{"product_id":"carbon-steel-helical-pinion-gear-0-5m-14t-2-9mm-bore","title":"Carbon Steel Pinion Gear Helical Gears Wheel 0.5M 14 Teeth 2.9mm Bore Bevel Gear","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eCarbon Steel Helical Pinion Gear — Smooth, Low-Noise Power Transmission for Precision DIY Builds\u003c\/h2\u003e\n\u003cp\u003eWhen a noisy, imprecise gear train is holding back your project — whether it's a robotic arm, a motorized camera slider, or a compact automation mechanism — the right pinion gear makes all the difference. This carbon steel helical pinion gear is designed for makers, engineers, and hobbyists who need reliable torque transfer in tight spaces without the rattle and backlash of lower-grade components.\u003c\/p\u003e\n\u003cp\u003eEach gear is machined from carbon steel and features a helical tooth profile at 0.5 module (M0.5) with 14 teeth and a 2.9mm (approximately 0.114 in) bore diameter. The overall gear width is typically 5–8mm (0.20–0.31 in), making it well-suited for compact drive trains. Available in packs of 1, 5, or 10 pieces to match your project scale.\u003c\/p\u003e\n\u003cp\u003eTypical applications include DIY robotics and servo-driven mechanisms, RC vehicle gearboxes requiring low-noise helical mesh, compact stepper motor drive stages, and small-scale automation or 3D printer extruder assemblies — all scenarios where a helical gear's gradual tooth engagement reduces vibration and extends component life compared to straight-cut spur gears.\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 to mesh with other 0.5 module (M0.5) gears. Verify bore diameter (2.9mm) matches your shaft before ordering. Pairs with M0.5 rack, spur, or helical gears of the same module.\u003c\/div\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These Carbon Steel Helical Pinion Gears\u003c\/h2\u003e\n\u003cul class=\"hdiy-list\"\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e \u003cstrong\u003eCarbon Steel Construction\u003c\/strong\u003e — Offers a strong strength-to-weight ratio suitable for moderate-load drive applications, with better wear resistance than plastic alternatives.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🌀\u003c\/span\u003e \u003cstrong\u003eHelical Tooth Profile\u003c\/strong\u003e — Gradual tooth engagement reduces impact noise and vibration compared to straight spur gears, resulting in smoother operation at higher RPMs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e \u003cstrong\u003ePrecise 0.5 Module Specification\u003c\/strong\u003e — Standardized M0.5 tooth geometry ensures accurate meshing with any compatible M0.5 gear, rack, or pinion in your drivetrain.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🕳️\u003c\/span\u003e \u003cstrong\u003e2.9mm Bore Diameter\u003c\/strong\u003e — Sized to fit common small-diameter motor and servo shafts used in robotics, RC, and automation builds. Confirm shaft OD before assembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e \u003cstrong\u003eFlexible Pack Quantities\u003c\/strong\u003e — Available in 1, 5, or 10-piece packs so you can order exactly what your build requires — from a single replacement to a full project batch.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚡\u003c\/span\u003e \u003cstrong\u003e14-Tooth Pinion Configuration\u003c\/strong\u003e — A 14-tooth count provides a useful gear ratio when paired with larger driven gears, enabling speed reduction or torque multiplication in compact gearbox designs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ch2\u003e📐 Technical Specifications — Helical Pinion Gear\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eModule\u003c\/th\u003e\n\u003ctd\u003e0.5M\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNumber of Teeth\u003c\/th\u003e\n\u003ctd\u003e14T\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Diameter\u003c\/th\u003e\n\u003ctd\u003e2.9mm (~0.114 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGear Width\u003c\/th\u003e\n\u003ctd\u003eTypically 5–8mm (0.20–0.31 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePitch Diameter\u003c\/th\u003e\n\u003ctd\u003e7mm (0.5M × 14T)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTooth Profile\u003c\/th\u003e\n\u003ctd\u003eHelical\u003c\/td\u003e\n\u003c\/tr\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\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePacking Quantity\u003c\/th\u003e\n\u003ctd\u003e1pcs \/ 5pcs \/ 10pcs (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCompatible Module\u003c\/th\u003e\n\u003ctd\u003eM0.5 gear systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePressure Angle\u003c\/th\u003e\n\u003ctd\u003eContact us to confirm\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\u003eWhat does \"0.5 module\" mean and how do I know if it's compatible with my existing gears?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eModule (M) is the standardized unit that defines gear tooth size. M0.5 means the pitch diameter divided by the number of teeth equals 0.5mm. For two gears to mesh correctly, they must share the same module. Check the module specification on your existing gear or motor pinion — if it reads M0.5 or 0.5M, this gear will mesh with it.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhy choose a helical gear over a straight spur gear for my project?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eHelical gears have teeth cut at an angle to the gear axis, so multiple teeth engage simultaneously rather than one at a time. This distributes load more evenly, reduces impact noise, and produces smoother rotation — especially at higher speeds. If your application is noise-sensitive (e.g., a camera slider or indoor robot), helical gears are a meaningful upgrade over spur gears of the same module.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWill a 2.9mm bore fit my motor shaft?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe bore is 2.9mm, which fits shafts with an outer diameter of approximately 2.9mm. Many small DC motors, micro gear motors, and stepper motor output shafts in the 3mm class may require light fitting or a set screw for secure attachment. Measure your shaft OD with calipers before ordering. If your shaft is slightly larger (e.g., 3.0mm), a light press fit or reaming may be needed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs carbon steel suitable for outdoor or humid environments?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eCarbon steel offers good mechanical strength but has limited corrosion resistance compared to stainless steel. For outdoor or high-humidity applications, we recommend applying a light machine oil or grease to the gear teeth and bore after installation. For fully corrosion-resistant builds, consider stainless steel alternatives. For indoor robotics, automation, and RC applications, carbon steel performs reliably with minimal maintenance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I select the right pack quantity for my project?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eIf you're building a single mechanism or replacing one worn gear, the 1-piece pack is sufficient. For projects with multiple gear stages or if you want spares on hand, the 5-piece pack offers better value per unit. The 10-piece pack is ideal for batch builds, classroom projects, or production prototypes where you need consistent parts across multiple assemblies.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat gear ratio can I achieve by pairing this 14-tooth pinion with a larger gear?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eGear ratio is calculated as the number of teeth on the driven gear divided by the number of teeth on the driving pinion. With this 14-tooth pinion driving a 28-tooth gear, you get a 2:1 reduction (half the speed, double the torque). Pairing with a 42-tooth gear gives 3:1, and so on. All mating gears must be M0.5 module to mesh correctly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use this gear in a 3D printer extruder or CNC machine?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes — M0.5 helical pinion gears are commonly used in compact extruder drive mechanisms and small CNC axis drives. Verify that your existing gear train uses M0.5 module components and that the 2.9mm bore matches your motor shaft. For high-cycle or high-torque CNC applications, ensure adequate lubrication to extend service life.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your Size and Packing Qty above, then add to cart.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"HomeDIYer","offers":[{"title":"0.5M×14T×2.9MM \/ 1pcs","offer_id":52439320592658,"sku":"LFLJSCS01779x1","price":4.46,"currency_code":"USD","in_stock":true},{"title":"0.5M×14T×2.9MM \/ 5pcs","offer_id":52439320625426,"sku":"LFLJSCS01779x5","price":15.72,"currency_code":"USD","in_stock":true},{"title":"0.5M×14T×2.9MM \/ 10pcs","offer_id":52439320658194,"sku":"LFLJSCS01779x10","price":30.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture2of5_81bfeaa0-0993-4bd7-8d80-97be1cc3ad09.jpg?v=1783348774","url":"https:\/\/homediyer.com\/products\/carbon-steel-helical-pinion-gear-0-5m-14t-2-9mm-bore","provider":"HomeDIYer","version":"1.0","type":"link"}