{"product_id":"nylon-bevel-gear-1-mod-1-2-pairing-15t-40t","title":"15M-40T Nylon Umbrella Tooth Bevel Gear Helical Motor Gear 1 Mod 1:2 Pairing","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eNylon Bevel Gear 1 Mod 1:2 Pairing — Quiet Power Transmission for CNC \u0026amp; Robotics\u003c\/h2\u003e\n\u003cp\u003eWhen your motion-control build demands smooth, low-noise 90° power transmission without the weight penalty of metal, most off-the-shelf gears either strip under load or generate disruptive vibration. Engineers, makers, and automation integrators working on CNC routers, robotic arms, and light-duty drive systems need a bevel gear pair that delivers reliable torque transfer while staying corrosion-resistant and easy to source in matched sets. These Module 1 nylon bevel gear pairs are designed exactly for that application.\u003c\/p\u003e\n\u003cp\u003eEach listing covers a matched 1:2 ratio bevel gear pair machined from engineering-grade nylon (PA66-class). The umbrella-tooth (straight bevel) profile is cut to Module 1 (1 Mod) standard, with pinion tooth counts of 15T, 20T, 30T, or 40T paired at a 1:2 ratio. Bore options range from 5 mm (0.20 in) to 12 mm (0.47 in) to suit common motor and shaft diameters. Overall gear diameter varies by tooth count, typically spanning 15 mm–40 mm (0.59 in–1.57 in) across the range.\u003c\/p\u003e\n\u003cp\u003eTypical use cases include: \u003cstrong\u003eCNC axis drives\u003c\/strong\u003e requiring 90° direction change with minimal backlash; \u003cstrong\u003edesktop robotic joint assemblies\u003c\/strong\u003e where weight and noise reduction are critical; and \u003cstrong\u003elight automation conveyor systems\u003c\/strong\u003e needing corrosion-resistant power transmission in humid or chemically active environments. Long-tail applications also include 3D printer extruder gearboxes, RC vehicle differentials, and educational robotics kits.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003e⚙️\u003c\/span\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Module 1 (1 Mod) standard — pairs with any M1 bevel gear of matching tooth count and 90° shaft angle. Bore sizes 5 \/ 6 \/ 8 \/ 10 \/ 12 mm. Verify shaft diameter and keyway requirements before ordering.\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These Nylon Bevel Gears\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-list\"\u003e\n\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔇\u003c\/span\u003e\n\u003cstrong\u003eLow-Noise Nylon Construction\u003c\/strong\u003e\n\u003cp\u003eEngineering-grade nylon (PA66-class) dampens vibration and reduces gear mesh noise compared to metal alternatives — ideal for desktop CNC machines, robotic arms, and any build where acoustic performance matters.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚖️\u003c\/span\u003e\n\u003cstrong\u003eLightweight for Weight-Sensitive Builds\u003c\/strong\u003e\n\u003cp\u003eNylon's low density (approximately 1.14 g\/cm³) keeps rotating mass minimal, reducing inertia in servo-driven axes and improving dynamic response in motion-control applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🛡️\u003c\/span\u003e\n\u003cstrong\u003eCorrosion \u0026amp; Chemical Resistance\u003c\/strong\u003e\n\u003cp\u003eUnlike steel or cast-iron gears, nylon resists moisture, mild acids, and lubricant degradation — making these gears suitable for humid workshops, food-adjacent automation, and environments where rust is a concern.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\n\u003cstrong\u003eModule 1 Standard — Matched 1:2 Ratio Pairs\u003c\/strong\u003e\n\u003cp\u003eSupplied as a pre-matched 1:2 ratio bevel pair (e.g., 15T driver + 30T driven), eliminating the guesswork of sourcing compatible mates. Module 1 pitch ensures interchangeability with standard M1 gear tooling and mating components.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\n\u003cstrong\u003eMultiple Bore Sizes — 5 mm to 12 mm\u003c\/strong\u003e\n\u003cp\u003eAvailable with bore diameters of 5 mm, 6 mm, 8 mm, 10 mm, and 12 mm to fit common stepper motor shafts, servo output shafts, and standard metric round stock without custom machining.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e\n\u003cstrong\u003e90° Shaft Angle Power Transmission\u003c\/strong\u003e\n\u003cp\u003eUmbrella-tooth (straight bevel) geometry delivers efficient torque transfer at a 90° shaft intersection — the standard configuration for CNC axis changes, differential drives, and right-angle gearbox assemblies.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003e📐 Technical Specifications — Nylon Bevel Gear\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eEngineering-grade nylon (PA66-class)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGear Type\u003c\/th\u003e\n\u003ctd\u003eStraight bevel gear (umbrella tooth)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eModule\u003c\/th\u003e\n\u003ctd\u003e1 (1 Mod)\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\u003eRatio\u003c\/th\u003e\n\u003ctd\u003e1:2 (matched pair)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTooth Count Options\u003c\/th\u003e\n\u003ctd\u003e15T, 20T, 30T, 40T (pinion \/ driver gear)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Diameter\u003c\/th\u003e\n\u003ctd\u003e5 mm \/ 6 mm \/ 8 mm \/ 10 mm \/ 12 mm\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 nylon (uncoated)\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\u003ctr\u003e\n\u003cth\u003ePackage Contents\u003c\/th\u003e\n\u003ctd\u003e1 matched bevel gear pair (Pack of 1)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-faq\"\u003e\n\u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eHow do I choose the right tooth count for my application?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThe tooth count determines the gear ratio within the 1:2 pairing. All options in this listing maintain a 1:2 speed reduction ratio — the difference between 15T, 20T, 30T, and 40T is the physical size of the gear pair. Larger tooth counts produce larger-diameter gears capable of transmitting more torque. Choose based on the available space in your assembly and the torque load your application requires.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\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\u003cp\u003eMatch the bore diameter to your motor or shaft OD. Common stepper motor shafts are 5 mm or 6.35 mm (1\/4 in); NEMA 23 steppers typically use 6.35 mm or 8 mm shafts; servo motors often use 8 mm, 10 mm, or 12 mm shafts. If your shaft diameter falls between bore sizes, a set-screw hub or shaft adapter is recommended. Select the bore that matches your shaft OD exactly — do not select an oversized bore without an adapter.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eAre these gears strong enough for my CNC or robotics project?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThese nylon bevel gears are suited for light-to-medium duty applications such as desktop CNC routers, 3D printer drives, small robotic joints, and educational automation rigs. Nylon has a tensile strength of approximately 70–85 MPa and performs well under moderate, continuous loads. For heavy industrial machinery, high-torque servo drives, or applications with significant shock loading, metal bevel gears are recommended.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eDo nylon gears require lubrication?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eNylon is self-lubricating to a degree due to its low surface friction coefficient, making it suitable for dry-running applications. However, for extended service life under continuous load, a light application of PTFE-based dry lubricant or white lithium grease at the gear mesh is recommended. Avoid petroleum-based oils that may degrade nylon over time.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWill these gears corrode or degrade in humid environments?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eNylon (PA66-class) offers excellent resistance to moisture, mild acids, and common workshop chemicals. Unlike steel gears, these will not rust or corrode in humid conditions. Note that prolonged immersion in water can cause slight dimensional swelling in nylon; for fully submerged applications, verify dimensional tolerances after moisture absorption or consider acetal (POM) alternatives.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eAre these sold as a pair or as individual gears?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eEach order (Pack of 1) includes one matched 1:2 ratio bevel gear pair — both the driver (pinion) and the driven gear are included. The gears are pre-matched to the correct Module 1 tooth profile and ratio, so no additional mate sourcing is required. Both gears in the pair share the same bore diameter as selected.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eCan I use these with imperial shaft sizes?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThe bore sizes listed (5 mm, 6 mm, 8 mm, 10 mm, 12 mm) are metric. Common imperial shaft sizes and their metric equivalents: 1\/4 in ≈ 6.35 mm (closest bore: 6 mm with light reaming, or use a 6.35 mm adapter), 5\/16 in ≈ 7.94 mm (closest bore: 8 mm), 3\/8 in ≈ 9.53 mm (closest bore: 10 mm). A shaft-to-bore adapter or set-screw collar is recommended when the imperial shaft does not match a listed bore exactly.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-cta\"\u003e\n🛒 Select your Bevel Model and Bore size above, then add to cart.\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I choose the right tooth count for my application?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The tooth count determines the physical size of the gear pair. All options maintain a 1:2 speed reduction ratio. Larger tooth counts produce larger-diameter gears capable of transmitting more torque. Choose based on available space and torque load requirements.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What bore size should I select for my motor shaft?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Match the bore diameter to your motor or shaft OD. Common stepper motor shafts are 5 mm or 6.35 mm; NEMA 23 steppers typically use 6.35 mm or 8 mm; servo motors often use 8 mm, 10 mm, or 12 mm shafts. Use a shaft adapter if your shaft falls between bore sizes.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Are these gears strong enough for my CNC or robotics project?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"These nylon bevel gears are suited for light-to-medium duty applications such as desktop CNC routers, 3D printer drives, small robotic joints, and educational automation rigs. For heavy industrial machinery or high-torque applications, metal bevel gears are recommended.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Do nylon gears require lubrication?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Nylon is self-lubricating for dry-running applications. For extended service life under continuous load, a light application of PTFE-based dry lubricant or white lithium grease at the gear mesh is recommended. Avoid petroleum-based oils that may degrade nylon.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Will these gears corrode or degrade in humid environments?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Nylon (PA66-class) offers excellent resistance to moisture, mild acids, and common workshop chemicals and will not rust. Prolonged immersion may cause slight dimensional swelling; verify tolerances for fully submerged applications.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Are these sold as a pair or as individual gears?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Each Pack of 1 includes one matched 1:2 ratio bevel gear pair — both the driver (pinion) and the driven gear are included, pre-matched to Module 1 tooth profile.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I use these with imperial shaft sizes?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Bore sizes are metric (5–12 mm). Common imperial equivalents: 1\/4 in ≈ 6.35 mm, 5\/16 in ≈ 7.94 mm, 3\/8 in ≈ 9.53 mm. A shaft adapter or set-screw collar is recommended when the imperial shaft does not match a listed bore exactly.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"HomeDIYer","offers":[{"title":"1M 15T \/ 5mm \/ Pack of 1","offer_id":52439886922002,"sku":"FASJGJXCD2847x1","price":26.74,"currency_code":"USD","in_stock":true},{"title":"1M 15T \/ 6mm \/ Pack of 1","offer_id":52439886954770,"sku":"FASJGJXCD2848x1","price":26.74,"currency_code":"USD","in_stock":true},{"title":"1M 30T \/ 8mm \/ Pack of 1","offer_id":52439886987538,"sku":"FASJGJXCD2849x1","price":30.74,"currency_code":"USD","in_stock":true},{"title":"1M 30T \/ 10mm \/ Pack of 1","offer_id":52439887020306,"sku":"FASJGJXCD2850x1","price":30.74,"currency_code":"USD","in_stock":true},{"title":"1M 20T \/ 6mm \/ Pack of 1","offer_id":52439887053074,"sku":"FASJGJXCD2851x1","price":26.74,"currency_code":"USD","in_stock":true},{"title":"1M 20T \/ 8mm \/ Pack of 1","offer_id":52439887085842,"sku":"FASJGJXCD2852x1","price":26.74,"currency_code":"USD","in_stock":true},{"title":"1M 40T \/ 8mm \/ Pack of 1","offer_id":52439887118610,"sku":"FASJGJXCD2853x1","price":30.74,"currency_code":"USD","in_stock":true},{"title":"1M 40T \/ 10mm \/ Pack of 1","offer_id":52439887151378,"sku":"FASJGJXCD2854x1","price":30.74,"currency_code":"USD","in_stock":true},{"title":"1M 40T \/ 12mm \/ Pack of 1","offer_id":52439887184146,"sku":"FASJGJXCD2855x1","price":30.74,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture1of6_097f0110-b4a8-4175-8a21-13eb4328a890.jpg?v=1783437807","url":"https:\/\/homediyer.com\/products\/nylon-bevel-gear-1-mod-1-2-pairing-15t-40t","provider":"HomeDIYer","version":"1.0","type":"link"}