{"product_id":"plastic-nylon-bevel-gear-1-1-5-2-mod-15t-40t-90-degree-pairing","title":"1\/1.5\/2 Mod Bevel Gear 15T - 40T 90°1:2 Pairing Plastic Nylon Transmission Gear","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003ePlastic Nylon Bevel Gear — 90° Power Transmission for DIY Drives \u0026amp; Robotics\u003c\/h2\u003e\n\u003cp\u003eWhen a right-angle direction change is the bottleneck in your build, a mismatched or undersized bevel gear causes noise, backlash, and premature wear. These plastic nylon bevel gears are engineered for makers, robotics builders, and mechanical DIY enthusiasts who need a reliable 90° 1:2 transmission without the weight or cost of metal gearing.\u003c\/p\u003e\n\u003cp\u003eEach gear is machined from engineering-grade nylon, offering a self-lubricating surface and low operating noise. Available in three module sizes — Mod 1, Mod 1.5, and Mod 2 — with tooth counts ranging from 15 to 40 teeth. Bore diameters span 5 mm to 25 mm (~0.20\" to ~0.98\"), with select variants featuring a precision keyway slot for positive shaft locking. Gears are sold individually; pair a pinion (small gear) with a wheel (large gear) to achieve the 1:2 ratio.\u003c\/p\u003e\n\u003cp\u003eTypical use cases include DIY gearbox assemblies for CNC router axis drives, 3D printer extruder direction changes, RC vehicle differential builds, and educational robotics platforms requiring a compact right-angle nylon bevel gear set.\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 90° 1:2 pairing within the same module (Mod 1 pairs with Mod 1, Mod 1.5 with Mod 1.5, Mod 2 with Mod 2). Confirm 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 Plastic Nylon Bevel Gears\u003c\/h2\u003e\n\u003cul class=\"hdiy-list\"\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e \u003cstrong\u003eTrue 90° Right-Angle Mesh\u003c\/strong\u003e — Engineered for a precise 90-degree bevel engagement, enabling clean direction changes in compact drive trains without additional idler components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚖️\u003c\/span\u003e \u003cstrong\u003e1:2 Transmission Ratio\u003c\/strong\u003e — Pinion-to-wheel pairing delivers a fixed 1:2 speed reduction, ideal for torque multiplication in low-speed, moderate-load applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🧱\u003c\/span\u003e \u003cstrong\u003eEngineering-Grade Nylon Construction\u003c\/strong\u003e — Nylon offers inherent self-lubrication, corrosion resistance, and vibration damping — reducing maintenance intervals compared to uncoated metal gears in dry-run environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e \u003cstrong\u003eThree Module Sizes (Mod 1 \/ 1.5 \/ 2)\u003c\/strong\u003e — Choose the module that matches your existing gear train. Larger modules handle higher torque; smaller modules suit fine-pitch, low-load mechanisms.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e \u003cstrong\u003eWide Bore Range with Keyway Options\u003c\/strong\u003e — Bore sizes from 5 mm to 25 mm cover most standard shaft diameters. Keyway variants (4 mm, 5 mm, 6 mm, 8 mm) provide positive rotational locking without relying solely on set screws.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🎯\u003c\/span\u003e \u003cstrong\u003e15T to 40T Tooth Count Selection\u003c\/strong\u003e — Multiple tooth counts within each module allow fine-tuning of gear diameter and contact ratio to suit your specific load and space constraints.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ch2\u003e📐 Technical Specifications — Plastic Nylon Bevel Gear\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eEngineering-grade nylon (PA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eModule (Mod)\u003c\/th\u003e\n\u003ctd\u003e1 \/ 1.5 \/ 2 (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNumber of Teeth\u003c\/th\u003e\n\u003ctd\u003e15T \/ 18T \/ 20T \/ 30T \/ 36T \/ 40T (see variant options)\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\u003eMesh Angle\u003c\/th\u003e\n\u003ctd\u003e90°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTransmission Ratio\u003c\/th\u003e\n\u003ctd\u003e1:2 (pinion : wheel)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Diameter\u003c\/th\u003e\n\u003ctd\u003e5 mm – 25 mm \/ ~0.20\" – ~0.98\" (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eKeyway\u003c\/th\u003e\n\u003ctd\u003eAvailable on select bore sizes: 4 mm, 5 mm, 6 mm, 8 mm keyway\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePitch Diameter (Mod 1, 15T)\u003c\/th\u003e\n\u003ctd\u003e~15 mm \/ ~0.59\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePitch Diameter (Mod 2, 40T)\u003c\/th\u003e\n\u003ctd\u003e~80 mm \/ ~3.15\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSurface Finish\u003c\/th\u003e\n\u003ctd\u003eNatural nylon (off-white \/ beige)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eQuantity per Order\u003c\/th\u003e\n\u003ctd\u003e1 PCS (single gear; pair separately for 1:2 set)\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 select the correct module size for my build?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe module (Mod) must match between the pinion and wheel gear you are pairing. Mod 1 is suited for light-load, fine-pitch applications; Mod 1.5 balances size and torque capacity for most hobby and maker builds; Mod 2 is recommended when higher torque or larger shaft diameters are required. If you are replacing an existing gear, measure the pitch diameter and divide by the tooth count to determine the module.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDo I need to buy two gears to get the 1:2 ratio?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. Each listing sells one gear (1 PCS). To achieve the 1:2 transmission ratio, you need to pair a pinion (smaller tooth count, e.g. 15T or 20T) with a wheel (larger tooth count, e.g. 30T or 40T) of the same module. Both gears must be the same Mod for correct meshing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDo I need a keyway bore, or will a plain bore work?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eA plain bore relies on a set screw or press fit to secure the gear to the shaft, which is adequate for low-torque or intermittent-duty applications. If your application involves sustained torque, reversing loads, or high RPM, a keyway bore provides positive rotational locking and significantly reduces the risk of slippage. Select the keyway variant that matches your shaft's existing keyway dimensions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre nylon bevel gears strong enough for my application?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eEngineering-grade nylon (PA) offers a good strength-to-weight ratio and is suitable for moderate loads in dry or lightly lubricated environments. It is commonly used in robotics, 3D printers, CNC machines, and light automation. For heavy industrial loads, continuous high-torque duty, or elevated temperatures above ~80°C (176°F), metal gears would be more appropriate. If you are unsure, contact us with your load and speed requirements.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre these gears corrosion-resistant?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. Nylon is inherently resistant to moisture, mild chemicals, and oxidation, making these gears suitable for environments where metal gears would rust or corrode. They do not require external lubrication for standard operation, though a light application of dry PTFE lubricant can extend service life in high-cycle applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I confirm the bore size fits my shaft?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eMeasure your shaft diameter with a caliper. The bore diameter listed in the variant name (e.g. \"8 mm\") is the inner hole diameter of the gear. For keyway variants, also confirm the keyway width on your shaft matches the keyway listed (e.g. \"Keyway 5mm\"). If your shaft diameter falls between listed sizes, contact us before ordering — do not attempt to force-fit a gear onto an oversized shaft.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan these gears be used with metal gears of the same module?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eTechnically, a nylon gear of the same module and pressure angle will mesh with a metal gear. However, pairing nylon with metal is generally not recommended for sustained high-load use, as the harder metal teeth will accelerate wear on the nylon gear. For best longevity, pair nylon with nylon within the same module.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your Modul, Number of Teeth, and Bore \u0026amp; Amount above, then add to cart.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"HomeDIYer","offers":[{"title":"1 Modul \/ 15 Teeth \/ 5 mm \u0026 1 PCS","offer_id":52439321248018,"sku":"GYJLTJGJXCD2847x1","price":13.57,"currency_code":"USD","in_stock":true},{"title":"1 Modul \/ 15 Teeth \/ 6 mm \u0026 1 PCS","offer_id":52439321280786,"sku":"GYJLTJGJXCD2848x1","price":14.82,"currency_code":"USD","in_stock":true},{"title":"1 Modul \/ 30 Teeth \/ 8 mm \u0026 1 PCS","offer_id":52439321313554,"sku":"GYJLTJGJXCD2849x1","price":16.84,"currency_code":"USD","in_stock":true},{"title":"1 Modul \/ 30 Teeth \/ 10 mm \u0026 1 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