{"product_id":"brass-bevel-gear-set-mod-0-5-1-5-1-1-miter-gear-15-30-tooth","title":"Mod 0.5\/0.8\/1\/1.5 Bevel Gear Set Brass 1:1 Pairing 15\/20\/25\/30 Tooth Miter Gear","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eBrass Bevel Gear Set — Precision 1:1 Miter Gears for Robotics, CNC \u0026amp; DIY Drivetrain Builds\u003c\/h2\u003e\n\u003cp\u003eWhen your project demands a reliable 90-degree power transfer without backlash headaches, finding a matched bevel gear pair in the right module and bore can be a real bottleneck. These brass bevel gear sets are designed for makers, robotics builders, and mechanical engineers who need a dimensionally accurate, ready-to-install 1:1 miter gear pair without custom machining.\u003c\/p\u003e\n\u003cp\u003eEach set consists of two matched bevel gears machined from solid brass, offering a smooth tooth profile and consistent pitch accuracy. Available in four module sizes — Mod 0.5, Mod 0.8, Mod 1, and Mod 1.5 — with tooth counts of 15, 20, 25, or 30 teeth depending on the module. Bore diameters range from 3 mm (approx. 0.12 in) up to 15 mm (approx. 0.59 in), with select variants featuring a 4 mm keyway slot for positive shaft locking. Gear outer diameters range approximately 7.5 mm to 45 mm (0.30–1.77 in) depending on module and tooth count.\u003c\/p\u003e\n\u003cp\u003eTypical use cases include 90-degree shaft direction changes in small CNC router builds, robotic arm joint drives requiring compact miter gear pairs, and custom DIY gearbox assemblies where a brass bevel gear set with keyway bore provides secure torque transmission without set-screw slip.\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 Sold as a matched 1:1 pair. Both gears in each set share the same module and tooth count. Bore size is selected per variant — confirm your shaft diameter before ordering. Keyway variants require a corresponding keyway on the shaft.\u003c\/div\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These Brass Bevel Gear Sets\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 solid brass for good corrosion resistance, low friction meshing, and reliable performance in light-to-medium load drivetrain applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e \u003cstrong\u003eFour Module Sizes Available\u003c\/strong\u003e\n\u003cp\u003eChoose from Mod 0.5, 0.8, 1, or 1.5 to match your gear pitch requirements. Wider module selection means fewer compromises when designing your drivetrain.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🎯\u003c\/span\u003e \u003cstrong\u003eTrue 1:1 Matched Pair\u003c\/strong\u003e\n\u003cp\u003eEach set contains two identical bevel gears with the same tooth count, delivering a precise 1:1 speed and torque ratio for 90-degree shaft intersections.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔑\u003c\/span\u003e \u003cstrong\u003eKeyway Bore Options\u003c\/strong\u003e\n\u003cp\u003eSelect variants include a 4 mm keyway slot (on 8 mm, 10 mm, and 12 mm bore sizes) for positive shaft engagement — eliminating set-screw slip under load.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📏\u003c\/span\u003e \u003cstrong\u003eWide Bore Range: 3 mm – 15 mm\u003c\/strong\u003e\n\u003cp\u003eBore options span 3 mm to 15 mm to fit common motor shafts, hobby servo shafts, and standard metric rod stock used in CNC and robotics builds.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚡\u003c\/span\u003e \u003cstrong\u003eMultiple Tooth Counts per Module\u003c\/strong\u003e\n\u003cp\u003eAvailable in 15, 20, 25, or 30 teeth (tooth count availability varies by module), giving you flexibility to balance gear size, speed, and torque in compact assemblies.\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 — Brass Bevel Gear Set\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct Type\u003c\/th\u003e\n\u003ctd\u003eBevel Gear Set (Miter Gear Pair, 1:1 Ratio)\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\u003eGear Ratio\u003c\/th\u003e\n\u003ctd\u003e1:1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eModule (Pitch)\u003c\/th\u003e\n\u003ctd\u003eMod 0.5 \/ Mod 0.8 \/ Mod 1 \/ Mod 1.5 (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTooth Count\u003c\/th\u003e\n\u003ctd\u003e15 \/ 20 \/ 25 \/ 30 teeth (availability varies by module — see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Diameter\u003c\/th\u003e\n\u003ctd\u003e3 mm \/ 4 mm \/ 5 mm \/ 6 mm \/ 8 mm \/ 10 mm \/ 12 mm \/ 14 mm \/ 15 mm (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eKeyway Options\u003c\/th\u003e\n\u003ctd\u003e8 mm + 3 mm keyway \/ 10 mm + 4 mm keyway \/ 12 mm + 4 mm keyway (select variants)\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\u003eOuter Diameter (approx.)\u003c\/th\u003e\n\u003ctd\u003eSee variant options\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\u003eQuantity per Set\u003c\/th\u003e\n\u003ctd\u003e2 gears (matched pair)\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\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 choose the right module size for my project?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe module (Mod) defines the tooth size and pitch of the gear. Smaller modules like Mod 0.5 and Mod 0.8 are suited for compact, low-torque applications such as small robotics or instrument drives. Mod 1 and Mod 1.5 handle higher torque and are common in light CNC and mechanical automation builds. Both gears in a meshing pair must share the same module — mixing modules will result in incorrect meshing and rapid wear.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat bore size should I select for my motor shaft?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eSelect a bore diameter that matches your shaft diameter exactly. Common motor shaft sizes include 3 mm, 4 mm, 5 mm, 6 mm, 8 mm, and 10 mm. If your shaft is metric and falls within our listed bore range, choose the matching size. For shafts requiring a positive lock, choose a keyway variant (available in 8 mm, 10 mm, and 12 mm bore sizes with a 4 mm keyway slot).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDo I need a keyway variant, or will a set screw work?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eFor light-duty or intermittent-load applications, a standard bore with a set screw is typically sufficient. For continuous-duty or higher-torque applications — such as CNC axis drives or robotic joints under load — a keyway bore provides a more secure mechanical connection and prevents rotational slip. If your shaft already has a keyway machined into it, select the matching keyway bore variant.\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 is for a matched set of two bevel gears with the same module and tooth count, forming a complete 1:1 miter gear pair. You do not need to purchase gears separately — both gears in the set are included and are dimensionally matched for correct meshing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow corrosion-resistant is brass for my application?\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, robotics, and light automation. It is not recommended for prolonged submersion or highly acidic\/alkaline environments. For outdoor or wet environments, consider whether a coated or stainless alternative would better suit your needs.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use these bevel gears in a CNC router or 3D printer build?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. Mod 1 and Mod 1.5 bevel gear sets are commonly used in CNC router axis drives and extruder gearboxes where a 90-degree direction change is needed. Mod 0.5 and Mod 0.8 sets are better suited for compact 3D printer or instrument-level mechanisms. Confirm the bore size matches your motor or lead screw shaft before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between 20-tooth and 30-tooth variants of the same module?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eWithin the same module, a higher tooth count results in a larger gear outer diameter and a smoother, quieter mesh due to more teeth in contact. A 30-tooth gear will be physically larger than a 20-tooth gear of the same module. Since the ratio is always 1:1 (both gears have the same tooth count), the choice affects gear size and available bore options rather than speed or torque ratio.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your Module 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 0.5【20 Tooth】 \/ 3mm","offer_id":52439268917522,"sku":"PENGJGJXCD4139x2","price":8.69,"currency_code":"USD","in_stock":true},{"title":"Module 0.5【20 Tooth】 \/ 4mm","offer_id":52439268950290,"sku":"PENGJGJXCD4140x2","price":8.69,"currency_code":"USD","in_stock":true},{"title":"Module 0.5【25 Tooth】 \/ 3mm","offer_id":52439268983058,"sku":"PENGJGJXCD4141x2","price":10.05,"currency_code":"USD","in_stock":true},{"title":"Module 0.5【25 Tooth】 \/ 4mm","offer_id":52439269015826,"sku":"PENGJGJXCD4142x2","price":10.05,"currency_code":"USD","in_stock":true},{"title":"Module 0.5【25 Tooth】 \/ 5mm","offer_id":52439269048594,"sku":"PENGJGJXCD4143x2","price":10.05,"currency_code":"USD","in_stock":true},{"title":"Module 0.5【25 Tooth】 \/ 6mm","offer_id":52439269081362,"sku":"PENGJGJXCD4144x2","price":10.05,"currency_code":"USD","in_stock":true},{"title":"Module 0.5【30 Tooth】 \/ 4mm","offer_id":52439269114130,"sku":"PENGJGJXCD4145x2","price":11.27,"currency_code":"USD","in_stock":true},{"title":"Module 0.5【30 Tooth】 \/ 5mm","offer_id":52439269146898,"sku":"PENGJGJXCD4146x2","price":11.27,"currency_code":"USD","in_stock":true},{"title":"Module 0.5【30 Tooth】 \/ 6mm","offer_id":52439269179666,"sku":"PENGJGJXCD4147x2","price":11.27,"currency_code":"USD","in_stock":true},{"title":"Module 0.8【20 Tooth】 \/ 4mm","offer_id":52439269212434,"sku":"PENGJGJXCD4148x2","price":10.68,"currency_code":"USD","in_stock":true},{"title":"Module 0.8【20 Tooth】 \/ 5mm","offer_id":52439269245202,"sku":"PENGJGJXCD4149x2","price":11.0,"currency_code":"USD","in_stock":true},{"title":"Module 0.8【20 Tooth】 \/ 6mm","offer_id":52439269277970,"sku":"PENGJGJXCD4150x2","price":10.95,"currency_code":"USD","in_stock":true},{"title":"Module 0.8【25 Tooth】 \/ 5mm","offer_id":52439269310738,"sku":"PENGJGJXCD4151x2","price":13.4,"currency_code":"USD","in_stock":true},{"title":"Module 0.8【25 Tooth】 \/ 6mm","offer_id":52439269343506,"sku":"PENGJGJXCD4152x2","price":13.72,"currency_code":"USD","in_stock":true},{"title":"Module 0.8【25 Tooth】 \/ 8mm","offer_id":52439269376274,"sku":"PENGJGJXCD4153x2","price":13.59,"currency_code":"USD","in_stock":true},{"title":"Module 0.8【25 Tooth】 \/ 10mm","offer_id":52439269409042,"sku":"PENGJGJXCD4154x2","price":13.45,"currency_code":"USD","in_stock":true},{"title":"Module 0.8【30 Tooth】 \/ 6mm","offer_id":52439269441810,"sku":"PENGJGJXCD4155x2","price":16.85,"currency_code":"USD","in_stock":true},{"title":"Module 0.8【30 Tooth】 \/ 8mm","offer_id":52439269474578,"sku":"PENGJGJXCD4156x2","price":16.71,"currency_code":"USD","in_stock":true},{"title":"Module 0.8【30 Tooth】 \/ 10mm","offer_id":52439269507346,"sku":"PENGJGJXCD4157x2","price":16.58,"currency_code":"USD","in_stock":true},{"title":"Module 0.8【30 Tooth】 \/ 12mm","offer_id":52439269540114,"sku":"PENGJGJXCD4158x2","price":16.31,"currency_code":"USD","in_stock":true},{"title":"Module 1【15 Tooth】 \/ 4mm","offer_id":52439269572882,"sku":"PENGJGJXCD4159x2","price":10.05,"currency_code":"USD","in_stock":true},{"title":"Module 1【15 Tooth】 \/ 5mm","offer_id":52439269605650,"sku":"PENGJGJXCD4160x2","price":9.64,"currency_code":"USD","in_stock":true},{"title":"Module 1【15 Tooth】 \/ 6mm","offer_id":52439269638418,"sku":"PENGJGJXCD4161x2","price":9.91,"currency_code":"USD","in_stock":true},{"title":"Module 1【20 Tooth】 \/ 5mm","offer_id":52439269671186,"sku":"PENGJGJXCD4162x2","price":12.99,"currency_code":"USD","in_stock":true},{"title":"Module 1【20 Tooth】 \/ 6mm","offer_id":52439269703954,"sku":"PENGJGJXCD4163x2","price":12.91,"currency_code":"USD","in_stock":true},{"title":"Module 1【20 Tooth】 \/ 8mm","offer_id":52439269736722,"sku":"PENGJGJXCD4164x2","price":12.04,"currency_code":"USD","in_stock":true},{"title":"Module 1【20 Tooth】 \/ 10mm","offer_id":52439269769490,"sku":"PENGJGJXCD4165x2","price":12.5,"currency_code":"USD","in_stock":true},{"title":"Module 1【20 Tooth】 \/ 8mm + 3mm Keyway","offer_id":52439269802258,"sku":"PENGJGJXCD4178x2","price":14.08,"currency_code":"USD","in_stock":true},{"title":"Module 1【25 Tooth】 \/ 6mm","offer_id":52439269835026,"sku":"PENGJGJXCD4166x2","price":16.12,"currency_code":"USD","in_stock":true},{"title":"Module 1【25 Tooth】 \/ 8mm","offer_id":52439269867794,"sku":"PENGJGJXCD4167x2","price":15.98,"currency_code":"USD","in_stock":true},{"title":"Module 1【25 Tooth】 \/ 10mm","offer_id":52439269900562,"sku":"PENGJGJXCD4168x2","price":15.76,"currency_code":"USD","in_stock":true},{"title":"Module 1【25 Tooth】 \/ 10mm + 4mm Keyway","offer_id":52439269933330,"sku":"PENGJGJXCD4179x2","price":16.99,"currency_code":"USD","in_stock":true},{"title":"Module 1【25 Tooth】 \/ 12mm","offer_id":52439269966098,"sku":"PENGJGJXCD4169x2","price":15.49,"currency_code":"USD","in_stock":true},{"title":"Module 1【30 Tooth】 \/ 8mm","offer_id":52439269998866,"sku":"PENGJGJXCD4170x2","price":21.61,"currency_code":"USD","in_stock":true},{"title":"Module 1【30 Tooth】 \/ 10mm","offer_id":52439270031634,"sku":"PENGJGJXCD4171x2","price":21.34,"currency_code":"USD","in_stock":true},{"title":"Module 1【30 Tooth】 \/ 10mm + 4mm Keyway","offer_id":52439270064402,"sku":"PENGJGJXCD4180x2","price":22.64,"currency_code":"USD","in_stock":true},{"title":"Module 1【30 Tooth】 \/ 12mm","offer_id":52439270097170,"sku":"PENGJGJXCD4172x2","price":21.07,"currency_code":"USD","in_stock":true},{"title":"Module 1【30 Tooth】 \/ 12mm + 4mm Keyway","offer_id":52439270129938,"sku":"PENGJGJXCD4181x2","price":19.57,"currency_code":"USD","in_stock":true},{"title":"Module 1.5【20 Tooth】 \/ 8mm","offer_id":52439270162706,"sku":"PENGJGJXCD4173x2","price":23.38,"currency_code":"USD","in_stock":true},{"title":"Module 1.5【20 Tooth】 \/ 10mm","offer_id":52439270195474,"sku":"PENGJGJXCD4174x2","price":23.11,"currency_code":"USD","in_stock":true},{"title":"Module 1.5【20 Tooth】 \/ 10mm + 4mm Keyway","offer_id":52439270228242,"sku":"PENGJGJXCD4182x2","price":24.41,"currency_code":"USD","in_stock":true},{"title":"Module 1.5【20 Tooth】 \/ 12mm","offer_id":52439270261010,"sku":"PENGJGJXCD4175x2","price":22.78,"currency_code":"USD","in_stock":true},{"title":"Module 1.5【20 Tooth】 \/ 12mm + 4mm Keyway","offer_id":52439270293778,"sku":"PENGJGJXCD4183x2","price":24.06,"currency_code":"USD","in_stock":true},{"title":"Module 1.5【20 Tooth】 \/ 14mm","offer_id":52439270326546,"sku":"PENGJGJXCD4176x2","price":22.37,"currency_code":"USD","in_stock":true},{"title":"Module 1.5【20 Tooth】 \/ 15mm","offer_id":52439270359314,"sku":"PENGJGJXCD4177x2","price":22.15,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture3of17_5451e11e-2ce1-41d6-9364-ec40ab120ad2.jpg?v=1782955972","url":"https:\/\/homediyer.com\/products\/brass-bevel-gear-set-mod-0-5-1-5-1-1-miter-gear-15-30-tooth","provider":"HomeDIYer","version":"1.0","type":"link"}