulley to tension a GT2 belt on a laser cutter?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. GT2 idler pulleys are widely used in laser cutter X\/Y gantry systems. Select the smooth flanged variant for belt redirection at corners and ensure the bore matches your tensioner bolt diameter.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the difference between 16T and 20T idler pulleys?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"A 16T idler has a smaller diameter (~10.2 mm pitch diameter) suited for tight spaces. A 20T idler (~12.7 mm pitch diameter) provides a larger wrap angle, reducing belt stress at the contact point.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"HomeDIYer","offers":[{"title":"2GT-20T \/ Smooth \/ 6mm \u0026 5mm","offer_id":52446282449170,"sku":"GYWXWBJT00088x1","price":4.47,"currency_code":"USD","in_stock":true},{"title":"2GT-20T \/ Toothed \/ 6mm \u0026 4mm","offer_id":52446282481938,"sku":"GYWXWBJT00089x1","price":4.47,"currency_code":"USD","in_stock":true},{"title":"2GT-20T \/ Smooth \/ 10mm \u0026 6mm","offer_id":52446282514706,"sku":"GYWXWBJT00090x1","price":4.61,"currency_code":"USD","in_stock":true},{"title":"2GT-20T \/ Smooth \/ 6mm \u0026 4mm","offer_id":52446282547474,"sku":"GYWXWBJT00091x1","price":4.61,"currency_code":"USD","in_stock":true},{"title":"2GT-20T \/ Smooth \/ 10mm \u0026 3mm","offer_id":52446282580242,"sku":"GYWXWBJT00092x1","price":4.61,"currency_code":"USD","in_stock":true},{"title":"2GT-20T \/ Smooth \/ 10mm \u0026 5mm","offer_id":52446282613010,"sku":"GYWXWBJT00093x1","price":4.61,"currency_code":"USD","in_stock":true},{"title":"2GT-20T \/ Toothed \/ 6mm \u0026 3mm","offer_id":52446282645778,"sku":"GYWXWBJT00097x1","price":4.61,"currency_code":"USD","in_stock":true},{"title":"2GT-20T \/ Toothed \/ 6mm \u0026 5mm","offer_id":52446282678546,"sku":"GYWXWBJT00101x1","price":4.61,"currency_code":"USD","in_stock":true},{"title":"2GT-20T \/ Smooth \/ 6mm \u0026 3mm","offer_id":52446282711314,"sku":"GYWXWBJT00103x1","price":4.61,"currency_code":"USD","in_stock":true},{"title":"2GT-20T \/ Toothed \/ 10mm \u0026 6mm","offer_id":52446282744082,"sku":"GYWXWBJT00104x1","price":4.61,"currency_code":"USD","in_stock":true},{"title":"2GT-20T \/ Toothed \/ 10mm \u0026 5mm","offer_id":52446282776850,"sku":"GYWXWBJT00105x1","price":4.61,"currency_code":"USD","in_stock":true},{"title":"2GT-16T \/ Toothed \/ 6mm \u0026 3mm","offer_id":52446282809618,"sku":"GYWXWBJT00110x1","price":4.61,"currency_code":"USD","in_stock":true},{"title":"2GT-16T \/ Smooth \/ 6mm \u0026 3mm","offer_id":52446282842386,"sku":"GYWXWBJT00111x1","price":4.61,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture1of11_e2627034-e979-4e8a-9df2-9464a19ace27.jpg?v=1783971160","url":"https:\/\/homediyer.com\/products\/gt2-idler-timing-pulley-bearing-16t-60t-3-15mm-bore","provider":"HomeDIYer","version":"1.0","type":"link"}