{"product_id":"bevel-gear-set-mod-1-5-2-2-5-3-steel-1-2-pairing-15-30-16-32-18-36-20-40-tooth","title":"Bevel Gear Set Mod 1.5 2 2.5 3 Steel 1:2 Pairing 15\/30 16\/32 18\/36 20\/40 Tooth","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eSteel Bevel Gear Set — Precision 1:2 Ratio Drive for Makers \u0026amp; Engineers\u003c\/h2\u003e\n\u003cp\u003eWhen your build demands a reliable right-angle or angular power transfer, mismatched or low-tolerance gears become the weakest link in the drivetrain. Whether you are a robotics hobbyist, a CNC machine builder, or a mechanical engineering student, these steel bevel gear pairs give you the dimensional accuracy and material strength needed to transmit torque cleanly across intersecting shafts.\u003c\/p\u003e\n\u003cp\u003eEach set consists of a matched pinion and gear pair machined from carbon steel, available in four module sizes — Mod 1.5, Mod 2, Mod 2.5, and Mod 3 — and four tooth-count pairings: 15\/30, 16\/32, 18\/36, and 20\/40, all maintaining a consistent 1:2 speed reduction ratio. Gear outer diameters range from approximately 22.5 mm (0.89 in) for the smallest Mod 1.5 \/ 15T pinion up to approximately 120 mm (4.72 in) for the largest Mod 3 \/ 40T gear, covering a wide span of torque and speed requirements.\u003c\/p\u003e\n\u003cp\u003eTypical applications include DIY gearbox assemblies requiring a 2:1 reduction, right-angle drive systems in small CNC routers and laser cutters, robotic arm joint actuators needing compact angular transmission, and educational mechanical engineering models demonstrating bevel gear kinematics.\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 for intersecting-shaft drives at standard pressure angles. Verify bore diameter and keyway requirements against your shaft spec before ordering. All pairs share a 1:2 tooth ratio within the same module.\u003c\/div\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These Steel 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\u003eCarbon Steel Construction\u003c\/strong\u003e\n\u003cp\u003eMachined from carbon steel for solid load-bearing capacity and resistance to deformation under sustained torque loads in mechanical drive applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e \u003cstrong\u003eFour Module Sizes in One Listing\u003c\/strong\u003e\n\u003cp\u003eChoose from Mod 1.5, 2, 2.5, or 3 to match your existing gear train pitch. All modules are available in four tooth-count pairings for flexible ratio matching.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚖️\u003c\/span\u003e \u003cstrong\u003eConsistent 1:2 Speed Reduction Ratio\u003c\/strong\u003e\n\u003cp\u003eEvery pairing — 15\/30, 16\/32, 18\/36, and 20\/40 — delivers an exact 2:1 reduction, making speed and torque calculations straightforward for your drivetrain design.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🎯\u003c\/span\u003e \u003cstrong\u003eMatched Pair Sold Together\u003c\/strong\u003e\n\u003cp\u003ePinion and gear are supplied as a pre-matched set, ensuring correct tooth mesh geometry and eliminating the guesswork of sourcing compatible individual gears separately.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e \u003cstrong\u003eRight-Angle Power Transmission\u003c\/strong\u003e\n\u003cp\u003eBevel geometry enables smooth torque transfer between intersecting shafts, ideal for changing drive direction in compact robotic joints, gearboxes, and DIY mechanical assemblies.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e \u003cstrong\u003eWide Size Range for Scalable Builds\u003c\/strong\u003e\n\u003cp\u003eFrom the compact Mod 1.5 \/ 15T \u0026amp; 30T pair to the larger Mod 3 \/ 20T \u0026amp; 40T set, this listing covers multiple build scales so you can prototype and scale without switching suppliers.\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 — Bevel Gear Set\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eCarbon Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGear Type\u003c\/th\u003e\n\u003ctd\u003eStraight Bevel Gear\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eModule (Mod)\u003c\/th\u003e\n\u003ctd\u003e1.5 \/ 2 \/ 2.5 \/ 3 (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTooth Pairing\u003c\/th\u003e\n\u003ctd\u003e15\u0026amp;30 \/ 16\u0026amp;32 \/ 18\u0026amp;36 \/ 20\u0026amp;40 (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSpeed Ratio\u003c\/th\u003e\n\u003ctd\u003e1:2\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\u003eShaft Angle\u003c\/th\u003e\n\u003ctd\u003e90°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePinion Outer Diameter\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGear Outer Diameter\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Diameter\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSurface Finish\u003c\/th\u003e\n\u003ctd\u003eNatural \/ Uncoated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSold As\u003c\/th\u003e\n\u003ctd\u003e1 Matched Pair (Pinion + Gear)\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\u003eModule (Mod) is the fundamental sizing unit for metric gears — it defines tooth size and pitch. A larger module means larger, stronger teeth suited for higher torque, while a smaller module gives finer teeth for compact, lower-torque applications. Match the module of this gear set to the module of any existing gears in your drivetrain. If you are designing from scratch, select based on the torque load: Mod 1.5 for light-duty models, Mod 2–2.5 for mid-range robotics, and Mod 3 for heavier mechanical assemblies.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat tooth pairing should I select for my speed reduction needs?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eAll four pairings in this listing — 15\/30, 16\/32, 18\/36, and 20\/40 — deliver the same 1:2 speed reduction ratio. The difference lies in the physical size of the gears: a 15\/30 pair is more compact, while a 20\/40 pair is larger and can handle greater torque. Choose a larger tooth count if you need more load capacity or smoother meshing at higher speeds.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre these gears strong enough for robotics and CNC applications?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. Carbon steel provides solid tensile strength and resistance to tooth deformation under sustained loads, making these bevel gear sets suitable for robotic arm joints, small CNC axis drives, and DIY gearbox builds. For very high-speed or heavy industrial loads, verify the specific torque rating against your application requirements before use.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWill these gears rust or corrode over time?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eCarbon steel is susceptible to surface oxidation if exposed to moisture without protection. For indoor or dry-environment applications, the natural finish is typically sufficient. If your application involves humidity or occasional moisture exposure, applying a light machine oil or grease to the gear teeth will protect the surface and also improve meshing lubrication.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre the pinion and gear bored to fit a specific shaft diameter?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eBore diameter varies by module and tooth count. Please refer to the variant detail or contact us to confirm the bore size for your selected module before ordering. If your shaft diameter differs, the bore can often be machined to size by a local machine shop.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use gears from different module sizes together?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eNo — gears must share the same module to mesh correctly. Mixing Mod 1.5 with Mod 2 gears, for example, will result in incorrect tooth engagement, noise, and accelerated wear. Always confirm that all gears in your drivetrain share the same module value.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs this listing for a single gear or a matched pair?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eEach purchase includes one matched pair — both the pinion (smaller gear) and the mating gear (larger gear) — as indicated by the tooth count pairing in the variant name (e.g., 15 Tooth \u0026amp; 30 Tooth). You do not need to purchase them separately.\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 tooth pairing 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【15 Tooth \u0026 30 Tooth】","offer_id":52439270916370,"sku":"PENGJGJXCD0043x1","price":17.61,"currency_code":"USD","in_stock":true},{"title":"Module 1.5【16 Tooth \u0026 32 Tooth】","offer_id":52439270949138,"sku":"PENGJGJXCD0044x1","price":18.02,"currency_code":"USD","in_stock":true},{"title":"Module 1.5【18 Tooth \u0026 36 Tooth】","offer_id":52439270981906,"sku":"PENGJGJXCD0045x1","price":19.98,"currency_code":"USD","in_stock":true},{"title":"Module 1.5【20 Tooth \u0026 40 Tooth】","offer_id":52439271014674,"sku":"PENGJGJXCD0046x1","price":24.19,"currency_code":"USD","in_stock":true},{"title":"Module 2【15 Tooth \u0026 30 Tooth】","offer_id":52439271047442,"sku":"PENGJGJXCD0047x1","price":28.22,"currency_code":"USD","in_stock":true},{"title":"Module 2【16 Tooth \u0026 32 Tooth】","offer_id":52439271080210,"sku":"PENGJGJXCD0048x1","price":28.95,"currency_code":"USD","in_stock":true},{"title":"Module 2【18 Tooth \u0026 36 Tooth】","offer_id":52439271112978,"sku":"PENGJGJXCD0049x1","price":31.13,"currency_code":"USD","in_stock":true},{"title":"Module 2【20 Tooth \u0026 40 Tooth】","offer_id":52439271145746,"sku":"PENGJGJXCD0050x1","price":43.91,"currency_code":"USD","in_stock":true},{"title":"Module 2.5【15 Tooth \u0026 30 Tooth】","offer_id":52439271178514,"sku":"PENGJGJXCD0051x1","price":38.69,"currency_code":"USD","in_stock":true},{"title":"Module 2.5【16 Tooth \u0026 32 Tooth】","offer_id":52439271211282,"sku":"PENGJGJXCD0052x1","price":44.32,"currency_code":"USD","in_stock":true},{"title":"Module 2.5【18 Tooth \u0026 36 Tooth】","offer_id":52439271244050,"sku":"PENGJGJXCD0053x1","price":45.9,"currency_code":"USD","in_stock":true},{"title":"Module 2.5【20 Tooth \u0026 40 Tooth】","offer_id":52439271276818,"sku":"PENGJGJXCD0054x1","price":56.43,"currency_code":"USD","in_stock":true},{"title":"Module 3【15 Tooth \u0026 30 Tooth】","offer_id":52439271309586,"sku":"PENGJGJXCD0055x1","price":65.95,"currency_code":"USD","in_stock":true},{"title":"Module 3【18 Tooth \u0026 36 Tooth】","offer_id":52439271342354,"sku":"PENGJGJXCD0056x1","price":92.06,"currency_code":"USD","in_stock":true},{"title":"Module 3【20 Tooth \u0026 40 Tooth】","offer_id":52439271375122,"sku":"PENGJGJXCD0057x1","price":95.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture7of23_2e2a57e1-7959-4401-a735-8dde113129d0.jpg?v=1782955667","url":"https:\/\/homediyer.com\/products\/bevel-gear-set-mod-1-5-2-2-5-3-steel-1-2-pairing-15-30-16-32-18-36-20-40-tooth","provider":"HomeDIYer","version":"1.0","type":"link"}