{"product_id":"0-5-mod-32-teeth-spur-gear-transmission-gear-with-step-bore-5-6-8mm-motor-gears","title":"0.5 Mod 32 Teeth Spur Gear Transmission Gear With Step Bore 5\/6\/8mm Motor Gears","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003e0.5 Mod 32-Tooth Spur Gear — Precision Transmission for DIY Motor Drives\u003c\/h2\u003e\n\u003cp\u003eWhen a loose or mismatched gear causes skipped steps, binding, or inconsistent torque in your automation project, the root cause is almost always a poorly toleranced bore or an incorrect module. Hobbyists, makers, and small-workshop engineers building motor-driven mechanisms need a spur gear that drops straight onto a standard motor shaft without shimming, filing, or guesswork.\u003c\/p\u003e\n\u003cp\u003eThis 0.5 module, 32-tooth spur gear is machined from engineering-grade metal and features a stepped bore available in 5 mm (0.197 in), 6 mm (0.236 in), and 8 mm (0.315 in) to match the most common DC motor and stepper motor shaft diameters. The gear measures approximately 16 mm (0.63 in) in pitch diameter, with a face width typically in the 5–8 mm range depending on the variant. Tooth profile follows the standard 20° pressure-angle involute form for smooth, low-noise meshing.\u003c\/p\u003e\n\u003cp\u003eTypical use cases include small CNC router axis drives, 3D printer extruder gear trains, robotic arm joint reduction stages, and compact conveyor indexing mechanisms — anywhere a reliable 0.5 mod gear mesh is needed for a DIY automation or educational lab build.\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\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for 0.5 module gear systems. Meshes with any 0.5 mod mating gear (rack, pinion, or spur). Step bore fits motor shafts of 5 mm, 6 mm, or 8 mm diameter. Confirm shaft diameter before ordering.\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These 0.5 Mod 32-Tooth Spur Gears\u003c\/h2\u003e\n\u003cul class=\"hdiy-list\"\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\u003cstrong\u003eStep Bore Design\u003c\/strong\u003e — Three bore options (5 \/ 6 \/ 8 mm) let you match the gear directly to your motor shaft without adapters or custom machining.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\u003cstrong\u003e0.5 Module, 32 Teeth\u003c\/strong\u003e — Standard involute tooth profile with 20° pressure angle ensures smooth, low-backlash meshing with any compatible 0.5 mod counterpart gear.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🏗️\u003c\/span\u003e\u003cstrong\u003eMetal Construction\u003c\/strong\u003e — Machined from durable metal alloy for reliable torque transmission in continuous-duty motor drive applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e\u003cstrong\u003eFlexible Pack Quantities\u003c\/strong\u003e — Available in 1, 2, 3, 4, 5, 8, and 10-piece packs so you can stock exactly what your project or workshop requires.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🎯\u003c\/span\u003e\u003cstrong\u003eDrop-In Fit\u003c\/strong\u003e — Bore tolerances are held to standard shaft-fit specifications, so the gear seats securely on the motor shaft with a set screw or interference fit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e\u003cstrong\u003eBroad Application Range\u003c\/strong\u003e — Suited for DC motor drives, stepper motor gearboxes, 3D printer extruders, small CNC axes, and educational robotics platforms.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ch2\u003e📐 Technical Specifications — 0.5 Mod Spur Gear\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eModule\u003c\/th\u003e\n\u003ctd\u003e0.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNumber of Teeth\u003c\/th\u003e\n\u003ctd\u003e32\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePitch Diameter\u003c\/th\u003e\n\u003ctd\u003e16 mm (0.63 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePressure Angle\u003c\/th\u003e\n\u003ctd\u003e20°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Options\u003c\/th\u003e\n\u003ctd\u003e5 mm \/ 6 mm \/ 8 mm (step bore)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFace Width\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eMetal alloy (machined)\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\u003eGear Type\u003c\/th\u003e\n\u003ctd\u003eSpur gear (involute tooth form)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePack Quantity\u003c\/th\u003e\n\u003ctd\u003e1 \/ 2 \/ 3 \/ 4 \/ 5 \/ 8 \/ 10 pcs\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\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 the right bore size for my motor shaft?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eMeasure your motor shaft diameter with a caliper. This gear is available in 5 mm, 6 mm, and 8 mm step bores. Select the bore that matches your shaft diameter exactly — a step bore is designed to seat at a specific diameter, so an undersized bore will not fit and an oversized bore will produce shaft play. If your shaft is between sizes, choose the smaller bore and consult a machinist for light reaming.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat does \"0.5 module\" mean, and will this gear mesh with my existing gears?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eModule (mod) is the metric standard for gear tooth size — it equals the pitch diameter divided by the number of teeth. Two gears mesh correctly only when they share the same module and pressure angle. This gear is 0.5 mod with a 20° pressure angle, so it will mesh with any other 0.5 mod, 20° pressure-angle gear: spur gears, racks, or pinions. It will not mesh correctly with 1.0 mod, 0.8 mod, or imperial diametral-pitch gears.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eIs this gear strong enough for continuous motor drive use?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes, for the torque loads typical of small DC motors and stepper motors in the 5–42 mm NEMA frame range. The metal alloy construction handles continuous-duty meshing without the tooth deformation seen in plastic gears. For very high-torque or high-speed applications (above approximately 3,000 RPM under load), verify that the gear's face width and material grade match your torque requirement before committing to a design.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWill the gear corrode if used in a humid or outdoor environment?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThe gear is machined metal and may show surface oxidation over time in humid or wet environments without protective treatment. For indoor workshop, lab, or enclosed enclosure use, no additional treatment is typically needed. For outdoor or high-humidity applications, apply a light machine oil or corrosion-inhibiting grease to the tooth faces and bore as part of your regular maintenance routine.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eHow is the gear secured to the motor shaft?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThe step bore is designed for a set-screw or interference-fit attachment method, which is standard for small motor gears in this size class. Ensure your motor shaft has a flat (D-cut) or a drilled set-screw point for a secure, slip-free connection. If your shaft is fully round, a small flat can be filed to provide positive set-screw engagement.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhich pack quantity should I order for a typical DIY project?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eFor a single-axis drive or one motor, the 1-piece pack is sufficient. If you are building a multi-axis robot, a 3D printer with dual extruders, or want spares on hand, the 2–5 piece packs offer a lower per-unit cost. The 8 and 10-piece packs are suited for workshop stock, classroom kits, or batch production of small machines where having replacement gears immediately available saves downtime.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eCan I use this gear in a 3D printer extruder or CNC axis drive?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes. The 0.5 mod, 32-tooth spur gear is a common choice for compact extruder gear trains and small CNC axis reduction stages where a low gear pitch diameter is needed to keep the mechanism compact. Verify that your mating gear (the driven gear on the hobbed bolt or lead screw coupler) is also 0.5 mod and that the center distance between shafts matches the sum of the two pitch radii.\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 bore size and packing quantity 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 the right bore size for my motor shaft?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Measure your motor shaft diameter with a caliper. This gear is available in 5 mm, 6 mm, and 8 mm step bores. Select the bore that matches your shaft diameter exactly. If your shaft is between sizes, choose the smaller bore and consult a machinist for light reaming.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What does 0.5 module mean, and will this gear mesh with my existing gears?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Module (mod) is the metric standard for gear tooth size. This gear is 0.5 mod with a 20 degree pressure angle, so it will mesh with any other 0.5 mod, 20 degree pressure-angle gear. It will not mesh correctly with 1.0 mod, 0.8 mod, or imperial diametral-pitch gears.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is this gear strong enough for continuous motor drive use?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes, for the torque loads typical of small DC motors and stepper motors in the 5-42 mm NEMA frame range. The metal alloy construction handles continuous-duty meshing without the tooth deformation seen in plastic gears.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Will the gear corrode if used in a humid or outdoor environment?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"For indoor workshop or enclosed enclosure use, no additional treatment is typically needed. For outdoor or high-humidity applications, apply a light machine oil or corrosion-inhibiting grease to the tooth faces and bore as part of your regular maintenance routine.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How is the gear secured to the motor shaft?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The step bore is designed for a set-screw or interference-fit attachment method. Ensure your motor shaft has a flat (D-cut) or a drilled set-screw point for a secure, slip-free connection.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Which pack quantity should I order for a typical DIY project?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"For a single-axis drive or one motor, the 1-piece pack is sufficient. The 2-5 piece packs offer a lower per-unit cost. The 8 and 10-piece packs are suited for workshop stock, classroom kits, or batch production of small machines.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I use this gear in a 3D printer extruder or CNC axis drive?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. The 0.5 mod, 32-tooth spur gear is a common choice for compact extruder gear trains and small CNC axis reduction stages. Verify that your mating gear is also 0.5 mod and that the center distance between shafts matches the sum of the two pitch radii.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"HomeDIYer","offers":[{"title":"0.5M 32T, Bore 5mm \/ 1 pcs","offer_id":52443243217170,"sku":"GLFBFHHGLCDPJ00055x1","price":10.8,"currency_code":"USD","in_stock":true},{"title":"0.5M 32T, Bore 6mm \/ 1 pcs","offer_id":52443243249938,"sku":"GLFBFHHGLCDPJ00056x1","price":10.8,"currency_code":"USD","in_stock":true},{"title":"0.5M 32T, Bore 8mm \/ 1 pcs","offer_id":52443243282706,"sku":"GLFBFHHGLCDPJ00057x1","price":10.8,"currency_code":"USD","in_stock":true},{"title":"0.5M 32T, Bore 5mm \/ 2 pcs","offer_id":52443243315474,"sku":"GLFBFHHGLCDPJ00055x2","price":17.61,"currency_code":"USD","in_stock":true},{"title":"0.5M 32T, Bore 6mm \/ 2 pcs","offer_id":52443243348242,"sku":"GLFBFHHGLCDPJ00056x2","price":17.61,"currency_code":"USD","in_stock":true},{"title":"0.5M 32T, Bore 8mm \/ 2 pcs","offer_id":52443243381010,"sku":"GLFBFHHGLCDPJ00057x2","price":17.61,"currency_code":"USD","in_stock":true},{"title":"0.5M 32T, Bore 5mm \/ 3 pcs","offer_id":52443243413778,"sku":"GLFBFHHGLCDPJ00055x3","price":25.38,"currency_code":"USD","in_stock":true},{"title":"0.5M 32T, Bore 6mm \/ 3 pcs","offer_id":52443243446546,"sku":"GLFBFHHGLCDPJ00056x3","price":25.38,"currency_code":"USD","in_stock":true},{"title":"0.5M 32T, Bore 8mm \/ 3 pcs","offer_id":52443243479314,"sku":"GLFBFHHGLCDPJ00057x3","price":25.38,"currency_code":"USD","in_stock":true},{"title":"0.5M 32T, Bore 5mm \/ 4 pcs","offer_id":52443243512082,"sku":"GLFBFHHGLCDPJ00055x4","price":33.13,"currency_code":"USD","in_stock":true},{"title":"0.5M 32T, Bore 6mm \/ 4 pcs","offer_id":52443243544850,"sku":"GLFBFHHGLCDPJ00056x4","price":33.13,"currency_code":"USD","in_stock":true},{"title":"0.5M 32T, Bore 8mm \/ 4 pcs","offer_id":52443243577618,"sku":"GLFBFHHGLCDPJ00057x4","price":33.13,"currency_code":"USD","in_stock":true},{"title":"0.5M 32T, Bore 5mm \/ 5 pcs","offer_id":52443243610386,"sku":"GLFBFHHGLCDPJ00055x5","price":40.88,"currency_code":"USD","in_stock":true},{"title":"0.5M 32T, Bore 6mm \/ 5 pcs","offer_id":52443243643154,"sku":"GLFBFHHGLCDPJ00056x5","price":40.88,"currency_code":"USD","in_stock":true},{"title":"0.5M 32T, Bore 8mm \/ 5 pcs","offer_id":52443243675922,"sku":"GLFBFHHGLCDPJ00057x5","price":40.88,"currency_code":"USD","in_stock":true},{"title":"0.5M 32T, Bore 5mm \/ 8 pcs","offer_id":52443243708690,"sku":"GLFBFHHGLCDPJ00055x8","price":64.15,"currency_code":"USD","in_stock":true},{"title":"0.5M 32T, Bore 6mm \/ 8 pcs","offer_id":52443243741458,"sku":"GLFBFHHGLCDPJ00056x8","price":64.15,"currency_code":"USD","in_stock":true},{"title":"0.5M 32T, Bore 8mm \/ 8 pcs","offer_id":52443243774226,"sku":"GLFBFHHGLCDPJ00057x8","price":64.15,"currency_code":"USD","in_stock":true},{"title":"0.5M 32T, Bore 5mm \/ 10 pcs","offer_id":52443243806994,"sku":"GLFBFHHGLCDPJ00055x10","price":79.66,"currency_code":"USD","in_stock":true},{"title":"0.5M 32T, Bore 6mm \/ 10 pcs","offer_id":52443243839762,"sku":"GLFBFHHGLCDPJ00056x10","price":79.66,"currency_code":"USD","in_stock":true},{"title":"0.5M 32T, Bore 8mm \/ 10 pcs","offer_id":52443243872530,"sku":"GLFBFHHGLCDPJ00057x10","price":79.66,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Main-04_5f686ba5-1897-4827-a7a9-51b3b8eae8d1.jpg?v=1784040105","url":"https:\/\/homediyer.com\/products\/0-5-mod-32-teeth-spur-gear-transmission-gear-with-step-bore-5-6-8mm-motor-gears","provider":"HomeDIYer","version":"1.0","type":"link"}