{"product_id":"0-8-mod-worm-gear-set-brass-stainless-20t-60t","title":"0.8 Module 20T to 60T Gear Copper Worm Wheel Gear \u0026 Worm Gear Shaft Bore 5-12mm","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003e0.8 Module Worm Gear Set — Precise Copper Wheel \u0026amp; Stainless Rod for Robotics and CNC Builds\u003c\/h2\u003e\n\u003cp\u003eWhen your motion-control project demands a compact, high-ratio drive that won't slip under load, a mismatched or undersized worm gear set becomes the weakest link in your build. Whether you're a robotics engineer, CNC hobbyist, or automation maker, this 0.8 module worm gear set gives you the dimensional accuracy and material choice needed to keep your drivetrain running smoothly.\u003c\/p\u003e\n\u003cp\u003eEach set pairs a worm wheel (gear) machined from solid brass with a worm rod (shaft) in stainless steel or brass, depending on your variant selection. Wheel tooth counts range from 20T to 60T, bore diameters span 5 mm to 12 mm (approx. 0.20\" to 0.47\"), and rod types include A-type, B-type, and L-type configurations. Module is 0.8 throughout, ensuring consistent mesh across the full range.\u003c\/p\u003e\n\u003cp\u003eTypical use cases include low-speed, high-torque actuators for robotic arms and pan-tilt camera rigs, feed-rate reduction stages in DIY CNC routers and laser engravers, and self-locking drive mechanisms in automated door locks and conveyor indexers where back-driving must be prevented.\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 0.8 module worm gear systems. Worm rod and worm wheel must share the same module (0.8) and matching lead angle for correct mesh. Verify bore diameter against your shaft OD before ordering.\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These 0.8 Module Worm Gear Sets\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\n\u003cp\u003eChoose brass worm wheels for excellent machinability and corrosion resistance in light-duty applications, or stainless steel worm rods for added strength in demanding environments.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\n\u003cstrong\u003eWide Tooth Count Range\u003c\/strong\u003e\n\u003cp\u003eWorm wheels available in 20T, 25T, 30T, 35T, 40T, 50T, and 60T — giving you gear ratios from 20:1 up to 60:1 with a single-start worm rod.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🎯\u003c\/span\u003e\n\u003cstrong\u003eMultiple Bore Sizes\u003c\/strong\u003e\n\u003cp\u003eBore options of 5 mm, 6 mm, 8 mm, 10 mm, and 12 mm (plus holeless for custom machining) let you match directly to standard motor and shaft diameters without adapters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e\n\u003cstrong\u003eThree Worm Rod Types\u003c\/strong\u003e\n\u003cp\u003eA-type, B-type, and L-type worm rods accommodate different shaft-end configurations and mounting constraints in your gearbox or chassis design.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🛡️\u003c\/span\u003e\n\u003cstrong\u003eSelf-Locking Drive\u003c\/strong\u003e\n\u003cp\u003eThe 0.8 module worm gear geometry provides inherent self-locking behavior at typical lead angles, preventing back-driving in vertical lifts, rotary tables, and positioning stages.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e\n\u003cstrong\u003eSold Individually or as a Set\u003c\/strong\u003e\n\u003cp\u003eOrder worm rods and worm wheels separately to replace worn components, or select matching rod + wheel variants to build a complete 0.8 mod worm drive from scratch.\u003c\/p\u003e\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 — 0.8 Module Worm Gear\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eModule\u003c\/th\u003e\n\u003ctd\u003e0.8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWorm Wheel Material\u003c\/th\u003e\n\u003ctd\u003eBrass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWorm Rod Material\u003c\/th\u003e\n\u003ctd\u003eStainless Steel (rod variants) \/ Brass (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTooth Count (Wheel)\u003c\/th\u003e\n\u003ctd\u003e20T, 25T, 30T, 35T, 40T, 50T, 60T\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Diameter\u003c\/th\u003e\n\u003ctd\u003e5 mm \/ 6 mm \/ 8 mm \/ 10 mm \/ 12 mm \/ Holeless\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWorm Rod Type\u003c\/th\u003e\n\u003ctd\u003eA-Type, B-Type, L-Type\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePressure Angle\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLead Angle\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOuter Diameter (Wheel)\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHub Width\u003c\/th\u003e\n\u003ctd\u003eSee variant options\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\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eNatural machined\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\u003cdetails\u003e\n\u003csummary\u003eHow do I choose the right tooth count for my application?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThe tooth count of the worm wheel equals the gear ratio when paired with a single-start worm rod. A 20T wheel gives a 20:1 reduction, a 60T wheel gives 60:1. Choose a higher tooth count for more torque and slower output speed; choose a lower count for faster output with less torque multiplication. For most robotics and CNC feed-axis applications, 30T–40T is a practical starting point.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat bore size should I order?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eMeasure the outer diameter (OD) of your motor shaft or drive shaft with calipers. Select the bore that matches your shaft OD exactly — a 6 mm bore fits a 6 mm shaft. If your shaft is metric and falls between listed sizes, choose the next size up and use a set screw or keyway to secure it. The \"Holeless\" option is for users who need to machine a custom bore diameter.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between A-type, B-type, and L-type worm rods?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eA-type, B-type, and L-type refer to the shaft-end configuration of the worm rod. B-type typically features a plain cylindrical shaft on both ends; A-type may include a stepped or shouldered end for easier bearing location; L-type is an extended-length variant suited for applications requiring a longer shaft span. Check your gearbox drawing or chassis clearance to determine which end style fits your mounting arrangement.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre these worm gears self-locking?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes, in most configurations. A 0.8 module worm gear set with a single-start worm rod and typical lead angle will be self-locking, meaning the output (wheel) cannot back-drive the input (rod) when no motor torque is applied. This makes them well-suited for vertical lifts, rotary positioning tables, and any mechanism where holding position without power is required. Self-locking behavior depends on the specific lead angle and friction conditions — confirm with your application's load requirements.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use a brass wheel with a stainless steel worm rod together?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes, and this is actually a recommended pairing. Brass and stainless steel have different hardness levels, which reduces galling and wear at the mesh contact point. The softer brass wheel acts as the sacrificial wear component, which is easier and less expensive to replace than the rod. This dissimilar-metal pairing is standard practice in worm drive design for light-to-medium duty applications.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat applications are these 0.8 module worm gears suitable for?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThese gears are well-suited for robotics joints and arm actuators, DIY CNC router Z-axis and feed drives, pan-tilt camera platforms, automated door and gate mechanisms, conveyor indexing systems, and small-scale automation projects where a compact, self-locking reduction drive is needed. They are not recommended for high-speed continuous-duty industrial applications without proper lubrication and housing.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDo I need lubrication for these worm gears?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eLubrication is strongly recommended for any worm gear drive under load. Apply a light grease (such as lithium-based or NLGI #2 gear grease) to the mesh contact area during assembly. For intermittent-duty or low-load applications (e.g., hobby robotics), a thin film of grease applied at installation is typically sufficient. For continuous-duty or higher-load use, re-lubricate periodically based on operating hours and temperature.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-cta\"\u003e\n🛒 Select your Type, Bore, and Material \u0026amp; Amount above, then add to cart.\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"HomeDIYer","offers":[{"title":"0.8 Mod - B Type Worm Rod \/ 5mm \/ Stainless Steels \u0026 1 PCS","offer_id":52443574403346,"sku":"GYJLTJGJXCD4346x1","price":13.57,"currency_code":"USD","in_stock":true},{"title":"0.8 Mod - B Type Worm Rod \/ 6mm \/ Stainless Steels \u0026 1 PCS","offer_id":52443574436114,"sku":"GYJLTJGJXCD4347x1","price":15.91,"currency_code":"USD","in_stock":true},{"title":"0.8 Mod - B Type Worm Rod \/ 8mm \/ Stainless Steels \u0026 1 PCS","offer_id":52443574468882,"sku":"GYJLTJGJXCD4348x1","price":15.91,"currency_code":"USD","in_stock":true},{"title":"0.8 Mod - A Type Worm Rod \/ 5mm \/ Stainless Steels \u0026 1 PCS","offer_id":52443574501650,"sku":"GYJLTJGJXCD4349x1","price":15.91,"currency_code":"USD","in_stock":true},{"title":"0.8 Mod - 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