{"product_id":"double-v-groove-aluminum-drive-pulley-a-section-v-belt-od-40-100mm","title":"Double V-Groove Aluminum Drive Pulley For A-Section V-Belt Pulleys OD 40-100mm","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eDouble V-Groove Aluminum Drive Pulley for A-Section V-Belt — Precision Motion for Builders and Engineers\u003c\/h2\u003e\n\u003cp\u003eWhen a slipping or misaligned belt derails your build mid-project, the culprit is almost always an undersized or poorly matched pulley. Engineers, CNC builders, and automation hobbyists who need reliable, repeatable belt drive performance rely on a double V-groove aluminum drive pulley for A-section V-belt systems to keep their machines running true.\u003c\/p\u003e\n\u003cp\u003eEach pulley is machined from aluminum alloy with dual A-section V-grooves, accepting standard A-type V-belts. Outer diameters range from 40mm to 100mm (~1.57\" to 3.94\"), with bore diameters from 8mm to 55mm (~0.31\" to 2.17\") to suit a wide range of shaft sizes. The dual-groove design allows two parallel belts to run simultaneously, doubling torque transfer capacity without increasing pulley diameter.\u003c\/p\u003e\n\u003cp\u003eTypical use cases include DIY CNC router spindle drives, conveyor belt systems requiring dual-belt redundancy, motor-to-gearbox coupling in automation rigs, and custom go-kart or small engine drive trains where compact, lightweight power transmission is critical.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003e⚙️\u003c\/span\u003e Compatible with standard \u003cstrong\u003eA-section (A-type) V-belts\u003c\/strong\u003e. Verify your shaft diameter matches the selected bore size before ordering.\u003c\/div\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These Double V-Groove Aluminum Drive Pulleys\u003c\/h2\u003e\n\u003cul class=\"hdiy-list\"\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e \u003cstrong\u003eDual A-Section Grooves\u003c\/strong\u003e — Two parallel V-grooves accept standard A-type V-belts simultaneously, doubling torque capacity in a compact footprint.\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, enabling faster acceleration and lower bearing load compared to steel equivalents.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e \u003cstrong\u003eWide Size Range\u003c\/strong\u003e — OD 40–100mm and bore 8–55mm cover the majority of small-to-medium drive applications; select the exact combination from variant options.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🎯\u003c\/span\u003e \u003cstrong\u003ePrecision-Machined Bore\u003c\/strong\u003e — Bores are machined to close tolerances for minimal runout, reducing vibration and extending belt life in high-cycle applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e \u003cstrong\u003eVersatile Drive Ratio Flexibility\u003c\/strong\u003e — Pair different OD pulleys on driver and driven shafts to achieve your target speed ratio without custom fabrication.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🛠️\u003c\/span\u003e \u003cstrong\u003eDrop-In Replacement Ready\u003c\/strong\u003e — Standard A-section groove profile ensures compatibility with off-the-shelf A-type V-belts available at any industrial supplier.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ch2\u003e📐 Technical Specifications — Double V-Groove Aluminum Drive Pulley\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBelt Type\u003c\/th\u003e\n\u003ctd\u003eA-Section (A-Type) V-Belt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNumber of Grooves\u003c\/th\u003e\n\u003ctd\u003e2 (Double V-Groove)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOuter Diameter (OD)\u003c\/th\u003e\n\u003ctd\u003e40mm \/ 60mm \/ 80mm \/ 100mm (1.57\" \/ 2.36\" \/ 3.15\" \/ 3.94\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Diameter\u003c\/th\u003e\n\u003ctd\u003eSee variant options (8mm–55mm)\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\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eKeyway\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSet Screw\u003c\/th\u003e\n\u003ctd\u003eSee variant options\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\u003eApplication\u003c\/th\u003e\n\u003ctd\u003eCNC drives, conveyor systems, motor coupling, automation equipment\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 OD and bore diameter for my application?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eSelect the OD based on your required drive ratio — divide the driven shaft speed by the driver shaft speed, then multiply by your driver pulley OD to get the driven pulley OD. For bore diameter, measure your shaft diameter precisely with calipers and choose the matching bore. If your shaft uses a keyway, confirm keyway availability in the variant options or contact us before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat V-belt cross-section is compatible with these pulleys?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThese pulleys are machined specifically for \u003cstrong\u003eA-section (A-type) V-belts\u003c\/strong\u003e, which have a top width of approximately 13mm (0.5\") and a depth of approximately 8mm (0.31\"). Do not use B-section, C-section, or metric SPZ\/SPA belts — the groove angle and width will not match, causing rapid belt wear and potential slippage.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I run only one belt in a double-groove pulley?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. Running a single belt in one groove of a double-groove pulley is mechanically acceptable. The unused groove simply remains empty. This is a common approach when you want the option to add a second belt later for increased torque capacity without replacing the pulley.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs aluminum strong enough for my drive system?\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, small conveyors, and hobbyist automation rigs. For heavy industrial loads, continuous high-torque operation, or environments with abrasive debris, a cast iron or steel pulley may be more appropriate. If you are unsure whether aluminum suits your load requirements, contact us with your torque and RPM specifications.\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 dry and indoor environments. For outdoor use or exposure to moisture, coolants, or mild chemicals, the surface finish (anodized or bare) affects long-term durability. Check the variant options for finish details, or contact us to confirm suitability for your environment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDo these pulleys come with a set screw or keyway for shaft locking?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eSet screw and keyway availability varies by variant. Please refer to the variant options or product images for your selected OD and bore combination. If your application requires a specific locking method and it is not shown, contact us before purchasing to confirm.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the maximum RPM these pulleys are rated for?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eMaximum RPM depends on the OD, bore, belt tension, and balance of the specific variant. As a conservative guideline, aluminum V-belt pulleys in this size range are typically used at up to 3,000–5,000 RPM in light-duty applications. For high-speed spindle or motor applications, contact us with your RPM and load requirements for confirmation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your OD and bore diameter above, then add to cart.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"HomeDIYer","offers":[{"title":"40mm \/ 8mm \/ 1Pcs","offer_id":52445706584338,"sku":"FXLGB801-0","price":24.55,"currency_code":"USD","in_stock":true},{"title":"40mm \/ 10mm \/ 1Pcs","offer_id":52445706617106,"sku":"FXLGB801-1","price":24.55,"currency_code":"USD","in_stock":true},{"title":"40mm \/ 12mm \/ 1Pcs","offer_id":52445706649874,"sku":"FXLGB801-2","price":24.55,"currency_code":"USD","in_stock":true},{"title":"40mm \/ 14mm \/ 1Pcs","offer_id":52445706682642,"sku":"FXLGB801-3","price":24.55,"currency_code":"USD","in_stock":true},{"title":"40mm \/ 15mm \/ 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