{"product_id":"mellow-gt2-20t-idler-pulley-5mm-bore-8-5mm-height-6mm-2gt-timing-belt","title":"Mellow GT2 20T Idler Pulley 5mm Bore 8.5mm – 6mm 2GT Belt","description":"\n\u003ch2\u003eMellow GT2 20-Tooth Idler Timing Pulley – 5mm Bore | 6mm 2GT Belt Compatible\u003c\/h2\u003e\n\n\u003cp\u003eKeep your 3D printer motion system running smoothly with the \u003cstrong\u003eMellow GT2 20T Idler Pulley\u003c\/strong\u003e. Precision-machined from \u003cstrong\u003ealuminum alloy\u003c\/strong\u003e, this toothed idler is engineered to work seamlessly with Gates 6mm 2GT timing belts, delivering consistent low-vibration performance for sharper print quality and longer belt life.\u003c\/p\u003e\n\n\u003ch3\u003eWhy Choose a Toothed Idler Over a Plain Bearing?\u003c\/h3\u003e\n\u003cp\u003eToothed idlers gently cup the belt teeth as the belt traverses the curve, preventing wear and deformation that plain bearings can cause over time. The flanged design maintains constant belt tension throughout the full stroke — something a standard bearing simply cannot replicate. With a high-precision surface finish of \u003cstrong\u003eRa 0.4 µm\u003c\/strong\u003e, this idler glides with minimal resistance and exceptional durability.\u003c\/p\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Teeth:\u003c\/strong\u003e 20T\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBore:\u003c\/strong\u003e 5 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 8.5 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGear Width:\u003c\/strong\u003e 7 mm (fits 6 mm belt)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBelt Compatibility:\u003c\/strong\u003e 6 mm Gates 2GT \/ GT2 timing belt\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Aluminum Alloy\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Silver\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModel Number:\u003c\/strong\u003e 20TI\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAssembly Required:\u003c\/strong\u003e No\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eMade in Mainland China\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat's in the Box?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × GT2 20T Idler Timing Pulley\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003e⚠ Purchasing Tip:\u003c\/strong\u003e Please double-check your required tooth count (T), belt width (W), and bore size (B) before placing your order to ensure perfect compatibility with your printer's motion system.\u003c\/p\u003e\n\n\u003ch3\u003eCompatible Applications\u003c\/h3\u003e\n\u003cp\u003eIdeal for Cartesian and CoreXY 3D printers, CNC routing machines, laser engravers, and any motion-control system using GT2 \/ 2GT timing belts. A reliable upgrade or direct replacement for worn idler pulleys.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/10-pack-65mm-oscillating-multi-tool-saw-blades-high-carbon-steel\"\u003e10-Pack 65mm Oscillating Multi-Tool Saw Blades | Carbon Steel\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/adjustable-woodworking-compass-layout-gauge-carpenter\"\u003eAdjustable Woodworking Compass Layout Gauge for Carpenters\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/ball-end-hex-screwdriver-bit-magnetic-reduced-shank-steel\"\u003eBall End Hex Screwdriver Bit – Magnetic Reduced Shank Steel\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/personal-protective-equipment\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on personal protective equipment\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: Is this GT2 20T idler pulley compatible with Gates 2GT timing belts?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The Mellow GT2 20T idler pulley is specifically designed for 6 mm wide Gates 2GT \/ GT2 timing belts. The 7 mm gear width provides the correct clearance and flanging to guide a 6 mm belt precisely and keep it tracking straight.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What is the difference between a toothed idler and a smooth (toothless) idler?\u003c\/h4\u003e\n\u003cp\u003eA: A toothed idler engages the belt's teeth directly, protecting them from deformation and distributing load evenly as the belt curves around the pulley. A smooth idler contacts the flat back of the belt and is used when the toothed face needs to remain disengaged. Both types have their place in 3D printer motion systems; this listing is for the toothed variant.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What 3D printers is this idler suitable for?\u003c\/h4\u003e\n\u003cp\u003eA: This Mellow 20T GT2 idler with a 5 mm bore is widely used on popular Cartesian and CoreXY printers (such as Voron, Ender series, and similar builds) that use GT2 \/ 2GT belt systems. Always verify your printer's required bore size, belt width, and tooth count before purchasing.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Does this pulley require any assembly?\u003c\/h4\u003e\n\u003cp\u003eA: No assembly is required. The idler pulley arrives ready to install. Simply mount it onto the appropriate 5 mm shaft or bolt in your printer's motion system.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Is this GT2 20T idler pulley compatible with Gates 2GT timing belts?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. The Mellow GT2 20T idler pulley is specifically designed for 6 mm wide Gates 2GT \/ GT2 timing belts. The 7 mm gear width provides the correct clearance and flanging to guide a 6 mm belt precisely and keep it tracking straight.\"}}, {\"@type\": \"Question\", \"name\": \"What is the difference between a toothed idler and a smooth (toothless) idler?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"A toothed idler engages the belt's teeth directly, protecting them from deformation and distributing load evenly as the belt curves around the pulley. A smooth idler contacts the flat back of the belt and is used when the toothed face needs to remain disengaged. Both types have their place in 3D printer motion systems; this listing is for the toothed variant.\"}}, {\"@type\": \"Question\", \"name\": \"What 3D printers is this idler suitable for?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This Mellow 20T GT2 idler with a 5 mm bore is widely used on popular Cartesian and CoreXY printers (such as Voron, Ender series, and similar builds) that use GT2 \/ 2GT belt systems. Always verify your printer's required bore size, belt width, and tooth count before purchasing.\"}}, {\"@type\": \"Question\", \"name\": \"Does this pulley require any assembly?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No assembly is required. The idler pulley arrives ready to install. Simply mount it onto the appropriate 5 mm shaft or bolt in your printer's motion system.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/wb8bmu-rg.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Home page\", \"item\": \"https:\/\/wb8bmu-rg.myshopify.com\/collections\/frontpage\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"Mellow GT2 20T Idler Pulley 5mm Bore 8.5mm – 6mm 2GT Belt\", \"item\": \"https:\/\/wb8bmu-rg.myshopify.com\/products\/mellow-gt2-20t-idler-pulley-5mm-bore-8-5mm-height-6mm-2gt-timing-belt\"}]}\u003c\/script\u003e","brand":"Xpnd","offers":[{"title":"H8.5mm with t","offer_id":67748629053677,"sku":"14:173#H8.5mm with t","price":8.21,"currency_code":"USD","in_stock":true},{"title":"H8.5mm without t","offer_id":67748629086445,"sku":"14:10#H8.5mm without t","price":8.21,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0840\/1269\/5789\/files\/Aa7c789b6f51046fcb477aa6ef34708a9c_805703c7-bd3d-4300-bdbc-e098ced93483.webp?v=1791897649","url":"https:\/\/xpndservice.com\/products\/mellow-gt2-20t-idler-pulley-5mm-bore-8-5mm-height-6mm-2gt-timing-belt","provider":"XPND","version":"1.0","type":"link"}