{"product_id":"0-5-mod-brass-pinion-spur-gear-46-teeth-bore-4-5-6-8-10-12mm","title":"0.5 Mod Brass Pinion Spur Gear 46 Teeth Bore 4\/5\/6\/8\/10\/12mm Transmission Gear","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003e0.5 Mod Brass Pinion Spur Gear 46T — Precision Transmission for Compact Drive Systems\u003c\/h2\u003e\n\u003cp\u003eWhen your build demands tight gear mesh, minimal backlash, and reliable torque transfer in a compact footprint, a poorly spec'd gear becomes the weakest link. Hobbyists, robotics engineers, and prototype makers who work with 0.5 module drive trains need a pinion spur gear that holds dimensional tolerances under repeated cycling — not one that wears out after a few hours of run time.\u003c\/p\u003e\n\u003cp\u003eThis 0.5 Mod Brass Pinion Spur Gear features 46 teeth machined from solid brass stock, delivering a pitch diameter of approximately 23 mm (0.91 in). Bore options span 4 mm, 5 mm, 6 mm, 8 mm, 10 mm, and 12 mm (approx. 0.16–0.47 in), covering the most common shaft diameters used in compact gearboxes. Overall gear width is typically 5–8 mm (0.20–0.31 in) depending on variant.\u003c\/p\u003e\n\u003cp\u003eTypical applications include RC car transmission stages requiring a 0.5 mod 46-tooth spur gear replacement, small robotic joint actuators pairing this pinion with a matching rack or ring gear, and DIY CNC or 3D-printer extruder drives where a brass spur gear resists wear better than plastic alternatives.\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 standard 0.5 mod spur, rack, or pinion gear. Verify shaft diameter matches your selected bore before ordering.\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These 0.5 Mod Brass Pinion Spur Gears\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-list\"\u003e\n\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\n\u003cstrong\u003eSolid Brass Construction\u003c\/strong\u003e\n\u003cp\u003eMachined from brass alloy for inherent corrosion resistance, self-lubricating properties, and a strength-to-weight ratio suited to compact drive applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🎯\u003c\/span\u003e\n\u003cstrong\u003e46-Tooth 0.5 Module Profile\u003c\/strong\u003e\n\u003cp\u003eStandard involute tooth form ensures smooth mesh with any 0.5 mod counterpart gear, minimizing noise and vibration in high-cycle applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\n\u003cstrong\u003eSix Bore Sizes Available\u003c\/strong\u003e\n\u003cp\u003eChoose from 4 mm, 5 mm, 6 mm, 8 mm, 10 mm, or 12 mm bore to match your shaft without custom machining or adapters.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚖️\u003c\/span\u003e\n\u003cstrong\u003eCompact \u0026amp; Lightweight\u003c\/strong\u003e\n\u003cp\u003e~23 mm pitch diameter keeps the gear envelope small, making it ideal for space-constrained gearboxes in robotics, RC vehicles, and precision instruments.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e\n\u003cstrong\u003eMulti-Pack Quantity Options\u003c\/strong\u003e\n\u003cp\u003eAvailable in 1, 2, or 5-piece packs — stock spares for maintenance or build multiple identical drive stages without reordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🛡️\u003c\/span\u003e\n\u003cstrong\u003eWear-Resistant Brass Alloy\u003c\/strong\u003e\n\u003cp\u003eBrass outperforms plastic gears in continuous-duty cycles and resists galling against steel shafts, extending service intervals in demanding builds.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\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\u003e46\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePitch Diameter\u003c\/th\u003e\n\u003ctd\u003e23 mm (0.91 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eBrass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Diameter\u003c\/th\u003e\n\u003ctd\u003e4 \/ 5 \/ 6 \/ 8 \/ 10 \/ 12 mm — See variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGear Width (Face Width)\u003c\/th\u003e\n\u003ctd\u003eTypically 5–8 mm (0.20–0.31 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\u003eTooth Profile\u003c\/th\u003e\n\u003ctd\u003eStandard Involute\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eNatural brass (uncoated)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePacking Quantity\u003c\/th\u003e\n\u003ctd\u003e1 PCS \/ 2 PCS \/ 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\u003eTypically 8–18 g (0.28–0.63 oz) depending on bore\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\u003eWhich bore size should I choose?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eMeasure your shaft's outer diameter with calipers and select the matching bore. Available options are 4 mm, 5 mm, 6 mm, 8 mm, 10 mm, and 12 mm. A bore that matches your shaft exactly (with a light interference or keyed fit) will prevent slippage under load. If your shaft falls between sizes, consult your design tolerances or use a set-screw collar.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWill this gear mesh with my existing 0.5 mod gears?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes. This gear uses a standard 0.5 module involute tooth profile with a 20° pressure angle, which is compatible with any other 0.5 mod spur gear, rack, or pinion of the same module. Confirm the mating gear's module before ordering to ensure proper mesh.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eIs brass strong enough for my application?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eBrass is well-suited for light-to-medium duty transmission applications — RC vehicles, robotics joints, instrument drives, and prototype gearboxes. It offers better wear resistance than nylon or acetal and resists galling against steel shafts. For heavy industrial loads or shock-load environments, consider a steel gear instead.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eDoes brass corrode or require lubrication?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eBrass has inherent corrosion resistance and will not rust. It also has mild self-lubricating properties, though applying a light machine oil or grease to the tooth faces will extend service life and reduce noise, especially in continuous-duty applications.\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 or CNC machine?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes. A 0.5 mod 46-tooth brass spur gear is commonly used in extruder drives, axis transmission stages, and pen plotters where dimensional accuracy and wear resistance matter. Verify that your existing drive system uses 0.5 module gearing before substituting.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhy buy a multi-pack instead of a single piece?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eMulti-packs (2 PCS or 5 PCS) offer a lower per-unit cost and ensure you have spares on hand for maintenance or parallel builds. If you are building multiple identical drive stages — such as a multi-axis robot or a fleet of RC vehicles — ordering a 5-pack reduces downtime and reorder frequency.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the pitch diameter and how does it affect gear ratio?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThe pitch diameter of this gear is 23 mm (Module × Teeth = 0.5 × 46). Gear ratio is determined by dividing the driven gear's tooth count by the driving gear's tooth count. Pairing this 46T gear with a smaller pinion (e.g., 10T) yields a 4.6:1 reduction ratio, useful for torque multiplication in slow-speed actuators.\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\": \"Which bore size should I choose?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Measure your shaft's outer diameter with calipers and select the matching bore. Available options are 4 mm, 5 mm, 6 mm, 8 mm, 10 mm, and 12 mm. A bore that matches your shaft exactly will prevent slippage under load.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Will this gear mesh with my existing 0.5 mod gears?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. This gear uses a standard 0.5 module involute tooth profile with a 20° pressure angle, compatible with any 0.5 mod spur gear, rack, or pinion of the same module.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is brass strong enough for my application?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Brass is well-suited for light-to-medium duty transmission applications including RC vehicles, robotics joints, and prototype gearboxes. It offers better wear resistance than nylon or acetal and resists galling against steel shafts.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Does brass corrode or require lubrication?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Brass has inherent corrosion resistance and will not rust. Applying a light machine oil or grease to the tooth faces will extend service life and reduce noise in continuous-duty applications.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I use this gear in a 3D printer or CNC machine?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. A 0.5 mod 46-tooth brass spur gear is commonly used in extruder drives, axis transmission stages, and pen plotters. Verify your existing drive system uses 0.5 module gearing before substituting.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Why buy a multi-pack instead of a single piece?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Multi-packs offer a lower per-unit cost and ensure you have spares on hand for maintenance or parallel builds. A 5-pack reduces downtime and reorder frequency for multi-axis robots or fleet builds.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the pitch diameter and how does it affect gear ratio?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The pitch diameter is 23 mm (0.5 module × 46 teeth). Gear ratio equals driven teeth divided by driving teeth. Pairing this 46T gear with a 10T pinion yields a 4.6:1 reduction ratio.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"HomeDIYer","offers":[{"title":"0.5 Mod 46T 【Bore 4mm】 \/ 1 PCS","offer_id":52442811793682,"sku":"AdaahGFCD04463x1","price":11.45,"currency_code":"USD","in_stock":true},{"title":"0.5 Mod 46T 【Bore 5mm】 \/ 1 PCS","offer_id":52442811826450,"sku":"AdaahGFCD04464x1","price":11.45,"currency_code":"USD","in_stock":true},{"title":"0.5 Mod 46T 【Bore 6mm】 \/ 1 PCS","offer_id":52442811859218,"sku":"AdaahGFCD04465x1","price":11.45,"currency_code":"USD","in_stock":true},{"title":"0.5 Mod 46T 【Bore 8mm】 \/ 1 PCS","offer_id":52442811891986,"sku":"AdaahGFCD04466x1","price":11.45,"currency_code":"USD","in_stock":true},{"title":"0.5 Mod 46T 【Bore 10mm】 \/ 1 PCS","offer_id":52442811924754,"sku":"AdaahGFCD04467x1","price":11.45,"currency_code":"USD","in_stock":true},{"title":"0.5 Mod 46T 【Bore 12mm】 \/ 1 PCS","offer_id":52442811957522,"sku":"AdaahGFCD04468x1","price":11.45,"currency_code":"USD","in_stock":true},{"title":"0.5 Mod 46T 【Bore 4mm】 \/ 2 PCS","offer_id":52442811990290,"sku":"AdaahGFCD04463x2","price":17.78,"currency_code":"USD","in_stock":true},{"title":"0.5 Mod 46T 【Bore 5mm】 \/ 2 PCS","offer_id":52442812023058,"sku":"AdaahGFCD04464x2","price":17.78,"currency_code":"USD","in_stock":true},{"title":"0.5 Mod 46T 【Bore 6mm】 \/ 2 PCS","offer_id":52442812055826,"sku":"AdaahGFCD04465x2","price":17.72,"currency_code":"USD","in_stock":true},{"title":"0.5 Mod 46T 【Bore 8mm】 \/ 2 PCS","offer_id":52442812088594,"sku":"AdaahGFCD04466x2","price":17.58,"currency_code":"USD","in_stock":true},{"title":"0.5 Mod 46T 【Bore 10mm】 \/ 2 PCS","offer_id":52442812121362,"sku":"AdaahGFCD04467x2","price":17.34,"currency_code":"USD","in_stock":true},{"title":"0.5 Mod 46T 【Bore 12mm】 \/ 2 PCS","offer_id":52442812154130,"sku":"AdaahGFCD04468x2","price":17.19,"currency_code":"USD","in_stock":true},{"title":"0.5 Mod 46T 【Bore 4mm】 \/ 5 PCS","offer_id":52442812186898,"sku":"AdaahGFCD04463x5","price":39.43,"currency_code":"USD","in_stock":true},{"title":"0.5 Mod 46T 【Bore 5mm】 \/ 5 PCS","offer_id":52442812219666,"sku":"AdaahGFCD04464x5","price":39.37,"currency_code":"USD","in_stock":true},{"title":"0.5 Mod 46T 【Bore 6mm】 \/ 5 PCS","offer_id":52442812252434,"sku":"AdaahGFCD04465x5","price":39.24,"currency_code":"USD","in_stock":true},{"title":"0.5 Mod 46T 【Bore 8mm】 \/ 5 PCS","offer_id":52442812285202,"sku":"AdaahGFCD04466x5","price":38.88,"currency_code":"USD","in_stock":true},{"title":"0.5 Mod 46T 【Bore 10mm】 \/ 5 PCS","offer_id":52442812317970,"sku":"AdaahGFCD04467x5","price":38.47,"currency_code":"USD","in_stock":true},{"title":"0.5 Mod 46T 【Bore 12mm】 \/ 5 PCS","offer_id":52442812350738,"sku":"AdaahGFCD04468x5","price":38.01,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture2of13_d77da6bb-bbd4-467f-8454-29cc0849a018.jpg?v=1783606761","url":"https:\/\/homediyer.com\/products\/0-5-mod-brass-pinion-spur-gear-46-teeth-bore-4-5-6-8-10-12mm","provider":"HomeDIYer","version":"1.0","type":"link"}