{"product_id":"mod-1-5-worm-gear-wheel-brass-40-tooth-worm-shaft-45-steel-precision-o-8-20-mm","title":"Mod 1.5 Worm Gear Wheel Brass 40 Tooth Worm Shaft 45# Steel Precision Ø 8-20 mm","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eMod 1.5 Worm Gear \u0026amp; Worm Shaft — Precision Drive Components for Robotics and Automation\u003c\/h2\u003e\n\u003cp\u003eWhen your motion control build demands reliable torque transfer and smooth speed reduction, mismatched or undersized gearing becomes the bottleneck. Engineers, robotics builders, and small-batch manufacturers working on conveyor systems, rotary actuators, and automated fixtures need worm drive components that hold tight tolerances across every cycle. This matched set of Mod 1.5 worm gear wheels and worm shafts is designed for exactly that workload.\u003c\/p\u003e\n\u003cp\u003eThe worm gear wheel is machined from brass with 40 teeth and a Module 1.5 tooth profile. The worm shafts are available in three configurations — A Type, B Type, and C Type — each turned from 45# carbon steel. Bore diameters range from 8 mm to 20 mm (approximately 0.31 in to 0.79 in), with plain bore and keyway options (3×1.4 mm, 4×1.8 mm, and 5×2.3 mm, 6×2.8 mm) to suit standard shaft fits.\u003c\/p\u003e\n\u003cp\u003eTypical applications include low-speed high-torque rotary stages for CNC indexing tables, worm-drive actuators for robotic arm joints, and speed-reduction assemblies in automated packaging or conveyor equipment. The Mod 1.5 standard ensures interchangeability with other metric worm drive components in the same module class.\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 Mod 1.5 (Module 1.5) worm drive systems. Worm gear wheel pairs with any Mod 1.5 single-start worm shaft. Verify bore diameter and keyway dimensions against your shaft before ordering.\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These Mod 1.5 Worm Gear \u0026amp; Worm Shaft Components\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-list\"\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🟡\u003c\/span\u003e\n\u003cstrong\u003eBrass Worm Gear Wheel\u003c\/strong\u003e\n\u003cp\u003e40-tooth brass gear wheel with Mod 1.5 tooth profile. Brass construction provides low friction meshing against steel worm shafts and resists corrosion in lightly lubricated environments.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\n\u003cstrong\u003e45# Carbon Steel Worm Shafts\u003c\/strong\u003e\n\u003cp\u003eA Type, B Type, and C Type shaft configurations machined from 45# carbon steel for strength and wear resistance. Each type offers a different shaft length and shoulder geometry to suit varied mounting arrangements.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\n\u003cstrong\u003eWide Bore Range with Keyway Options\u003c\/strong\u003e\n\u003cp\u003eBore diameters from 8 mm to 20 mm (0.31–0.79 in). Plain bore and keyway variants (3×1.4 mm up to 6×2.8 mm) available for positive torque transmission without set-screw slip.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e\n\u003cstrong\u003eMod 1.5 Standard Tooth Profile\u003c\/strong\u003e\n\u003cp\u003eMetric Module 1.5 tooth geometry ensures dimensional interchangeability with other Mod 1.5 worm drive components. Consistent pitch and pressure angle for smooth, low-backlash engagement.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🏭\u003c\/span\u003e\n\u003cstrong\u003eSuited for Robotics and Automation Builds\u003c\/strong\u003e\n\u003cp\u003eMatched gear-and-shaft sets are well-suited for CNC rotary tables, robotic joint actuators, conveyor speed reducers, and small-batch automated machinery requiring compact worm drive assemblies.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e\n\u003cstrong\u003eFlexible Quantity Options\u003c\/strong\u003e\n\u003cp\u003eAvailable in 1 PCS or 2 PCS quantities per order. Mix gear wheel and worm shaft types to build complete drive assemblies or stock spares for ongoing production runs.\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 — Mod 1.5 Worm Gear \u0026amp; Worm Shaft\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eModule\u003c\/th\u003e\n\u003ctd\u003e1.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGear Wheel Teeth\u003c\/th\u003e\n\u003ctd\u003e40 Teeth\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGear Wheel Material\u003c\/th\u003e\n\u003ctd\u003eBrass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWorm Shaft Material\u003c\/th\u003e\n\u003ctd\u003e45# Carbon Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWorm Shaft Types\u003c\/th\u003e\n\u003ctd\u003eA Type, B Type, C Type\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Diameter Range\u003c\/th\u003e\n\u003ctd\u003e8 mm – 20 mm (0.31 in – 0.79 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eKeyway Options\u003c\/th\u003e\n\u003ctd\u003e3×1.4 mm \/ 4×1.8 mm \/ 5×2.3 mm \/ 6×2.8 mm (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Type\u003c\/th\u003e\n\u003ctd\u003ePlain bore or keyed bore (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTooth Profile Standard\u003c\/th\u003e\n\u003ctd\u003eMetric Module (Mod 1.5)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eQuantity per Order\u003c\/th\u003e\n\u003ctd\u003e1 PCS or 2 PCS (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGear Wheel OD (approx.)\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShaft Length\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\u003cdetails\u003e\n\u003csummary\u003eHow do I choose between A Type, B Type, and C Type worm shafts?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThe three shaft types differ in overall length and shoulder\/step geometry. A Type is the shortest configuration, suited for compact housings. B Type offers a longer shaft with a stepped shoulder for bearing support on one end. C Type provides the longest shaft with shoulders on both ends for dual-bearing mounting. Select based on your housing design and bearing arrangement.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWill the Mod 1.5 worm gear wheel mesh with any Mod 1.5 worm shaft?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes. The Mod 1.5 tooth profile is a metric standard, so this gear wheel will mesh correctly with any single-start Mod 1.5 worm shaft of matching helix angle. The worm shafts listed in this product are designed to pair with this gear wheel. If using a third-party shaft, confirm the module, lead angle, and thread direction (right-hand) match.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDo I need a keyway, or is a plain bore sufficient?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eFor applications with moderate to high torque or reversing loads, a keyed bore is strongly recommended to prevent rotational slip between the shaft and gear. Plain bore variants are suitable for light-duty or low-torque applications where a set screw or interference fit is used. Check your torque requirements and shaft fit tolerance before selecting.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs brass a suitable material for the worm gear wheel in my application?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eBrass is the standard material for worm gear wheels paired with steel worm shafts. It provides a favorable friction pairing — the softer brass wears preferentially, protecting the harder steel shaft. Brass also offers good corrosion resistance in lightly lubricated or dry environments. It is well-suited for low-to-medium speed, moderate-torque applications typical of robotics and automation.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat bore diameter should I select for my shaft?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eSelect the bore diameter that matches your motor or gearbox output shaft diameter. Available bores range from 8 mm to 20 mm. If your shaft has a keyway, choose the matching keyed bore variant (e.g., 12 mm\/4×1.8 mm keyway for a 12 mm shaft with a 4 mm wide, 1.8 mm deep keyway). Measure your shaft diameter precisely before ordering — bore-to-shaft clearance is typically H7\/h6 for a standard sliding fit.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use this worm gear set for a self-locking drive?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eWorm drives with a low lead angle (typically below 5°) are self-locking, meaning the load cannot back-drive the worm shaft. Mod 1.5 single-start worm gears generally exhibit self-locking behavior, making them suitable for applications like lifting mechanisms or positioning stages where holding position without power is required. Confirm the specific lead angle of your shaft configuration if self-locking is a critical requirement.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDo I need to order the gear wheel and worm shaft separately?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes. The worm gear wheel (40 Teeth, Brass) and the worm shafts (A\/B\/C Type, 45# Steel) are listed as separate variant options within this product. Select your gear wheel variant and your worm shaft variant independently, or use the 2 PCS quantity option to stock multiples of the same component. A complete worm drive assembly requires one gear wheel and one matching worm shaft.\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\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 A Type, B Type, and C Type worm shafts?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The three shaft types differ in overall length and shoulder\/step geometry. A Type is the shortest configuration, suited for compact housings. B Type offers a longer shaft with a stepped shoulder for bearing support on one end. C Type provides the longest shaft with shoulders on both ends for dual-bearing mounting.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Will the Mod 1.5 worm gear wheel mesh with any Mod 1.5 worm shaft?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. The Mod 1.5 tooth profile is a metric standard, so this gear wheel will mesh correctly with any single-start Mod 1.5 worm shaft of matching helix angle.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Do I need a keyway, or is a plain bore sufficient?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"For applications with moderate to high torque or reversing loads, a keyed bore is strongly recommended to prevent rotational slip. Plain bore variants are suitable for light-duty or low-torque applications.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is brass a suitable material for the worm gear wheel in my application?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Brass is the standard material for worm gear wheels paired with steel worm shafts. It provides a favorable friction pairing and good corrosion resistance, well-suited for low-to-medium speed, moderate-torque applications.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What bore diameter should I select for my shaft?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Select the bore diameter that matches your motor or gearbox output shaft diameter. Available bores range from 8 mm to 20 mm. If your shaft has a keyway, choose the matching keyed bore variant.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I use this worm gear set for a self-locking drive?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Mod 1.5 single-start worm gears generally exhibit self-locking behavior, making them suitable for lifting mechanisms or positioning stages where holding position without power is required.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Do I need to order the gear wheel and worm shaft separately?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. The worm gear wheel and worm shafts are listed as separate variant options. Select your gear wheel variant and worm shaft variant independently. A complete worm drive assembly requires one gear wheel and one matching worm shaft.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"HomeDIYer","offers":[{"title":"1.5 Mod - 40 Teeth Worm Gear \/ 10 mm \/ Brass \u0026 1 PCS","offer_id":52443678146834,"sku":"GYJLTGFCD06170x1","price":137.43,"currency_code":"USD","in_stock":true},{"title":"1.5 Mod - 40 Teeth Worm Gear \/ 12 mm\/4 x 1.8 mm keyway \/ Brass \u0026 1 PCS","offer_id":52443678179602,"sku":"GYJLTGFCD06171x1","price":135.58,"currency_code":"USD","in_stock":true},{"title":"1.5 Mod - 40 Teeth Worm Gear \/ 14 mm\/5 x 2.3 mm keyway \/ Brass \u0026 1 PCS","offer_id":52443678212370,"sku":"GYJLTGFCD06172x1","price":133.35,"currency_code":"USD","in_stock":true},{"title":"1.5 Mod - 40 Teeth Worm Gear \/ 15 mm\/5 x 2.3 mm keyway \/ Brass \u0026 1 PCS","offer_id":52443678245138,"sku":"GYJLTGFCD06173x1","price":132.26,"currency_code":"USD","in_stock":true},{"title":"1.5 Mod - 40 Teeth Worm Gear \/ 16 mm\/5 x 2.3 mm keyway \/ Brass \u0026 1 PCS","offer_id":52443678277906,"sku":"GYJLTGFCD06174x1","price":131.09,"currency_code":"USD","in_stock":true},{"title":"1.5 Mod - 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