{"product_id":"mod-1-5-bevel-gear-brass-20-tooth-miter-gear-bore-8mm-15mm","title":"Mod 1.5 Bevel Gear Brass 1:1 Pairing 20 Tooth Miter Gear Bore 8mm-15mm Precision","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eMod 1.5 Brass Bevel Gear — Precision 1:1 Miter Gear for Reliable Right-Angle Power Transmission\u003c\/h2\u003e\n\u003cp\u003eWhen your build demands a clean 90° direction change without slippage or backlash, finding a bevel gear that fits your shaft precisely is the real challenge. Whether you're a robotics builder, CNC hobbyist, or mechanical engineer prototyping a drive system, mismatched bore sizes or soft materials can ruin an otherwise solid design. These Mod 1.5 brass bevel gears are engineered for makers and professionals who need repeatable, low-noise right-angle transmission in compact assemblies.\u003c\/p\u003e\n\u003cp\u003eEach gear is machined from solid brass, offering a balance of machinability, corrosion resistance, and moderate strength. The module (pitch) is 1.5, with 20 teeth and a 1:1 gear ratio, meaning both mating gears are identical — simplifying your BOM. Bore sizes range from 8mm to 15mm (approximately 0.31\" to 0.59\"), with select variants featuring a 4mm keyway for positive shaft locking. Overall gear diameter is approximately 33mm (≈1.30\"), with a face width of typically 10–14mm.\u003c\/p\u003e\n\u003cp\u003eThese miter gears are well-suited for DIY gearbox builds requiring 90-degree shaft redirection, small-scale CNC axis drives where compact bevel gear sets reduce footprint, and robotics joint mechanisms needing a brass miter gear with keyway for torque-positive connections. The 1:1 ratio also makes them ideal for differential drive systems in RC vehicles and automation rigs.\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 Designed to pair with an identical Mod 1.5 \/ 20-tooth bevel gear at 90°. Shaft bore options: 8mm, 10mm, 12mm, 14mm, 15mm — with or without 4mm keyway. Verify your shaft diameter before ordering.\u003c\/div\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These Mod 1.5 Brass Bevel Gears\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-list\"\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e \u003cstrong\u003eTrue 1:1 Miter Gear Pairing\u003c\/strong\u003e — Both gears in a pair are identical (20T \/ Mod 1.5), simplifying sourcing and ensuring a balanced 90° mesh with no speed change.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🟡\u003c\/span\u003e \u003cstrong\u003eSolid Brass Construction\u003c\/strong\u003e — Brass offers natural corrosion resistance, low friction against steel shafts, and quieter operation compared to steel-on-steel gear sets — ideal for indoor mechanisms and instrumentation.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e \u003cstrong\u003eMultiple Bore Sizes with Keyway Options\u003c\/strong\u003e — Available in 8mm, 10mm, 12mm, 14mm, and 15mm bore diameters. Select variants include a 4mm keyway slot for positive, slip-free shaft engagement under load.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚡\u003c\/span\u003e \u003cstrong\u003ePrecision-Machined Teeth\u003c\/strong\u003e — Module 1.5 tooth profile ensures consistent pitch and smooth meshing. Tooth count of 20 provides a compact gear diameter while maintaining adequate tooth strength for light-to-medium duty loads.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e \u003cstrong\u003eFlexible Quantity Options\u003c\/strong\u003e — Available in 1-piece or 2-piece sets. Order a single gear to replace a worn component, or grab a matched pair for a complete 90° drive assembly in one transaction.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔧\u003c\/span\u003e \u003cstrong\u003eDrop-In Ready for Standard Shafts\u003c\/strong\u003e — Bores are machined to standard metric shaft diameters, compatible with common motor output shafts, lead screws, and drive rods used in DIY and light industrial applications.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ch2\u003e📐 Technical Specifications — Mod 1.5 Bevel Gear\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eModule (Pitch)\u003c\/th\u003e\n\u003ctd\u003e1.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNumber of Teeth\u003c\/th\u003e\n\u003ctd\u003e20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGear Ratio\u003c\/th\u003e\n\u003ctd\u003e1:1 (Miter \/ Bevel)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePressure Angle\u003c\/th\u003e\n\u003ctd\u003e20°\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\u003ePitch Diameter\u003c\/th\u003e\n\u003ctd\u003e30mm (≈1.18\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutside Diameter\u003c\/th\u003e\n\u003ctd\u003eApprox. 33mm (≈1.30\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFace Width\u003c\/th\u003e\n\u003ctd\u003eTypically 10–14mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Diameter\u003c\/th\u003e\n\u003ctd\u003e8mm \/ 10mm \/ 12mm \/ 14mm \/ 15mm (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eKeyway\u003c\/th\u003e\n\u003ctd\u003e4mm keyway available on select bore sizes (see variant options)\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\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eNatural brass (uncoated)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight (per piece)\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 or 2 pcs (see variant options)\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 bore size for my shaft?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eMeasure your motor or drive shaft diameter with a caliper. Select the bore size that matches exactly — for example, if your shaft is 10mm, choose the 10mm bore variant. If your application involves significant torque or reversing loads, consider the keyway variant (e.g., 10mm + 4mm Keyway) to prevent rotational slipping on the shaft.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between the standard bore and the keyway variant?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe standard bore relies on a set screw or press fit to secure the gear to the shaft. The keyway variant includes a 4mm slot machined into the bore, which accepts a matching key on the shaft — this creates a positive mechanical lock that handles higher torque and prevents the gear from spinning independently of the shaft under load.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I pair two gears from different bore size variants together?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. The mating performance depends on the module (1.5) and tooth count (20), not the bore size. You can pair a 10mm bore gear with a 15mm bore gear — they will mesh correctly at 90° as long as both are Mod 1.5 \/ 20-tooth bevel gears. Each gear mounts independently on its own shaft.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs brass strong enough for my application?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eBrass bevel gears are well-suited for light-to-medium duty applications such as robotics, instrumentation, small CNC machines, and DIY automation. Brass offers good machinability and corrosion resistance, and runs quietly against steel shafts. For heavy-duty industrial loads or high-speed continuous operation, a steel or hardened alloy gear would be more appropriate.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWill these gears corrode or rust over time?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eBrass is inherently corrosion-resistant and will not rust. It may develop a natural patina (surface oxidation) over time in humid environments, but this does not affect mechanical performance. For applications in wet or outdoor environments, periodic lubrication with a compatible grease is recommended to extend service life.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDo I need to buy two gears to make a working 90° drive?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes — a bevel gear drive requires two mating gears. Since this is a 1:1 miter gear set, both gears are identical (Mod 1.5, 20 tooth). You can select the \"2 pcs\" quantity variant to receive a matched pair in one order, or purchase two individual \"1 pcs\" variants if you need different bore sizes for each shaft.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat lubrication should I use with these brass bevel gears?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eA light machine oil or lithium-based grease applied to the tooth faces is sufficient for most applications. Avoid heavy petroleum greases that may attract debris. For low-speed, low-load applications, brass gears can often run dry for extended periods, but lubrication will reduce wear and noise over time.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your \u003cstrong\u003eModels, Bore Size, and Amount\u003c\/strong\u003e above, then add to cart.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"HomeDIYer","offers":[{"title":"Module 1.5【20 Tooth】 \/ 8mm \/ 1 pcs","offer_id":52439359160594,"sku":"PENGJGJXCD4173x1","price":12.17,"currency_code":"USD","in_stock":true},{"title":"Module 1.5【20 Tooth】 \/ 10mm \/ 1 pcs","offer_id":52439359193362,"sku":"PENGJGJXCD4174x1","price":12.04,"currency_code":"USD","in_stock":true},{"title":"Module 1.5【20 Tooth】 \/ 10mm + 4mm Keyway \/ 1 pcs","offer_id":52439359226130,"sku":"PENGJGJXCD4182x1","price":12.63,"currency_code":"USD","in_stock":true},{"title":"Module 1.5【20 Tooth】 \/ 12mm \/ 1 pcs","offer_id":52439359258898,"sku":"PENGJGJXCD4175x1","price":11.82,"currency_code":"USD","in_stock":true},{"title":"Module 1.5【20 Tooth】 \/ 12mm + 4mm Keyway \/ 1 pcs","offer_id":52439359291666,"sku":"PENGJGJXCD4183x1","price":12.5,"currency_code":"USD","in_stock":true},{"title":"Module 1.5【20 Tooth】 \/ 14mm \/ 1 pcs","offer_id":52439359324434,"sku":"PENGJGJXCD4176x1","price":11.63,"currency_code":"USD","in_stock":true},{"title":"Module 1.5【20 Tooth】 \/ 15mm \/ 1 pcs","offer_id":52439359357202,"sku":"PENGJGJXCD4177x1","price":11.55,"currency_code":"USD","in_stock":true},{"title":"Module 1.5【20 Tooth】 \/ 8mm \/ 2 pcs","offer_id":52439359389970,"sku":"PENGJGJXCD4173x2","price":23.38,"currency_code":"USD","in_stock":true},{"title":"Module 1.5【20 Tooth】 \/ 10mm \/ 2 pcs","offer_id":52439359422738,"sku":"PENGJGJXCD4174x2","price":23.11,"currency_code":"USD","in_stock":true},{"title":"Module 1.5【20 Tooth】 \/ 10mm + 4mm Keyway \/ 2 pcs","offer_id":52439359455506,"sku":"PENGJGJXCD4182x2","price":24.41,"currency_code":"USD","in_stock":true},{"title":"Module 1.5【20 Tooth】 \/ 12mm \/ 2 pcs","offer_id":52439359488274,"sku":"PENGJGJXCD4175x2","price":22.78,"currency_code":"USD","in_stock":true},{"title":"Module 1.5【20 Tooth】 \/ 12mm + 4mm Keyway \/ 2 pcs","offer_id":52439359521042,"sku":"PENGJGJXCD4183x2","price":24.06,"currency_code":"USD","in_stock":true},{"title":"Module 1.5【20 Tooth】 \/ 14mm \/ 2 pcs","offer_id":52439359553810,"sku":"PENGJGJXCD4176x2","price":22.37,"currency_code":"USD","in_stock":true},{"title":"Module 1.5【20 Tooth】 \/ 15mm \/ 2 pcs","offer_id":52439359586578,"sku":"PENGJGJXCD4177x2","price":22.15,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture3of7_8dc7a331-99b7-4c0a-b854-4a129e94ac35.jpg?v=1783406111","url":"https:\/\/homediyer.com\/products\/mod-1-5-bevel-gear-brass-20-tooth-miter-gear-bore-8mm-15mm","provider":"HomeDIYer","version":"1.0","type":"link"}