{"product_id":"bevel-gear-module-1-brass-15-20-30-40-tooth-90-1-2-pairing-miter-gear-precision","title":"Bevel Gear Module 1 Brass 15\/20\/30\/40 Tooth 90° 1:2 Pairing Miter Gear Precision","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eModule 1 Brass Bevel Miter Gears — Precision 90° Power Transmission for DIY \u0026amp; Mechanical Builds\u003c\/h2\u003e\n\u003cp\u003eWhen your drive system needs to change direction without losing torque, a mismatched or imprecise bevel gear becomes the weakest link in your build. Engineers, robotics hobbyists, and mechanical DIYers working on right-angle drive assemblies need module 1 brass bevel miter gears that mesh cleanly, hold tight tolerances, and resist wear over extended duty cycles.\u003c\/p\u003e\n\u003cp\u003eThese Module 1 brass bevel gears are available in 15, 20, 30, and 40 tooth counts, machined from solid brass for a balance of machinability and corrosion resistance. Bore sizes range from 4 mm (0.16 in) to 15 mm (0.59 in), with keyway options available on larger bores. Each gear is designed as a 90° 1:2 pairing miter set, meaning a 15T gear pairs with a 30T gear, and a 20T gear pairs with a 40T gear for a 2:1 reduction ratio.\u003c\/p\u003e\n\u003cp\u003eTypical use cases include right-angle gearbox assemblies for CNC router axis drives, custom robotic arm joints requiring a 2:1 speed reduction, and small-scale mechanical automation projects such as conveyor direction changes and rotary indexing tables.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003e⚙️\u003c\/span\u003e \u003cstrong\u003eCompatibility:\u003c\/strong\u003e Module 1 tooth profile — pairs with any Module 1 bevel gear of matching pitch angle. 15T ↔ 30T and 20T ↔ 40T for 90° 1:2 ratio drives.\u003c\/div\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These Module 1 Brass Bevel Miter Gears\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-list\"\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e \u003cstrong\u003eSolid Brass Construction\u003c\/strong\u003e\n\u003cp\u003eMachined from brass for reliable corrosion resistance, smooth meshing, and low-noise operation in both dry and lightly lubricated environments.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e \u003cstrong\u003eModule 1 Precision Tooth Profile\u003c\/strong\u003e\n\u003cp\u003eStandard Module 1 pitch ensures accurate gear meshing with minimal backlash, compatible with any Module 1 bevel gear counterpart.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e \u003cstrong\u003eTrue 90° Miter Angle\u003c\/strong\u003e\n\u003cp\u003eEngineered for exact 90-degree right-angle power transmission — ideal for changing drive direction in compact mechanical assemblies.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚖️\u003c\/span\u003e \u003cstrong\u003e1:2 Ratio Pairing System\u003c\/strong\u003e\n\u003cp\u003e15T pairs with 30T; 20T pairs with 40T — delivering a clean 2:1 speed reduction or 1:2 speed increase depending on drive configuration.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🕳️\u003c\/span\u003e \u003cstrong\u003eWide Bore Size Range with Keyway Options\u003c\/strong\u003e\n\u003cp\u003eBore sizes from 4 mm to 15 mm (0.16–0.59 in), with keyway variants (4 mm and 5 mm) available on 12 mm, 14 mm, and 15 mm bores for positive shaft locking.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🛠️\u003c\/span\u003e \u003cstrong\u003eVersatile for Robotics, CNC \u0026amp; DIY Drives\u003c\/strong\u003e\n\u003cp\u003eSuited for robotics joints, CNC axis drives, conveyor direction changes, rotary indexing tables, and custom mechanical automation projects.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ch2\u003e📐 Technical Specifications — Module 1 Brass Bevel Miter Gears\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\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\u003eModule\u003c\/th\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTooth Count Options\u003c\/th\u003e\n\u003ctd\u003e15T, 20T, 30T, 40T\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePairing Ratio\u003c\/th\u003e\n\u003ctd\u003e1:2 (15T↔30T, 20T↔40T)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShaft Angle\u003c\/th\u003e\n\u003ctd\u003e90°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Size Options\u003c\/th\u003e\n\u003ctd\u003e4 mm, 5 mm, 6 mm, 8 mm, 10 mm, 12 mm, 12 mm + 4 mm Keyway, 14 mm + 5 mm Keyway, 15 mm + 5 mm Keyway\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePressure Angle\u003c\/th\u003e\n\u003ctd\u003e20° (standard Module 1)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOuter Diameter\u003c\/th\u003e\n\u003ctd\u003eSee variant options\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\u003eWeight\u003c\/th\u003e\n\u003ctd\u003eSee variant options\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\u003eQuantity\u003c\/th\u003e\n\u003ctd\u003e1 pc per order (pair sold separately)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-faq\"\u003e\n\u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I select the correct pairing for a 90° 1:2 drive?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eFor a 2:1 speed reduction, pair the 15-tooth gear (driver) with the 30-tooth gear (driven), or pair the 20-tooth gear with the 40-tooth gear. Both combinations produce a 90° shaft angle with a 1:2 ratio. If you need a 1:1 ratio, you would need two gears of the same tooth count — contact us to confirm availability.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre these gears sold as a pair or individually?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eEach listing sells 1 piece per order. To complete a mating pair (e.g., 15T + 30T), you need to add both tooth counts to your cart separately. Select the correct tooth count and bore size for each gear in your drive assembly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat bore size should I choose?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eMatch the bore size to your shaft diameter. Available bores are 4 mm, 5 mm, 6 mm, 8 mm, 10 mm, 12 mm, and keyway variants at 12 mm, 14 mm, and 15 mm. For shafts that transmit significant torque, choose a keyway bore to prevent slipping. Measure your shaft with calipers before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the corrosion resistance of brass bevel gears?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eBrass offers good resistance to atmospheric corrosion and mild moisture exposure, making it suitable for indoor mechanical assemblies and light-duty outdoor enclosures. It is not recommended for continuous immersion in water or exposure to strong acids. For harsh environments, consider stainless steel alternatives.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow strong are these bevel gears under load?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eBrass is a moderate-strength material well-suited for light-to-medium duty applications such as robotics, instrumentation, and small CNC drives. For heavy industrial loads or high-speed continuous operation, steel bevel gears are typically recommended. The 40-tooth gear, being larger in diameter, will generally handle higher torque than the 15-tooth gear at the same module.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use these gears with a stepper or servo motor shaft?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. Select the bore size that matches your motor shaft diameter. Common stepper motor shaft sizes are 5 mm and 6.35 mm — the 5 mm and 6 mm bore options cover most standard NEMA 17 and NEMA 23 stepper shafts. For servo motors with larger shafts, the 8 mm–15 mm bore variants are available, including keyway options for positive torque transfer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDo I need to lubricate these gears during operation?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eBrass gears can run dry at low speeds and light loads, but applying a thin film of gear grease or light machine oil at the mesh point will significantly extend service life and reduce noise. For continuous-duty or higher-speed applications, periodic re-lubrication is recommended.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your tooth count and bore size above, then add to cart.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"HomeDIYer","offers":[{"title":"Module 1【15 Tooth】 \/ 4mm \/ 1 pcs","offer_id":52439314661650,"sku":"PENGJGJXCD4227x1","price":16.12,"currency_code":"USD","in_stock":true},{"title":"Module 1【15 Tooth】 \/ 5mm \/ 1 pcs","offer_id":52439314694418,"sku":"PENGJGJXCD4228x1","price":16.12,"currency_code":"USD","in_stock":true},{"title":"Module 1【15 Tooth】 \/ 6mm \/ 1 pcs","offer_id":52439314727186,"sku":"PENGJGJXCD4229x1","price":16.12,"currency_code":"USD","in_stock":true},{"title":"Module 1【30 Tooth】 \/ 6mm \/ 1 pcs","offer_id":52439314759954,"sku":"PENGJGJXCD4230x1","price":30.59,"currency_code":"USD","in_stock":true},{"title":"Module 1【30 Tooth】 \/ 8mm \/ 1 pcs","offer_id":52439314792722,"sku":"PENGJGJXCD4231x1","price":30.31,"currency_code":"USD","in_stock":true},{"title":"Module 1【30 Tooth】 \/ 10mm \/ 1 pcs","offer_id":52439314825490,"sku":"PENGJGJXCD4232x1","price":29.99,"currency_code":"USD","in_stock":true},{"title":"Module 1【20 Tooth】 \/ 6mm \/ 1 pcs","offer_id":52439314858258,"sku":"PENGJGJXCD4233x1","price":19.03,"currency_code":"USD","in_stock":true},{"title":"Module 1【20 Tooth】 \/ 8mm \/ 1 pcs","offer_id":52439314891026,"sku":"PENGJGJXCD4234x1","price":18.75,"currency_code":"USD","in_stock":true},{"title":"Module 1【20 Tooth】 \/ 10mm \/ 1 pcs","offer_id":52439314923794,"sku":"PENGJGJXCD4235x1","price":18.35,"currency_code":"USD","in_stock":true},{"title":"Module 1【40 Tooth】 \/ 8mm \/ 1 pcs","offer_id":52439314956562,"sku":"PENGJGJXCD4236x1","price":46.31,"currency_code":"USD","in_stock":true},{"title":"Module 1【40 Tooth】 \/ 10mm \/ 1 pcs","offer_id":52439314989330,"sku":"PENGJGJXCD4237x1","price":45.95,"currency_code":"USD","in_stock":true},{"title":"Module 1【40 Tooth】 \/ 12mm \/ 1 pcs","offer_id":52439315022098,"sku":"PENGJGJXCD4238x1","price":45.55,"currency_code":"USD","in_stock":true},{"title":"Module 1【40 Tooth】 \/ 12mm + 4mm Keyway \/ 1 pcs","offer_id":52439315054866,"sku":"PENGJGJXCD4239x1","price":46.63,"currency_code":"USD","in_stock":true},{"title":"Module 1【40 Tooth】 \/ 14mm + 5mm Keyway \/ 1 pcs","offer_id":52439315087634,"sku":"PENGJGJXCD4240x1","price":46.17,"currency_code":"USD","in_stock":true},{"title":"Module 1【40 Tooth】 \/ 15mm + 5mm Keyway \/ 1 pcs","offer_id":52439315120402,"sku":"PENGJGJXCD4241x1","price":45.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Main-06_1fcd0bef-da3d-45ae-8868-90a7bf2add2e.jpg?v=1783345711","url":"https:\/\/homediyer.com\/products\/bevel-gear-module-1-brass-15-20-30-40-tooth-90-1-2-pairing-miter-gear-precision","provider":"HomeDIYer","version":"1.0","type":"link"}