{"product_id":"brass-worm-wheel-gear-module-transmission-worm-rod-shaft","title":"Brass Worm Wheel Gear 0.5\/0.8\/1\/1.5 Module Transmission Gear Worm Rod Gear Shaft","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eBrass Worm Wheel Gear \u0026amp; Worm Rod — Precision 0.5–1.5 Module Transmission Components\u003c\/h2\u003e\n\u003cp\u003eWhen your motion-control build demands a compact right-angle drive with reliable speed reduction, finding matched worm gear sets in the right module and bore can be a real bottleneck — especially for robotics builders, automation hobbyists, and small-machine designers who need interchangeable parts without custom machining. This listing covers a complete family of worm wheel gears and worm rods engineered to work together straight out of the box.\u003c\/p\u003e\n\u003cp\u003eThe set spans three material grades — brass, stainless steel, and 45# carbon steel — across four module sizes (0.5M, 0.8M, 1M, and 1.5M). Worm gears are available in tooth counts from 20T to 60T with bore diameters ranging from 4 mm (approx. 0.157 in) to 12 mm (approx. 0.472 in), including a 12 mm + 4 mm keyway option for keyed-shaft applications. Worm rods come in A-Type and B-Type (and C-Type for 1.5M) configurations to suit different housing geometries. Overall gear outer diameters typically range from approximately 18 mm to 65 mm (0.71–2.56 in) depending on module and tooth count.\u003c\/p\u003e\n\u003cp\u003eTypical use cases include DIY CNC axis drives requiring a worm gear speed reducer for stepper motors, compact robotic joint actuators using a brass worm wheel gear set for low-backlash positioning, and small conveyor or indexing table builds where a stainless steel worm rod and gear shaft provide corrosion resistance in light-wash environments.\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 Note:\u003c\/strong\u003e Worm gears and worm rods within the same module (e.g., 0.5M gear + 0.5M rod) are designed to mesh together. Always match module numbers. Bore diameter must match your shaft OD; use the keyway variant for keyed shafts. Check center distance requirements against your housing design before ordering.\n\u003c\/div\u003e\n\n\u003ch2\u003e✅ Key Features of These Worm Wheel Gears \u0026amp; Worm Rods\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\n\u003cdiv\u003e\n\u003cdiv class=\"hdiy-icon\"\u003e🔩\u003c\/div\u003e\n\u003cstrong\u003eThree Material Options\u003c\/strong\u003e\n\u003cp\u003eChoose brass for low-noise, self-lubricating drives; stainless steel for corrosion-resistant environments; or 45# carbon steel for higher-load, cost-effective applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\u003cdiv class=\"hdiy-icon\"\u003e📐\u003c\/div\u003e\n\u003cstrong\u003eFour Module Sizes: 0.5M \/ 0.8M \/ 1M \/ 1.5M\u003c\/strong\u003e\n\u003cp\u003eCovers a wide range of speed-reduction ratios and torque requirements. Larger modules handle greater loads; smaller modules suit compact, fine-pitch drives.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\u003cdiv class=\"hdiy-icon\"\u003e⚙️\u003c\/div\u003e\n\u003cstrong\u003eTooth Counts 20T–60T\u003c\/strong\u003e\n\u003cp\u003eSelect the tooth count that matches your target reduction ratio when paired with a single-start worm rod (e.g., 40T gear = 40:1 ratio with a 1-start worm).\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\u003cdiv class=\"hdiy-icon\"\u003e🔧\u003c\/div\u003e\n\u003cstrong\u003eBore Diameters 4–12 mm, Including Keyway\u003c\/strong\u003e\n\u003cp\u003eSeven bore options — 4, 5, 6, 8, 10, 12 mm, and 12 mm + 4 mm keyway — accommodate a broad range of motor and shaft sizes without additional boring.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\u003cdiv class=\"hdiy-icon\"\u003e🔗\u003c\/div\u003e\n\u003cstrong\u003eMatched Worm Rod Types (A \/ B \/ C)\u003c\/strong\u003e\n\u003cp\u003eA-Type and B-Type rods differ in shaft-end geometry; C-Type is available for 1.5M. Select the type that fits your housing or coupling arrangement.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\u003cdiv class=\"hdiy-icon\"\u003e🏭\u003c\/div\u003e\n\u003cstrong\u003eBroad Application Compatibility\u003c\/strong\u003e\n\u003cp\u003eSuited for DIY CNC machines, robotic joints, conveyor indexers, camera pan-tilt rigs, and other compact right-angle drive systems requiring a worm gear speed reducer.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003ch2\u003e📐 Technical Specifications — Worm Wheel Gear \u0026amp; Worm Rod\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct Type\u003c\/th\u003e\n\u003ctd\u003eWorm Wheel Gear \/ Worm Rod (Gear Shaft)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eModule Options\u003c\/th\u003e\n\u003ctd\u003e0.5M, 0.8M, 1M, 1.5M\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial Options\u003c\/th\u003e\n\u003ctd\u003eBrass, Stainless Steel, 45# Carbon Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGear Tooth Count\u003c\/th\u003e\n\u003ctd\u003e20T, 25T, 30T, 35T, 40T, 50T, 60T (gear variants)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWorm Rod Types\u003c\/th\u003e\n\u003ctd\u003eA-Type, B-Type, C-Type (1.5M only)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Diameter\u003c\/th\u003e\n\u003ctd\u003e4 mm \/ 5 mm \/ 6 mm \/ 8 mm \/ 10 mm \/ 12 mm \/ 12 mm + keyway 4 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGear Outer Diameter (approx.)\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWorm Rod Length (approx.)\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTooth Profile\u003c\/th\u003e\n\u003ctd\u003eStandard involute worm gear profile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePressure Angle\u003c\/th\u003e\n\u003ctd\u003e20° (standard)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHelix Direction\u003c\/th\u003e\n\u003ctd\u003eRight-hand (standard)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSurface Finish — Brass\u003c\/th\u003e\n\u003ctd\u003eNatural machined brass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSurface Finish — Stainless Steel\u003c\/th\u003e\n\u003ctd\u003eNatural machined stainless\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSurface Finish — 45# Steel\u003c\/th\u003e\n\u003ctd\u003eNatural machined carbon steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eQuantity per Order\u003c\/th\u003e\n\u003ctd\u003e1 piece\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 module size for my project?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eModule size determines the tooth size and load capacity. Smaller modules (0.5M, 0.8M) are suited for light-duty, compact drives — such as camera rigs or small robotic joints — where space is limited. Larger modules (1M, 1.5M) handle greater torque and are better for CNC axis drives or conveyor indexers. Match the module of the worm gear to the module of the worm rod for proper meshing.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat reduction ratio will I get with a specific tooth count?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eFor a single-start worm rod, the reduction ratio equals the number of teeth on the worm gear. For example, a 40T worm gear paired with a 1-start worm rod gives a 40:1 ratio. If you use a 2-start worm rod, the ratio is halved (e.g., 40T ÷ 2 = 20:1). All worm rods in this listing are single-start unless otherwise specified in the variant name.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhich material should I choose — brass, stainless steel, or 45# steel?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eBrass worm gears are self-lubricating, run quietly, and are ideal for light-to-medium loads where noise reduction matters (e.g., camera pan-tilt, small automation). Stainless steel suits environments with moisture or mild chemical exposure where corrosion resistance is needed. 45# carbon steel offers higher strength and is cost-effective for dry, higher-load applications. A common pairing is a brass worm gear with a steel worm rod to reduce wear on the softer gear.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eHow do I select the correct bore diameter?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eMeasure your motor or drive shaft outer diameter (OD) precisely with calipers. Select the bore that matches your shaft OD. If your shaft has a keyway, choose the \"12mm + keyway 4mm\" variant for a keyed connection. For shafts between listed bore sizes, you may need to bore out the gear — consult a machinist. Do not force a gear onto an oversized shaft.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between A-Type and B-Type worm rods?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eA-Type and B-Type worm rods differ in their shaft-end geometry — specifically the length and style of the non-threaded shaft extensions on each end. B-Type rods typically have a longer usable shaft section, while A-Type may have a shorter or differently proportioned end. C-Type (available in 1.5M) has a further variation in end geometry. Choose the type that fits your housing bore spacing and coupling requirements. If unsure, contact us with your housing drawing for confirmation.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eAre these worm gears self-locking?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eWorm gear sets with a low lead angle (typically modules 0.5M–1M with single-start worms) tend to be self-locking or near-self-locking, meaning the load cannot back-drive the worm rod. This is useful for positioning applications where you want the load to hold position when the motor is off. However, self-locking behavior depends on friction conditions, lubrication, and load magnitude — do not rely on self-locking as a safety brake in critical applications.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eDo I need to lubricate these gears?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes, lubrication extends service life significantly. Brass-on-steel worm gear pairs benefit from a light gear grease or worm gear oil applied to the mesh contact area before first use. Stainless steel pairs also benefit from lubrication. Re-lubricate periodically based on duty cycle and operating speed. Avoid dry running, especially at higher speeds, as it accelerates wear on the worm gear teeth.\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 Material, Type, and Bore Diameter 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 module size for my project?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Module size determines the tooth size and load capacity. Smaller modules (0.5M, 0.8M) are suited for light-duty, compact drives. Larger modules (1M, 1.5M) handle greater torque. Match the module of the worm gear to the module of the worm rod for proper meshing.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What reduction ratio will I get with a specific tooth count?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"For a single-start worm rod, the reduction ratio equals the number of teeth on the worm gear. A 40T gear with a 1-start worm gives 40:1. A 2-start worm halves the ratio.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Which material should I choose — brass, stainless steel, or 45# steel?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Brass is self-lubricating and quiet, ideal for light-to-medium loads. Stainless steel suits moist or mildly corrosive environments. 45# carbon steel offers higher strength for dry, higher-load applications.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I select the correct bore diameter?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Measure your shaft OD with calipers and select the matching bore. For keyed shafts, choose the 12mm + keyway 4mm variant. Do not force a gear onto an oversized shaft.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the difference between A-Type and B-Type worm rods?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"A-Type and B-Type worm rods differ in shaft-end geometry and length. C-Type is available for 1.5M. Choose the type that fits your housing bore spacing and coupling requirements.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Are these worm gears self-locking?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Low lead angle worm sets (0.5M–1M, single-start) tend to be self-locking. However, do not rely on self-locking as a safety brake in critical applications — it depends on friction, lubrication, and load.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Do I need to lubricate these gears?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. Apply light gear grease or worm gear oil to the mesh contact area before first use. Re-lubricate periodically. Avoid dry running, especially at higher speeds.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"HomeDIYer","offers":[{"title":"45# Steel \/ B-Type\/1M Worm Rod \/ 5mm","offer_id":52443541274898,"sku":"GLFBBYWJGJXCD2997x1","price":7.89,"currency_code":"USD","in_stock":true},{"title":"45# Steel \/ B-Type\/1M Worm Rod \/ 10mm","offer_id":52443541307666,"sku":"GLFBBYWJGJXCD2998x1","price":7.19,"currency_code":"USD","in_stock":true},{"title":"Stainless Steels \/ B-Type\/1M Worm Rod \/ 6mm","offer_id":52443541340434,"sku":"GLFBBYWJGJXCD3000x1","price":9.49,"currency_code":"USD","in_stock":true},{"title":"Stainless Steels \/ B-Type\/1M Worm Rod \/ 8mm","offer_id":52443541373202,"sku":"GLFBBYWJGJXCD3001x1","price":9.49,"currency_code":"USD","in_stock":true},{"title":"Stainless Steels \/ B-Type\/1M Worm Rod \/ 10mm","offer_id":52443541405970,"sku":"GLFBBYWJGJXCD3002x1","price":9.49,"currency_code":"USD","in_stock":true},{"title":"Stainless Steels \/ A-Type\/1M Worm Rod \/ 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