{"product_id":"2pcs-20t-8mm-metal-bevel-gear-right-angle-drive-gears-modulus-1-model-diy","title":"2pcs 20T 8mm Metal Bevel Gear Right Angle Drive Gears Modulus 1 Model DIY","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003e20T 8mm Metal Bevel Gear — Right Angle Drive for DIY Robots, RC \u0026amp; Model Builds\u003c\/h2\u003e\n\u003cp\u003eWhen your project demands a reliable 90° power transfer and off-the-shelf gears just don't fit, you need a bevel gear that's dimensionally consistent and tough enough to handle repeated load cycles. These 20-tooth metal bevel gears are designed for makers, robotics enthusiasts, RC builders, and mechanical model hobbyists who need precise right-angle drive transmission without custom machining.\u003c\/p\u003e\n\u003cp\u003eEach set contains 2 pieces of 20T (20-tooth) bevel gears with an 8mm bore diameter, manufactured to Modulus 1 (M1) specification. The gears are machined from metal (typically steel or zinc alloy, depending on variant) with a tooth profile optimized for smooth meshing at 90°. Overall gear outer diameter is typically 22–24mm (~0.87–0.94 in), with a face width of approximately 8–12mm (~0.31–0.47 in).\u003c\/p\u003e\n\u003cp\u003eTypical use cases include DIY robotic arm joints requiring right-angle torque redirection, RC car differential and steering assemblies, and mechanical scale model transmissions where compact 90° drives are essential for authentic motion replication.\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 Fits 8mm shafts. Designed for Modulus 1 (M1) gear systems. Meshes with matching M1 20T bevel gears for 1:1 right-angle drive. Verify shaft diameter and module before ordering.\u003c\/div\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These Metal Bevel Gears\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-list\"\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e \u003cstrong\u003e20-Tooth M1 Profile\u003c\/strong\u003e — Modulus 1 tooth geometry ensures accurate meshing with standard M1 bevel gear counterparts, delivering smooth and consistent right-angle torque transfer.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e \u003cstrong\u003e8mm Bore Diameter\u003c\/strong\u003e — Precision-bored 8mm shaft hole fits common DIY motor shafts and drive rods used in robotics and RC applications without modification.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚙️\u003c\/span\u003e \u003cstrong\u003e90° Right Angle Drive\u003c\/strong\u003e — Bevel gear geometry enables efficient power transmission at a true 90° angle, ideal for changing drive direction in compact mechanical assemblies.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🛡️\u003c\/span\u003e \u003cstrong\u003eMetal Construction\u003c\/strong\u003e — Machined metal build (steel or zinc alloy depending on variant) provides durability and wear resistance under repeated load cycles compared to plastic alternatives.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e \u003cstrong\u003eSold as a Matched Pair\u003c\/strong\u003e — Each order includes 2 gears pre-matched for M1 20T bevel meshing, so you receive a complete right-angle drive pair ready to install.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔧\u003c\/span\u003e \u003cstrong\u003eDIY \u0026amp; Model Friendly\u003c\/strong\u003e — Compact dimensions and standard M1 spec make these gears compatible with a wide range of hobby CNC, 3D-printed chassis, and mechanical model kits.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ch2\u003e📐 Technical Specifications — Metal Bevel Gears\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eNumber of Teeth\u003c\/th\u003e\n\u003ctd\u003e20T (20 teeth)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Diameter\u003c\/th\u003e\n\u003ctd\u003e8mm (0.31 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eModule (Modulus)\u003c\/th\u003e\n\u003ctd\u003eM1 (Modulus 1)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDrive Angle\u003c\/th\u003e\n\u003ctd\u003e90° (right angle bevel)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGear Ratio (pair)\u003c\/th\u003e\n\u003ctd\u003e1:1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOuter Diameter\u003c\/th\u003e\n\u003ctd\u003eTypically 22–24mm (~0.87–0.94 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFace Width\u003c\/th\u003e\n\u003ctd\u003eTypically 8–12mm (~0.31–0.47 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFinish \/ Coating\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\u003e2 pieces (1 matched pair)\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\u003eApplication\u003c\/th\u003e\n\u003ctd\u003eDIY robotics, RC models, mechanical scale models\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\u003eWhat shaft size do these bevel gears fit?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThese gears have an 8mm bore diameter, designed to fit standard 8mm round shafts. If your motor or drive shaft is a different diameter, you will need a bushing or a different bore size variant. Always measure your shaft before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use just one gear, or do I need both pieces?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eFor a functional 90° right-angle drive, you need a matched pair — one gear on each shaft. This listing includes 2 pieces, giving you a complete bevel gear set. Both gears are 20T M1, so they mesh together at a 1:1 ratio.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre these gears compatible with other Modulus 1 bevel gears?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. These gears follow the standard Modulus 1 (M1) tooth profile, which means they will mesh correctly with any other M1 20T bevel gear of the same pressure angle (20°). Always confirm the module and tooth count match before mixing gear brands.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow strong are these metal bevel gears for robotics use?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eMetal bevel gears offer significantly better load capacity and wear resistance than plastic equivalents. They are well-suited for light-to-medium duty robotics, RC drivetrains, and model mechanisms. For heavy industrial torque loads, consult the specific material variant and verify torque ratings against your application requirements.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDo these gears resist corrosion?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eCorrosion resistance depends on the material variant. Steel gears may benefit from a light coating of machine oil for long-term storage or outdoor use. Zinc alloy variants offer moderate natural corrosion resistance. For high-humidity or wet environments, periodic lubrication is recommended.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between Modulus 1 and other gear modules?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe module (M) defines the tooth size — M1 means 1mm per tooth pitch diameter unit. M1 gears have smaller, finer teeth compared to M2 or M3. They are ideal for compact, low-to-medium torque applications like hobby robotics and scale models. Gears of different modules cannot mesh together.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use these in a 3D-printed chassis or frame?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. The compact M1 20T bevel gear dimensions make them a popular choice for 3D-printed robot frames and mechanical model kits. Ensure your printed gear housing is designed for an 8mm shaft bore and allows proper gear mesh clearance for smooth operation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your quantity above, then add to cart.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"HomeDIYer","offers":[{"title":"Default Title","offer_id":52439389503762,"sku":"CS-0398","price":5.24,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture1of5_07bea165-01ad-4b1e-9a7f-71aec50db305.jpg?v=1783412495","url":"https:\/\/homediyer.com\/products\/2pcs-20t-8mm-metal-bevel-gear-right-angle-drive-gears-modulus-1-model-diy","provider":"HomeDIYer","version":"1.0","type":"link"}