{"product_id":"1-2-1-3-metal-motor-bevel-gears-1-5-3-modulus-15-54tooth-90-pairing-45-steel","title":"1:2\/1:3 Metal Motor Bevel Gears 1.5-3 Modulus 15-54Tooth 90° Pairing 45# Steel","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eMetal Motor Bevel Gears — Precision 90° Power Transmission for Robotics \u0026amp; DIY Drives\u003c\/h2\u003e\n\u003cp\u003eWhen your motor shaft needs to change direction without losing torque, a mismatched or undersized bevel gear set becomes the weakest link in your entire drivetrain. Engineers, robotics builders, and CNC hobbyists who demand repeatable, low-backlash 90° power transmission need a gear pair machined to tight tolerances — not a cast approximation. These metal motor bevel gears are designed for makers and mechanical engineers who refuse to compromise on dimensional accuracy.\u003c\/p\u003e\n\u003cp\u003eEach set consists of a matched pinion and ring gear pair, machined from 45# medium-carbon steel for a balance of hardness and toughness. Available in modulus 1.5, 2, 2.5, and 3, with tooth counts ranging from 15T to 54T (approximately 0.59 in to 2.13 in pitch diameter depending on modulus), the pairs are pre-matched at a 90° shaft angle and offered in 1:2 and 1:3 reduction ratios. Bore diameter and keyway dimensions vary by model — see variant options for exact bore specs.\u003c\/p\u003e\n\u003cp\u003eTypical use cases include DC motor gearboxes for wheeled robots, 90° axis drives in desktop CNC routers, servo-driven pan-tilt mechanisms, and custom reduction stages in 3D printer extruder assemblies. Long-tail applications such as \"small bevel gear set for robot arm\" and \"90 degree gear drive for stepper motor\" are well served across the full modulus range.\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 standard 90° intersecting shaft configurations. Verify bore diameter, keyway width, and shaft diameter against your motor spec before ordering. Pairs are sold as matched sets — pinion + ring gear included.\u003c\/div\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These Metal Motor Bevel Gears\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-list\"\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e \u003cstrong\u003e45# Medium-Carbon Steel Construction\u003c\/strong\u003e\n\u003cp\u003eMachined from 45# steel, these bevel gears deliver a reliable combination of surface hardness and core toughness — resisting wear under continuous motor load without becoming brittle.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e \u003cstrong\u003eWide Modulus Range: 1.5 \/ 2 \/ 2.5 \/ 3\u003c\/strong\u003e\n\u003cp\u003eFour modulus options let you match tooth strength to your torque requirement. Smaller modulus (1.5) suits compact, high-speed motor shafts; larger modulus (3) handles heavier loads and lower-speed drives.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚡\u003c\/span\u003e \u003cstrong\u003ePre-Matched 90° Gear Pairs\u003c\/strong\u003e\n\u003cp\u003eEach listing ships as a factory-matched pinion-and-ring pair, pre-verified for correct mesh at 90°. No hand-lapping or shimming required for standard shaft center distances.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e \u003cstrong\u003e1:2 and 1:3 Reduction Ratios Available\u003c\/strong\u003e\n\u003cp\u003eChoose a 1:2 ratio for moderate speed reduction or a 1:3 ratio for greater torque multiplication — both available within the same product family for easy drivetrain planning.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🛡️\u003c\/span\u003e \u003cstrong\u003eCorrosion-Resistant Finish\u003c\/strong\u003e\n\u003cp\u003eThe machined steel surfaces are treated to resist oxidation during storage and operation in typical indoor mechanical environments. For high-humidity or outdoor applications, additional lubrication is recommended.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🎯\u003c\/span\u003e \u003cstrong\u003eBroad Tooth Count Selection: 15T to 54T\u003c\/strong\u003e\n\u003cp\u003eWith tooth counts from 15T to 54T across the range, you can fine-tune pitch diameter and gear ratio to fit tight chassis envelopes or achieve specific output RPM targets in your motor drive design.\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 — Metal Bevel Gear Sets\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003e45# Medium-Carbon Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGear Type\u003c\/th\u003e\n\u003ctd\u003eStraight Bevel Gear (Miter \/ Reduction)\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\u003eAvailable Modulus\u003c\/th\u003e\n\u003ctd\u003e1.5 \/ 2 \/ 2.5 \/ 3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTooth Count (Pinion + Ring)\u003c\/th\u003e\n\u003ctd\u003e15+30T, 16+32T, 18+36T, 20+40T (1:2); 15+45T, 16+48T, 18+54T (1:3)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGear Ratio\u003c\/th\u003e\n\u003ctd\u003e1:2 or 1:3 (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePitch Diameter Range\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\u003eKeyway\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSurface Treatment\u003c\/th\u003e\n\u003ctd\u003eOxidation-resistant machined finish\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSold As\u003c\/th\u003e\n\u003ctd\u003eMatched pair (pinion + ring gear)\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\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 modulus for my motor application?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eModulus determines tooth size and load capacity. For small DC or stepper motors (typically under 50W) driving lightweight mechanisms, modulus 1.5 or 2 is usually sufficient. For higher-torque servo or gear-motor applications, modulus 2.5 or 3 provides greater tooth strength and longer service life. When in doubt, size up — a larger modulus gear in a slightly bigger envelope is more reliable than an undersized one running at its limit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between a 1:2 and 1:3 ratio bevel gear set?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eA 1:2 ratio means the output shaft turns at half the speed of the input shaft, doubling the torque (minus friction losses). A 1:3 ratio provides a greater speed reduction — the output turns at one-third the input speed — tripling the torque multiplication. Choose 1:2 for moderate reduction and 1:3 when you need significantly more output torque from a high-RPM motor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre these bevel gears compatible with standard motor shafts?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eCompatibility depends on bore diameter and keyway dimensions, which vary by modulus and tooth count. Please check the bore spec listed in the variant options against your motor shaft diameter before ordering. If your shaft diameter falls between standard bore sizes, a set-screw hub or shaft adapter may be required.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow strong are 45# steel bevel gears compared to brass or aluminum alternatives?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003e45# medium-carbon steel offers significantly higher tensile strength and wear resistance than brass or aluminum. Brass gears are quieter and corrosion-resistant but fatigue faster under cyclic load. Aluminum gears are lightweight but soft. Steel is the preferred choice for motor-driven applications where load cycles are high and dimensional stability matters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDo these gears require lubrication?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. For continuous-duty motor applications, apply a light gear grease (such as NLGI #2 lithium grease) to the tooth flanks before assembly. Re-lubricate periodically based on operating hours and load. For intermittent or low-speed use, a thin film of machine oil is sufficient. Proper lubrication extends gear life and reduces operating noise.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use a single gear from the pair, or must I use both together?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThese are sold and designed as factory-matched pairs. The pinion and ring gear are machined to mesh together at the correct center distance and tooth contact pattern. Mixing gears from different pairs — even of the same modulus — can result in uneven tooth contact, increased backlash, and accelerated wear. Always use the matched pair as supplied.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat surface finish do these gears have, and are they rust-proof?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe gears have a machined steel finish with a light oxidation-resistant treatment suitable for typical indoor mechanical environments. They are not fully rust-proof in high-humidity or wet conditions. For outdoor or high-moisture applications, apply a protective grease coating and consider housing the gear assembly in an enclosed gearbox to prevent corrosion.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your modulus and tooth count (model) above, then add to cart.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"HomeDIYer","offers":[{"title":"Bevel Gear \/ 1.5mod 18+36T(1:2)","offer_id":52439268393234,"sku":"GLFBJTTJGJXCD0045x1","price":61.01,"currency_code":"USD","in_stock":true},{"title":"Bevel Gear \/ 1.5mod 20+40T(1:2)","offer_id":52439268426002,"sku":"GLFBJTTJGJXCD0046x1","price":61.99,"currency_code":"USD","in_stock":true},{"title":"Bevel Gear \/ 2Mod 15+30T(1:2)","offer_id":52439268458770,"sku":"GLFBJTTJGJXCD0047x1","price":64.38,"currency_code":"USD","in_stock":true},{"title":"Bevel Gear \/ 2Mod 16+32T(1:2)","offer_id":52439268491538,"sku":"GLFBJTTJGJXCD0048x1","price":81.41,"currency_code":"USD","in_stock":true},{"title":"Bevel Gear \/ 2Mod 18+36T(1:2)","offer_id":52439268524306,"sku":"GLFBJTTJGJXCD0049x1","price":106.43,"currency_code":"USD","in_stock":true},{"title":"Bevel Gear \/ 2Mod 20+40T(1:2)","offer_id":52439268557074,"sku":"GLFBJTTJGJXCD0050x1","price":123.81,"currency_code":"USD","in_stock":true},{"title":"Bevel Gear \/ 2.5Mod 15+30T(1:2)","offer_id":52439268589842,"sku":"GLFBJTTJGJXCD0051x1","price":102.65,"currency_code":"USD","in_stock":true},{"title":"Bevel Gear \/ 2.5Mod 16+32T(1:2)","offer_id":52439268622610,"sku":"GLFBJTTJGJXCD0052x1","price":116.23,"currency_code":"USD","in_stock":true},{"title":"Bevel Gear \/ 2.5Mod 18+36T(1:2)","offer_id":52439268655378,"sku":"GLFBJTTJGJXCD0053x1","price":133.66,"currency_code":"USD","in_stock":true},{"title":"Bevel Gear \/ 2.5Mod 20+40T(1:2)","offer_id":52439268688146,"sku":"GLFBJTTJGJXCD0054x1","price":152.16,"currency_code":"USD","in_stock":true},{"title":"Bevel Gear \/ 3Mod 15+30T(1:2)","offer_id":52439268720914,"sku":"GLFBJTTJGJXCD0055x1","price":179.17,"currency_code":"USD","in_stock":true},{"title":"Bevel Gear \/ 3Mod 18+36T(1:2)","offer_id":52439268753682,"sku":"GLFBJTTJGJXCD0056x1","price":337.85,"currency_code":"USD","in_stock":true},{"title":"Bevel Gear \/ 3Mod 20+40T(1:2)","offer_id":52439268786450,"sku":"GLFBJTTJGJXCD0057x1","price":349.38,"currency_code":"USD","in_stock":true},{"title":"Bevel Gear \/ 2Mod 15+45T(1:3)","offer_id":52439268819218,"sku":"GLFBJTTJGJXCD0058x1","price":148.92,"currency_code":"USD","in_stock":true},{"title":"Bevel Gear \/ 2Mod 16+48T(1:3)","offer_id":52439268851986,"sku":"GLFBJTTJGJXCD0059x1","price":179.17,"currency_code":"USD","in_stock":true},{"title":"Bevel Gear \/ 2Mod 18+54T(1:3)","offer_id":52439268884754,"sku":"GLFBJTTJGJXCD0060x1","price":157.76,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Main-03_8aaf8641-c1b0-4ffc-a9be-7b817b0a772b.jpg?v=1782956019","url":"https:\/\/homediyer.com\/products\/1-2-1-3-metal-motor-bevel-gears-1-5-3-modulus-15-54tooth-90-pairing-45-steel","provider":"HomeDIYer","version":"1.0","type":"link"}