{"product_id":"xl-10-teeth-timing-belt-pulley-aluminum-synchronous-wheel","title":"XL 10 Teeth Timing Belt Pulley 11mm Wide 3-8mm Bore Aluminum Synchronous Wheel","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eXL 10-Tooth Timing Belt Pulley — Aluminum Synchronous Wheel for Precision Motion Control\u003c\/h2\u003e\n\u003cp\u003eWhen a slipping or mismatched pulley throws off your CNC router, 3D printer, or custom drive system, every axis move becomes unreliable. Engineers, makers, and automation builders who need repeatable, backlash-free motion depend on correctly sized synchronous pulleys matched to their belt pitch and shaft diameter. This XL 10-tooth aluminum timing belt pulley is designed for exactly that — giving you a solid, lightweight drive component that locks onto your shaft and meshes cleanly with standard XL pitch belts.\u003c\/p\u003e\n\u003cp\u003eEach pulley is machined from aluminum alloy, keeping rotating mass low while maintaining the rigidity needed for consistent tooth engagement. The belt-contact width is either 11mm (~0.43 in) or 16mm (~0.63 in) depending on the variant selected, and bore options span 3mm to 8mm (approximately 0.118 in to 0.315 in), covering the most common motor shaft and lead-screw diameters. A set-screw hub secures the pulley to the shaft without requiring a keyway.\u003c\/p\u003e\n\u003cp\u003eTypical use cases include XL belt-driven CNC axis assemblies where a 10-tooth pulley pairs with a larger driven pulley for speed reduction, RepRap-style 3D printer extruder or axis drives requiring a compact synchronous wheel, and lightweight robotics or automation rigs where aluminum construction reduces inertia on stepper or servo motor shafts.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003e⚙️\u003c\/span\u003e \u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for \u003cstrong\u003eXL pitch (5.08mm \/ 0.200 in)\u003c\/strong\u003e timing belts. Verify your belt pitch, required bore diameter, and belt width before ordering. Not compatible with GT2, T5, or other non-XL pitch belts.\u003c\/div\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These XL Aluminum Timing Belt Pulleys\u003c\/h2\u003e\n\u003cul class=\"hdiy-list\"\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\u003cstrong\u003e10-Tooth XL Profile\u003c\/strong\u003e — Matches standard XL pitch (5.08mm) belts for smooth, synchronized power transmission with minimal tooth skip risk.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🪶\u003c\/span\u003e\u003cstrong\u003eAluminum Alloy Construction\u003c\/strong\u003e — Lightweight yet rigid material reduces rotational inertia, making it well-suited for stepper and servo motor applications where fast direction changes matter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\u003cstrong\u003eMultiple Bore Sizes\u003c\/strong\u003e — Available in 3mm, 3.175mm (1\/8 in), 4mm, 5mm, 6mm, 6.35mm (1\/4 in), and 8mm bores to fit a wide range of motor and shaft diameters without adapters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📏\u003c\/span\u003e\u003cstrong\u003eTwo Belt-Width Options\u003c\/strong\u003e — Choose 11mm-wide or 16mm-wide tooth profile to match your existing belt width and maximize contact area for your load requirements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔧\u003c\/span\u003e\u003cstrong\u003eSet-Screw Hub Retention\u003c\/strong\u003e — Integrated set-screw clamping secures the pulley firmly to the shaft, allowing straightforward installation and repositioning without specialized tooling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e\u003cstrong\u003eFlexible Quantity Packs\u003c\/strong\u003e — Available in 1, 2, 3, or 5-piece packs so you can stock spares or outfit a multi-axis machine in a single order.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ch2\u003e📐 Technical Specifications — XL Timing Belt Pulley\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBelt Pitch\u003c\/th\u003e\n\u003ctd\u003eXL — 5.08mm (0.200 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNumber of Teeth\u003c\/th\u003e\n\u003ctd\u003e10T\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBelt Width (Teeth-Width)\u003c\/th\u003e\n\u003ctd\u003e11mm (~0.43 in) or 16mm (~0.63 in) — See variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Diameter\u003c\/th\u003e\n\u003ctd\u003e3mm \/ 3.175mm \/ 4mm \/ 5mm \/ 6mm \/ 6.35mm \/ 8mm — See 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\u003eHub Retention\u003c\/th\u003e\n\u003ctd\u003eSet-screw\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePitch Diameter (approx.)\u003c\/th\u003e\n\u003ctd\u003e~16.2mm (~0.64 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutside Diameter (approx.)\u003c\/th\u003e\n\u003ctd\u003e~18mm (~0.71 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eQuantity per Pack\u003c\/th\u003e\n\u003ctd\u003e1 \/ 2 \/ 3 \/ 5 PCS — See 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\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 know if this pulley fits my timing belt?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThis pulley is designed exclusively for \u003cstrong\u003eXL pitch belts\u003c\/strong\u003e (5.08mm \/ 0.200 in tooth pitch). Check the label or part number on your existing belt — it should include \"XL\" in the designation (e.g., 100XL, 150XL). If your belt is GT2, T5, T2.5, or any other pitch, this pulley will not mesh correctly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhich bore size should I choose for my motor shaft?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eMeasure your motor or drive shaft diameter with calipers. Common stepper motor shaft sizes are 5mm and 6.35mm (1\/4 in); servo motors often use 6mm or 8mm shafts. Select the bore that matches your shaft exactly — a loose fit will cause runout even with the set-screw tightened. If your shaft is imperial (e.g., 1\/8 in = 3.175mm or 1\/4 in = 6.35mm), those specific bore options are available in this listing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between the 11mm and 16mm belt-width variants?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe number refers to the usable tooth-contact width of the pulley, which must match (or be slightly wider than) your belt's width. An 11mm-wide pulley suits standard narrow XL belts, while the 16mm variant is used with wider XL belts that carry higher loads or require greater lateral stability. Using a pulley narrower than your belt will cause the belt to ride over the flanges and derail.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs aluminum strong enough for my application?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eAluminum alloy pulleys are well-suited for light-to-medium duty applications such as CNC routers, 3D printers, laser cutters, and small robotics. For heavy industrial drives with high torque, continuous shock loads, or abrasive environments, a steel pulley may be more appropriate. For the vast majority of hobbyist and maker-scale machines, aluminum provides an excellent balance of strength and low rotational inertia.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDoes this pulley include flanges to keep the belt tracking?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eXL timing belt pulleys of this type typically include flanges on both sides of the tooth profile to guide the belt and prevent lateral drift. Please confirm with the product images for your specific variant, as flange configuration can vary. If your application requires a flangeless pulley for side-by-side belt arrangements, contact us to confirm before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use this pulley with a stepper motor that has a D-shaped (flat) shaft?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThis pulley uses a round bore with a set-screw for retention. It will fit a D-shaft as long as the bore diameter matches the shaft's outer diameter — the set-screw can be tightened against the flat face of the D-shaft for a more secure grip than on a fully round shaft. Ensure the set-screw aligns with the flat when installing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eShould I order multiple pieces at once?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eIf you are building a multi-axis machine (e.g., a 3-axis CNC or a CoreXY 3D printer), ordering a 3-pack or 5-pack in a single variant saves on per-unit cost and ensures all pulleys come from the same production batch for consistent dimensions. Having a spare on hand also reduces downtime if a pulley is damaged during assembly or 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\u003eTeeth-Width, Bore size, and Qty\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":"10T-11mm \/ 3mm \/ 1PCS","offer_id":52444087255314,"sku":"TJJTCD20609x1","price":3.39,"currency_code":"USD","in_stock":true},{"title":"10T-11mm \/ 3.175mm \/ 1PCS","offer_id":52444087288082,"sku":"TJJTCD20610x1","price":3.39,"currency_code":"USD","in_stock":true},{"title":"10T-11mm \/ 4mm \/ 1PCS","offer_id":52444087320850,"sku":"TJJTCD10128x1","price":2.79,"currency_code":"USD","in_stock":true},{"title":"10T-11mm \/ 5mm \/ 1PCS","offer_id":52444087353618,"sku":"TJJTCD10129x1","price":2.79,"currency_code":"USD","in_stock":true},{"title":"10T-11mm \/ 6mm \/ 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