{"product_id":"aluminum-v-grooved-pulley-o-round-belt-pulleys-6mm-belt","title":"Aluminum V Grooved Pulley O Round Belt Pulleys For 6mm Width Belt OD 20mm-80mm","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eAluminum V-Grooved Pulley for 6mm O-Round Belt — Precision Drive Component for Makers and Engineers\u003c\/h2\u003e\n\u003cp\u003eWhen your motion system demands consistent belt tracking and slip-free power transfer, a poorly matched pulley becomes the weakest link. These aluminum V-grooved pulleys are designed for hobbyists, makers, and small-scale machine builders who need a reliable, dimensionally accurate drive wheel for O-round and round-section belts up to 6mm in width.\u003c\/p\u003e\n\u003cp\u003eEach pulley is machined from aluminum alloy with a clean V-groove profile sized to seat a 6mm O-round belt securely. Outer diameters range from 20mm to 100mm (approximately 0.79 in to 3.94 in), with center bore options from 5mm to 25mm (approximately 0.20 in to 0.98 in) to fit a wide range of shaft sizes. The lightweight aluminum construction keeps rotating mass low while providing adequate rigidity for moderate-load applications.\u003c\/p\u003e\n\u003cp\u003eTypical use cases include 3D printer filament drive and extruder assemblies, CNC router axis belt drives, DIY conveyor and indexing systems, and small robotic arm joint mechanisms — anywhere a compact, low-inertia V-groove pulley for round belt drives is needed.\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 6mm width O-round \/ round-section belts. Verify your shaft diameter matches the selected bore before ordering. Keyway and set-screw features vary by size — see variant options.\u003c\/div\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These Aluminum V-Grooved Pulleys\u003c\/h2\u003e\n\u003cul class=\"hdiy-list\"\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\u003cstrong\u003eAluminum Alloy Construction\u003c\/strong\u003e — Lightweight yet rigid material keeps rotational inertia low, reducing motor load in high-cycle drive applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\u003cstrong\u003ePrecision V-Groove Profile\u003c\/strong\u003e — Groove geometry is matched to 6mm O-round belt cross-section for centered belt seating and reduced lateral drift.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📏\u003c\/span\u003e\u003cstrong\u003eWide Size Range\u003c\/strong\u003e — OD from 20mm to 100mm (0.79–3.94 in) and bore from 5mm to 25mm (0.20–0.98 in) covers most hobbyist and light-industrial shaft configurations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚖️\u003c\/span\u003e\u003cstrong\u003eLow Rotating Mass\u003c\/strong\u003e — Compact aluminum body minimizes moment of inertia, making these pulleys well-suited for servo and stepper motor drive trains.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔧\u003c\/span\u003e\u003cstrong\u003eMachined Bore\u003c\/strong\u003e — Center bore is machined to dimensional tolerance for a consistent shaft fit; pair with a set screw or shaft collar as needed for your application.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e\u003cstrong\u003eVersatile Drive Applications\u003c\/strong\u003e — Compatible with 3D printer drives, CNC belt axes, conveyor systems, and DIY robotics wherever a round-belt V-groove pulley is required.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ch2\u003e📐 Technical Specifications — Aluminum V-Groove Pulley\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\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\u003eGroove Type\u003c\/th\u003e\n\u003ctd\u003eV-groove (O-round \/ round belt)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBelt Width Compatibility\u003c\/th\u003e\n\u003ctd\u003e6mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOuter Diameter (OD) Range\u003c\/th\u003e\n\u003ctd\u003e20mm – 100mm (0.79 in – 3.94 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Diameter Range\u003c\/th\u003e\n\u003ctd\u003e5mm – 25mm (0.20 in – 0.98 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOD × Bore (per variant)\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eQuantity per Order\u003c\/th\u003e\n\u003ctd\u003e1 Pcs\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\u003cdiv class=\"hdiy-faq\"\u003e\n\u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I choose the right outer diameter for my drive system?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe outer diameter (OD) determines your drive ratio and belt speed. A larger OD pulley on the driven shaft increases output speed; a smaller OD reduces it. Calculate your target ratio by dividing the driver OD by the driven OD. For most 3D printer and light CNC applications, ODs in the 20–40mm range are common on the motor side.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhich bore size should I select for my motor or shaft?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eMeasure your shaft diameter with calipers and select the matching bore. Common stepper motor shaft diameters are 5mm and 8mm; servo shafts vary from 6mm to 12mm. If your shaft is between listed bore sizes, select the next size up and use a shaft collar or sleeve to take up the gap.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre these pulleys compatible with belts other than O-round belts?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThese pulleys are specifically profiled for O-round (circular cross-section) belts up to 6mm in width. Flat belts, V-belts with trapezoidal profiles, or toothed timing belts are not compatible with this groove geometry. Using an incompatible belt type will result in poor tracking and accelerated wear.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow strong are aluminum pulleys compared to steel or plastic alternatives?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eAluminum alloy pulleys offer a good balance of strength and weight for light-to-moderate loads. They are significantly stronger and more dimensionally stable than printed plastic pulleys, and lighter than steel equivalents. For high-torque or heavy-load industrial applications, steel pulleys may be more appropriate. For hobbyist CNC, 3D printing, and robotics, aluminum is the standard choice.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWill these pulleys corrode or oxidize over time?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eAluminum naturally forms a thin oxide layer that provides moderate corrosion resistance in typical indoor environments. For humid or outdoor environments, an anodized finish provides additional protection. Check the variant listing for finish details. Avoid prolonged contact with strong acids or alkalis.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDo I need a set screw or keyway to secure the pulley to the shaft?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eSecuring method depends on the specific variant and your application torque. For low-torque applications, a friction fit or shaft collar may suffice. For higher torque, a set screw is recommended. Keyway availability varies by size — refer to the variant description or contact us to confirm before ordering if this is a critical requirement.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use these pulleys in a 3D printer extruder or filament drive?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. The compact OD options (20–30mm) and small bore sizes (5–8mm) are well-suited for extruder motor shafts and filament drive assemblies. The V-groove profile grips O-round belts reliably, making these a practical upgrade over printed plastic pulleys in direct-drive and Bowden extruder configurations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your Size (Outer Diameter × Bore) above, then add to cart.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"HomeDIYer","offers":[{"title":"20mm x 5mm \/ 1 Pcs","offer_id":52445253075218,"sku":"LRPPIDAILUN225x1","price":6.88,"currency_code":"USD","in_stock":true},{"title":"20mm x 6mm \/ 1 Pcs","offer_id":52445253107986,"sku":"LRPPIDAILUN226x1","price":6.88,"currency_code":"USD","in_stock":true},{"title":"20mm x 7mm \/ 1 Pcs","offer_id":52445253140754,"sku":"LRPPIDAILUN227x1","price":6.88,"currency_code":"USD","in_stock":true},{"title":"20mm x 8mm \/ 1 Pcs","offer_id":52445253173522,"sku":"LRPPIDAILUN228x1","price":6.88,"currency_code":"USD","in_stock":true},{"title":"20mm x 10mm 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