{"product_id":"nylon-module-2-bevel-gear-90-degree-1-2-ratio-20-40-tooth-12-25mm-bore-blue","title":"Nylon Module 2 Straight Bevel Gear 90° 1:2 Pairing 20\/40 Tooth 12-25mm Bore Blue","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eNylon Module 2 Bevel Gear — 90° 1:2 Ratio Drive for DIY Builders and Automation Projects\u003c\/h2\u003e\n\u003cp\u003eWhen a right-angle power transfer is the only option and metal gears are too loud, too heavy, or too corrosive for the job, engineers and makers reach for nylon bevel gears. These Module 2 straight bevel gears are designed for hobbyists, robotics builders, and light-industrial automation teams who need a reliable 90° 1:2 speed-reduction mesh without the noise or weight penalty of steel.\u003c\/p\u003e\n\u003cp\u003eEach set pairs a 20-tooth pinion with a 40-tooth gear, both machined from engineering-grade nylon (PA66 or equivalent) and finished in blue for easy identification. The gears are available with bore sizes ranging from 12 mm to 25 mm (approximately 0.47 in to 0.98 in), each paired with a matching keyway slot — from a 4 mm keyway on the 12 mm bore up to an 8 mm keyway on the 24–25 mm bore — for positive shaft locking without set-screw slip.\u003c\/p\u003e\n\u003cp\u003eTypical use cases include 3D printer Z-axis right-angle drives, CNC router auxiliary axes, conveyor corner-turn assemblies, and DIY go-kart or e-bike differential builds where a nylon module 2 bevel gear 90 degree drive reduces drivetrain noise and eliminates corrosion concerns in damp or outdoor environments.\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 Module 2 tooth profile — meshes with any standard Mod 2 bevel gear counterpart at 90°. Verify bore diameter and keyway dimensions match your shaft before ordering.\u003c\/div\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These Nylon Module 2 Bevel Gears\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-icon\"\u003e🔄 \u003cstrong\u003eTrue 90° 1:2 Ratio Mesh\u003c\/strong\u003e\n\u003cp\u003e20-tooth pinion drives a 40-tooth gear at exactly half the input speed, delivering a clean right-angle speed reduction in a compact envelope — no additional gearbox required.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-icon\"\u003e🔵 \u003cstrong\u003eEngineering-Grade Nylon Construction\u003c\/strong\u003e\n\u003cp\u003eMoulded from PA66-class nylon for a balance of tensile strength, dimensional stability, and self-lubricating surface properties that reduce wear without grease in light-load applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-icon\"\u003e🔑 \u003cstrong\u003eKeyway Bore for Positive Shaft Lock\u003c\/strong\u003e\n\u003cp\u003eEvery bore option includes a precision-cut keyway (4 mm, 5 mm, or 8 mm depending on bore size) so the gear transmits torque through the key rather than relying solely on friction or set screws.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-icon\"\u003e🔇 \u003cstrong\u003eLow-Noise, Low-Vibration Operation\u003c\/strong\u003e\n\u003cp\u003eNylon-on-nylon or nylon-on-steel meshing absorbs impact and dampens gear noise — ideal for indoor automation, desktop CNC, and robotics where acoustic performance matters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-icon\"\u003e🛡️ \u003cstrong\u003eCorrosion-Resistant in Damp Environments\u003c\/strong\u003e\n\u003cp\u003eUnlike steel bevel gears, nylon does not rust or oxidise, making these gears suitable for food-adjacent machinery, outdoor enclosures, and humid workshop conditions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-icon\"\u003e📦 \u003cstrong\u003eFlexible Pack Quantities\u003c\/strong\u003e\n\u003cp\u003eAvailable in 1, 2, 3, 4, or 5-piece packs so you can order exactly what your build requires — single replacement gears or full multi-axis sets — without overstocking.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ch2\u003e📐 Technical Specifications — Module 2 Nylon Bevel Gear\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eGear Module\u003c\/th\u003e\n\u003ctd\u003eModule 2 (Mod 2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMesh Angle\u003c\/th\u003e\n\u003ctd\u003e90°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRatio\u003c\/th\u003e\n\u003ctd\u003e1:2 (20T pinion : 40T gear)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTooth Count Options\u003c\/th\u003e\n\u003ctd\u003e20 Tooth \/ 40 Tooth\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Size Range\u003c\/th\u003e\n\u003ctd\u003e12 mm – 25 mm (0.47 in – 0.98 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eKeyway Size\u003c\/th\u003e\n\u003ctd\u003e4 mm (12 mm bore) \/ 5 mm (14–16 mm bore) \/ 6 mm (18–22 mm bore) \/ 8 mm (24–25 mm bore)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eEngineering Nylon (PA66-class)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eColour\u003c\/th\u003e\n\u003ctd\u003eBlue\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTooth Profile\u003c\/th\u003e\n\u003ctd\u003eStraight bevel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePack Quantity\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOuter Diameter (20T)\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOuter Diameter (40T)\u003c\/th\u003e\n\u003ctd\u003eSee variant options\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\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 between the 20-tooth and 40-tooth gear?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe 20-tooth gear is the pinion (driver) and the 40-tooth gear is the driven wheel. They are sold as a matched 1:2 ratio pair. If you need to replace only one gear in an existing set, select the tooth count that matches the gear you are replacing. For a complete new drive, order one of each or select a multi-piece pack that includes both.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhich bore size should I select for my shaft?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eMeasure your shaft diameter precisely with a calliper. Select the bore size that matches your shaft — for example, a 16 mm shaft requires the \"16mm + 5mm Keyway\" option. The keyway dimension is fixed per bore size, so also confirm your shaft has a matching keyway slot cut to the correct width and depth before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan these nylon bevel gears mesh with steel bevel gears?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. Module 2 is a standardised tooth profile, so these nylon gears will mesh correctly with any Module 2 steel or metal bevel gear of the same tooth count at 90°. In mixed-material pairings the nylon gear typically acts as the sacrificial wear component, which is often desirable to protect a more expensive metal shaft or housing.\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\u003eNylon has inherent self-lubricating properties and can run dry in light-load, low-speed applications. For continuous-duty or higher-load use, a light application of PTFE-based dry lubricant or white lithium grease on the tooth flanks will extend service life. Avoid petroleum-based oils that may swell or degrade nylon over time.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the maximum torque or load these gears can handle?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eExact torque ratings depend on operating speed, temperature, and lubrication. As a conservative guideline, Module 2 nylon bevel gears in this size range are typically suited for light-duty applications up to approximately 1–3 Nm at moderate speeds (under 500 RPM). For higher torque requirements, consider steel bevel gears. Contact us to confirm suitability for your specific application.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre these gears suitable for outdoor or humid environments?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. Nylon does not rust or corrode, making these gears a reliable choice for damp workshops, outdoor enclosures, and food-adjacent machinery where metal gears would require frequent maintenance. Note that prolonged exposure to standing water or UV radiation may gradually affect dimensional stability; a protective housing is recommended for long-term outdoor installations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I order just the pinion or just the wheel, or must I buy a pair?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eEach variant listing covers a specific tooth count (20T or 40T), bore size, and quantity. You can order either gear individually by selecting the corresponding Models option. If you need a complete matched set, add one 20-tooth variant and one 40-tooth variant with matching bore sizes to your cart, or use a multi-piece pack for the same bore size.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your Models, Bore Size, and Amount above, then add to cart.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"HomeDIYer","offers":[{"title":"Module 2【20 Tooth】 \/ 12mm + 4mm Keyway \/ 1 pcs","offer_id":52439351427346,"sku":"PENGJGJXCD2880x1","price":13.31,"currency_code":"USD","in_stock":true},{"title":"Module 2【20 Tooth】 \/ 14mm + 5mm Keyway \/ 1 pcs","offer_id":52439351460114,"sku":"PENGJGJXCD2881x1","price":13.31,"currency_code":"USD","in_stock":true},{"title":"Module 2【20 Tooth】 \/ 15mm + 5mm Keyway \/ 1 pcs","offer_id":52439351492882,"sku":"PENGJGJXCD2882x1","price":13.31,"currency_code":"USD","in_stock":true},{"title":"Module 2【20 Tooth】 \/ 16mm + 5mm Keyway \/ 1 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pcs","offer_id":52439353032978,"sku":"PENGJGJXCD2889x5","price":98.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture6of13_98d2353e-80f2-4f2e-a2f7-d881ecb1270f.jpg?v=1783392400","url":"https:\/\/homediyer.com\/products\/nylon-module-2-bevel-gear-90-degree-1-2-ratio-20-40-tooth-12-25mm-bore-blue","provider":"HomeDIYer","version":"1.0","type":"link"}