{"product_id":"aluminum-a-type-5-3-step-pagoda-pulley-wheel-150mm-outer-dia-for-timing-v-belt","title":"Aluminum A Type 5-3 Step Pagoda Pulley Wheel 150mm Outer Dia for Timing V-Belt","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\n  \u003cdiv class=\"hdiy-overview\"\u003e\n    \u003ch2\u003eA Type Step Pagoda Pulley Wheel — Multi-Speed V-Belt Drive for Lathes, Mills \u0026amp; DIY Machines\u003c\/h2\u003e\n    \u003cp\u003eWhen a fixed-speed motor limits your machining flexibility, a step pagoda pulley is the mechanical solution that lets you dial in the exact RPM you need without touching the motor. Whether you are a hobbyist retrofitting a bench lathe, a small-shop machinist tuning a drill press, or a maker building a custom belt-drive system, these A-type step pulley wheels give you multiple speed ratios from a single drive setup.\u003c\/p\u003e\n    \u003cp\u003eEach pulley is precision-turned from either aluminum alloy or cast iron, depending on the variant selected. The stepped (pagoda) profile features 3 or 5 grooves sized to accept standard A-type V-belts. Outer diameter ranges from 55 mm (≈2.17 in) up to 150 mm (≈5.91 in) across the step set, with bore options from 16 mm to 28 mm, each machined with a matching keyway for positive torque transmission. No-bore blanks are also available for custom machining to your shaft size.\u003c\/p\u003e\n    \u003cp\u003eTypical applications include bench lathe speed-change assemblies, drill press step-pulley conversions, bandsaw variable-speed drives, and small CNC or woodworking machine belt-drive systems where an A-type step pulley wheel with keyway bore is required for reliable, slip-free power transfer.\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    Compatible with standard \u003cstrong\u003eA-type (A-section) V-belts\u003c\/strong\u003e. Verify your shaft diameter and keyway dimensions before ordering. No-bore variants require custom boring to your shaft size.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-features\"\u003e\n    \u003ch2\u003e✅ Key Features of These A Type Step Pagoda Pulley Wheels\u003c\/h2\u003e\n    \u003cdiv class=\"hdiy-list\"\u003e\n      \u003cdiv\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\n        \u003cstrong\u003eDual Material Options\u003c\/strong\u003e\u003cbr\u003e\n        Choose aluminum alloy for lightweight, corrosion-resistant applications or cast iron for added mass, vibration damping, and higher load capacity — both machined to the same dimensional standards.\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\n        \u003cstrong\u003e3-Step \u0026amp; 5-Step Configurations\u003c\/strong\u003e\u003cbr\u003e\n        Select a 3-groove set (e.g., 55×80×105 mm OD) or a 5-groove set (e.g., 55×85×105×135×150 mm OD) to achieve the speed ratio range your machine requires.\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e🎯\u003c\/span\u003e\n        \u003cstrong\u003ePrecision-Machined Keyway Bore\u003c\/strong\u003e\u003cbr\u003e\n        Bore sizes from 16 mm to 28 mm are paired with matching keyways (5 mm or 8 mm wide) for positive, slip-free shaft engagement. No-bore blanks available for custom machining.\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e\n        \u003cstrong\u003eA-Type V-Belt Groove Profile\u003c\/strong\u003e\u003cbr\u003e\n        Grooves are cut to the standard A-section V-belt profile, ensuring full contact with the belt sidewalls for efficient power transfer and reduced belt wear.\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e🛡️\u003c\/span\u003e\n        \u003cstrong\u003eCorrosion \u0026amp; Wear Resistance\u003c\/strong\u003e\u003cbr\u003e\n        Aluminum variants offer natural oxidation resistance for workshop environments. Cast iron variants provide a hardened running surface that resists groove wear under sustained belt tension.\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e🔧\u003c\/span\u003e\n        \u003cstrong\u003eDrop-In Replacement Compatibility\u003c\/strong\u003e\u003cbr\u003e\n        Standard A-type groove geometry and common bore sizes make these pulleys direct replacements for worn step pulleys on lathes, drill presses, and similar belt-driven machinery.\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 — Step Pagoda Pulley Wheel\u003c\/h2\u003e\n    \u003ctable\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003cth\u003eBelt Type\u003c\/th\u003e\n\u003ctd\u003eA-type (A-section) V-belt\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eStep Configuration\u003c\/th\u003e\n\u003ctd\u003e3-step or 5-step (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eOuter Diameter Range\u003c\/th\u003e\n\u003ctd\u003e55 mm – 150 mm (≈2.17 in – 5.91 in) across steps\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eBore Diameter\u003c\/th\u003e\n\u003ctd\u003e16 mm \/ 19 mm \/ 24 mm \/ 25 mm \/ 28 mm \/ No bore (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eKeyway Width\u003c\/th\u003e\n\u003ctd\u003e5 mm or 8 mm (matched to bore; see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eAluminum alloy or Cast iron (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eGroove Profile\u003c\/th\u003e\n\u003ctd\u003eA-type V-belt standard\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eSurface Finish\u003c\/th\u003e\n\u003ctd\u003eMachined (aluminum); as-cast \/ machined (iron)\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\n  \u003cdiv class=\"hdiy-faq\"\u003e\n    \u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eHow do I choose between the 3-step and 5-step pulley?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThe number of steps determines how many speed ratios you can achieve with a single belt. A 3-step pulley gives you three RPM options, while a 5-step pulley gives you five. If your machine requires a wider speed range or finer increments, choose the 5-step variant. For simpler setups with limited space, the 3-step is more compact.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhich bore size should I order for my machine shaft?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eMeasure your motor or machine shaft diameter precisely with a caliper. Select the bore size that matches — 16 mm, 19 mm, 24 mm, 25 mm, or 28 mm. Each bored variant includes a machined keyway. If your shaft diameter does not match any listed bore, order the No-bore blank and have it custom-bored to your specification by a machine shop.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat is the difference between the aluminum and cast iron versions?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eAluminum pulleys are lighter, naturally corrosion-resistant, and easier to handle — ideal for lighter-duty or portable machines. Cast iron pulleys are heavier, which adds flywheel effect and vibration damping, making them better suited for sustained-load applications such as metal lathes or heavy drill presses where smooth, stable rotation matters.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWill this pulley fit a standard A-type V-belt?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes. All groove profiles on these step pulleys are machined to the standard A-section V-belt geometry. They are compatible with any A-type V-belt of the appropriate length. Do not use B-type or other section belts, as the groove angle and depth differ and will cause premature wear or slippage.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eCan I use this pulley without a keyway (no-bore option)?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThe No-bore variant ships as a blank hub with no bore or keyway machined. You will need to have it bored and keyway-cut to your exact shaft dimensions by a lathe or machining service. This option is ideal when your shaft size falls outside the standard bore options or when you need a custom fit for a non-standard application.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eHow do I confirm the correct outer diameter set for my drive ratio?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eDrive ratio is determined by the ratio of the driver pulley OD to the driven pulley OD. For example, pairing a 55 mm step on the motor with a 105 mm step on the machine gives approximately a 1:1.9 reduction. List your required input and output RPMs, divide to get the ratio, then select the step pair that matches. The variant listing shows the full OD set for each option (e.g., 55×80×105 mm or 55×85×105×135×150 mm).\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eIs the keyway included, or do I need to cut it separately?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eAll bored variants (16 mm, 19 mm, 24 mm, 25 mm, 28 mm) come with the keyway already machined at the factory. You simply need a matching key stock of the correct width (5 mm or 8 mm as specified in the variant name) to complete the shaft-to-pulley connection. No additional machining is required for bored variants.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-cta\"\u003e\n    🛒 Select your Type, Size, and Bore \u0026amp; Amount 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 3-step and 5-step pulley?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The number of steps determines how many speed ratios you can achieve with a single belt. A 3-step pulley gives you three RPM options, while a 5-step pulley gives you five. If your machine requires a wider speed range or finer increments, choose the 5-step variant. For simpler setups with limited space, the 3-step is more compact.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Which bore size should I order for my machine shaft?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Measure your motor or machine shaft diameter precisely with a caliper. Select the bore size that matches — 16 mm, 19 mm, 24 mm, 25 mm, or 28 mm. Each bored variant includes a machined keyway. If your shaft diameter does not match any listed bore, order the No-bore blank and have it custom-bored to your specification by a machine shop.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the difference between the aluminum and cast iron versions?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Aluminum pulleys are lighter, naturally corrosion-resistant, and easier to handle — ideal for lighter-duty or portable machines. Cast iron pulleys are heavier, which adds flywheel effect and vibration damping, making them better suited for sustained-load applications such as metal lathes or heavy drill presses.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Will this pulley fit a standard A-type V-belt?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. All groove profiles are machined to the standard A-section V-belt geometry. They are compatible with any A-type V-belt of the appropriate length. Do not use B-type or other section belts, as the groove angle and depth differ.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I use this pulley without a keyway (no-bore option)?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The No-bore variant ships as a blank hub with no bore or keyway machined. You will need to have it bored and keyway-cut to your exact shaft dimensions by a lathe or machining service.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I confirm the correct outer diameter set for my drive ratio?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Drive ratio is determined by the ratio of the driver pulley OD to the driven pulley OD. List your required input and output RPMs, divide to get the ratio, then select the step pair that matches. The variant listing shows the full OD set for each option.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is the keyway included, or do I need to cut it separately?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"All bored variants come with the keyway already machined at the factory. You simply need a matching key stock of the correct width (5 mm or 8 mm as specified in the variant name) to complete the shaft-to-pulley connection.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"HomeDIYer","offers":[{"title":"Aluminum 5 slots \/ 55x85x105x135x150mm \/ 16 mm x keyway 5 mm \u0026 1 PCS","offer_id":52447041290514,"sku":"GYJLTHXCDZH1644x1","price":81.22,"currency_code":"USD","in_stock":true},{"title":"Aluminum 5 slots \/ 55x85x105x135x150mm \/ 19 mm x keyway 6 mm \u0026 1 PCS","offer_id":52447041323282,"sku":"GYJLTHXCDZH1645x1","price":81.22,"currency_code":"USD","in_stock":true},{"title":"Aluminum 5 slots \/ 55x85x105x135x150mm \/ 24 mm x keyway 8 mm \u0026 1 PCS","offer_id":52447041356050,"sku":"GYJLTHXCDZH1646x1","price":81.22,"currency_code":"USD","in_stock":true},{"title":"Iron 5 slots \/ 55x85x105x135x150mm \/ 16 mm x keyway 5 mm \u0026 1 PCS","offer_id":52447041388818,"sku":"GYJLTHXCDZH1648x1","price":129.24,"currency_code":"USD","in_stock":true},{"title":"Iron 5 slots \/ 55x85x105x135x150mm \/ 19 mm x keyway 6 mm \u0026 1 PCS","offer_id":52447041421586,"sku":"GYJLTHXCDZH1649x1","price":129.24,"currency_code":"USD","in_stock":true},{"title":"Iron 5 slots \/ 55x85x105x135x150mm \/ 24 mm x keyway 8 mm \u0026 1 PCS","offer_id":52447041454354,"sku":"GYJLTHXCDZH1650x1","price":129.24,"currency_code":"USD","in_stock":true},{"title":"Iron 5 slots \/ 55x85x105x135x150mm \/ 25 mm x keyway 5 mm \u0026 1 PCS","offer_id":52447041487122,"sku":"GYJLTHXCDZH1651x1","price":129.24,"currency_code":"USD","in_stock":true},{"title":"Iron 3 slots \/ 55x80x105mm \/ 16 mm x keyway 5 mm \u0026 1 PCS","offer_id":52447041519890,"sku":"GYJLTHXCDZH1653x1","price":79.57,"currency_code":"USD","in_stock":true},{"title":"Iron 3 slots \/ 55x80x105mm \/ 19 mm x keyway 6 mm \u0026 1 PCS","offer_id":52447041552658,"sku":"GYJLTHXCDZH1654x1","price":79.57,"currency_code":"USD","in_stock":true},{"title":"Iron 3 slots \/ 55x80x105mm \/ 24 mm x keyway 8 mm \u0026 1 PCS","offer_id":52447041585426,"sku":"GYJLTHXCDZH1655x1","price":79.57,"currency_code":"USD","in_stock":true},{"title":"Iron 3 slots \/ 55x80x105mm \/ No bore \u0026 1 PCS","offer_id":52447041618194,"sku":"GYJLTHXCDZH1656x1","price":78.47,"currency_code":"USD","in_stock":true},{"title":"Iron 3 slots \/ 80x105x130mm \/ 19 mm x keyway 6 mm \u0026 1 PCS","offer_id":52447041650962,"sku":"GYJLTHXCDZH1658x1","price":122.36,"currency_code":"USD","in_stock":true},{"title":"Iron 3 slots \/ 80x105x130mm \/ 24 mm x keyway 8 mm \u0026 1 PCS","offer_id":52447041683730,"sku":"GYJLTHXCDZH1659x1","price":124.0,"currency_code":"USD","in_stock":true},{"title":"Iron 3 slots \/ 80x105x130mm \/ 28 mm x keyway 8 mm \u0026 1 PCS","offer_id":52447041716498,"sku":"GYJLTHXCDZH1660x1","price":125.75,"currency_code":"USD","in_stock":true},{"title":"Iron 3 slots \/ 80x105x130mm \/ No bore \u0026 1 PCS","offer_id":52447041749266,"sku":"GYJLTHXCDZH1661x1","price":84.66,"currency_code":"USD","in_stock":true},{"title":"Iron 3 slots \/ 80x105x130mm \/ 16 mm x keyway 5 mm \u0026 1 PCS","offer_id":52447041782034,"sku":"GYJLTHXCDZH1662x1","price":84.66,"currency_code":"USD","in_stock":true},{"title":"Iron 5 slots \/ 55x80x105x130x150mm \/ No bore \u0026 1 PCS","offer_id":52447041814802,"sku":"GYJLTHXCDZH1652x1","price":148.1,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture1of5_63cd44a1-b2a8-43ee-bd7b-6b0f0587ed8b.jpg?v=1783934241","url":"https:\/\/homediyer.com\/products\/aluminum-a-type-5-3-step-pagoda-pulley-wheel-150mm-outer-dia-for-timing-v-belt","provider":"HomeDIYer","version":"1.0","type":"link"}