{"product_id":"module-1-bevel-gear-c45-steel-1-3-ratio-15-45-tooth-6-12mm-bore-hardened-black","title":"Module 1 Bevel Gear C45 Steel 1:3 Ratio 15-45 Tooth 6-12mm Bore Hardened Black","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eModule 1 Bevel Gear C45 Steel — Precision 1:3 Ratio Drive for DIY and Industrial Applications\u003c\/h2\u003e\n\u003cp\u003eWhen a right-angle power transmission fails mid-project, the culprit is almost always an undersized or poorly finished gear. Engineers, hobbyists, and machine builders who need a reliable 90° direction change without backlash or premature wear will find these Module 1 bevel gears a dependable solution. Available in a 1:3 ratio pairing (15-tooth pinion and 45-tooth wheel), they are suited for both light-duty DIY builds and repetitive industrial drive cycles.\u003c\/p\u003e\n\u003cp\u003eEach gear is machined from C45 medium-carbon steel and finished with a hardened black surface treatment for improved wear resistance and corrosion protection. The module is 1 (metric), with tooth counts of 15T (pinion) or 45T (wheel), and bore sizes ranging from 6 mm (0.24 in) to 12 mm (0.47 in). Outer diameter varies by tooth count: the 15T gear measures approximately 17 mm (0.67 in) and the 45T gear approximately 47 mm (1.85 in). Available in quantities of 1 to 5 pieces per order.\u003c\/p\u003e\n\u003cp\u003eTypical use cases include CNC router axis drives requiring a 1:3 speed reduction, 3D printer extruder gearbox assemblies needing compact right-angle transmission, and custom robotics or automation rigs where a hardened bevel gear set replaces worn plastic or cast components.\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 Module 1 (metric) gear systems. Pinion (15T) and wheel (45T) are sold separately — select both Models to complete a 1:3 ratio pair. Bore sizes 6 \/ 8 \/ 10 \/ 12 mm available; confirm shaft diameter before ordering.\u003c\/div\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These Module 1 Bevel Gears\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-list\"\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e \u003cstrong\u003eC45 Steel Construction\u003c\/strong\u003e\n\u003cp\u003eMachined from C45 medium-carbon steel for a balance of machinability and tensile strength, suitable for continuous rotational loads in drive assemblies.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⬛\u003c\/span\u003e \u003cstrong\u003eHardened Black Surface Finish\u003c\/strong\u003e\n\u003cp\u003eThe blackening treatment increases surface hardness and provides a degree of corrosion resistance, extending service life in workshop and light-industrial environments.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e \u003cstrong\u003eTrue 1:3 Ratio Pairing\u003c\/strong\u003e\n\u003cp\u003e15-tooth pinion paired with 45-tooth wheel delivers an exact 3:1 speed reduction (or 1:3 speed increase), enabling precise torque multiplication in right-angle drive configurations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🎯\u003c\/span\u003e \u003cstrong\u003eMultiple Bore Sizes\u003c\/strong\u003e\n\u003cp\u003eAvailable in 6 mm, 8 mm, 10 mm, and 12 mm bore diameters to fit a wide range of standard shaft sizes without custom machining.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e \u003cstrong\u003eFlexible Quantity Options\u003c\/strong\u003e\n\u003cp\u003eOrder 1 to 5 pieces per SKU — ideal for prototyping single units or stocking spares for multi-axis machines and production lines.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e \u003cstrong\u003e90° Right-Angle Transmission\u003c\/strong\u003e\n\u003cp\u003eBevel tooth geometry enables smooth power transfer between intersecting shafts at 90°, making these gears a compact alternative to worm gear or belt-and-pulley setups.\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 — Module 1 Bevel Gear\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eModule\u003c\/th\u003e\n\u003ctd\u003e1 (metric)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRatio\u003c\/th\u003e\n\u003ctd\u003e1:3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTooth Count\u003c\/th\u003e\n\u003ctd\u003e15T (pinion) \/ 45T (wheel)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eC45 medium-carbon steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSurface Treatment\u003c\/th\u003e\n\u003ctd\u003eHardened black finish\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Size\u003c\/th\u003e\n\u003ctd\u003e6 mm \/ 8 mm \/ 10 mm \/ 12 mm (See variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOuter Diameter (15T)\u003c\/th\u003e\n\u003ctd\u003eApprox. 17 mm (0.67 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOuter Diameter (45T)\u003c\/th\u003e\n\u003ctd\u003eApprox. 47 mm (1.85 in)\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\u003eShaft Angle\u003c\/th\u003e\n\u003ctd\u003e90°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eQuantity per Order\u003c\/th\u003e\n\u003ctd\u003e1 \/ 2 \/ 3 \/ 4 \/ 5 pcs (See 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\u003eDo I need to buy both the 15T and 45T gears to complete a 1:3 ratio pair?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. The 15-tooth pinion (Module 1【15 Tooth】) and the 45-tooth wheel (Module 1【45 Tooth】) are listed as separate variants. To achieve the 1:3 ratio drive, you need one of each. Make sure both share the same bore size, or plan to use a keyway or set-screw adapter if shaft diameters differ.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I choose the correct bore size for my shaft?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eMeasure your shaft diameter with a caliper before ordering. Available bore sizes are 6 mm, 8 mm, 10 mm, and 12 mm. The bore should match your shaft diameter exactly — a loose fit causes vibration and accelerated wear, while an oversized shaft will not insert. If your shaft falls between sizes, select the next larger bore and use a keyway or Loctite retaining compound.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the load capacity of these bevel gears?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eC45 steel has a tensile strength of approximately 600–800 MPa depending on heat treatment. These gears are suited for light-to-medium duty applications such as CNC machines, 3D printers, and small automation rigs. For heavy industrial loads exceeding continuous torque requirements of your application, consult a mechanical engineer to verify the gear's rated torque against your system's demand.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre these gears corrosion-resistant for outdoor or humid environments?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe hardened black surface treatment provides moderate corrosion resistance suitable for indoor workshop and light-industrial use. For outdoor, marine, or high-humidity environments, we recommend applying a thin coat of gear grease or anti-rust oil and re-applying periodically. For fully corrosion-resistant applications, consider stainless steel alternatives.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan these gears mesh with other Module 1 bevel gears from different brands?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes, provided the other gear also conforms to Module 1 metric standards with a matching 20° pressure angle and 90° shaft angle. Module is a standardized metric measurement, so gears from different manufacturers with the same module should mesh correctly. Always verify tooth count and pressure angle before mixing gear sets.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat lubrication should I use with these bevel gears?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eFor most applications, a medium-viscosity gear grease (NLGI Grade 1 or 2) applied to the tooth flanks before assembly is sufficient. For high-speed applications, a splash-lubricated oil bath may be more appropriate. Avoid dry running — even brief unlubricated operation accelerates tooth wear on steel bevel gears.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I decide between ordering 1 piece vs. a multi-piece quantity?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eIf you are prototyping or replacing a single failed gear, 1 pcs is the right choice. For multi-axis machines (e.g., a 3-axis CNC router), ordering 2–3 sets at once reduces downtime if a gear needs replacement mid-project. The per-piece cost decreases with higher quantities, making 4–5 pcs a cost-effective option for production runs or spare parts inventory.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your Model, 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 1【15 Tooth】 \/ 6mm \/ 1 pcs","offer_id":52439342448914,"sku":"PENGDZ00155x1","price":7.33,"currency_code":"USD","in_stock":true},{"title":"Module 1【15 Tooth】 \/ 8mm \/ 1 pcs","offer_id":52439342481682,"sku":"PENGDZ00156x1","price":7.33,"currency_code":"USD","in_stock":true},{"title":"Module 1【45 Tooth】 \/ 8mm \/ 1 pcs","offer_id":52439342514450,"sku":"PENGDZ00157x1","price":16.39,"currency_code":"USD","in_stock":true},{"title":"Module 1【45 Tooth】 \/ 10mm \/ 1 pcs","offer_id":52439342547218,"sku":"PENGDZ00158x1","price":16.39,"currency_code":"USD","in_stock":true},{"title":"Module 1【45 Tooth】 \/ 12mm \/ 1 pcs","offer_id":52439342579986,"sku":"PENGDZ00159x1","price":16.39,"currency_code":"USD","in_stock":true},{"title":"Module 1【15 Tooth】 \/ 6mm \/ 2 pcs","offer_id":52439342612754,"sku":"PENGDZ00155x2","price":12.36,"currency_code":"USD","in_stock":true},{"title":"Module 1【15 Tooth】 \/ 8mm \/ 2 pcs","offer_id":52439342645522,"sku":"PENGDZ00156x2","price":12.36,"currency_code":"USD","in_stock":true},{"title":"Module 1【45 Tooth】 \/ 8mm \/ 2 pcs","offer_id":52439342678290,"sku":"PENGDZ00157x2","price":31.48,"currency_code":"USD","in_stock":true},{"title":"Module 1【45 Tooth】 \/ 10mm \/ 2 pcs","offer_id":52439342711058,"sku":"PENGDZ00158x2","price":31.48,"currency_code":"USD","in_stock":true},{"title":"Module 1【45 Tooth】 \/ 12mm \/ 2 pcs","offer_id":52439342743826,"sku":"PENGDZ00159x2","price":31.48,"currency_code":"USD","in_stock":true},{"title":"Module 1【15 Tooth】 \/ 6mm \/ 3 pcs","offer_id":52439342776594,"sku":"PENGDZ00155x3","price":17.88,"currency_code":"USD","in_stock":true},{"title":"Module 1【15 Tooth】 \/ 8mm \/ 3 pcs","offer_id":52439342809362,"sku":"PENGDZ00156x3","price":17.88,"currency_code":"USD","in_stock":true},{"title":"Module 1【45 Tooth】 \/ 8mm \/ 3 pcs","offer_id":52439342842130,"sku":"PENGDZ00157x3","price":46.5,"currency_code":"USD","in_stock":true},{"title":"Module 1【45 Tooth】 \/ 10mm \/ 3 pcs","offer_id":52439342874898,"sku":"PENGDZ00158x3","price":46.5,"currency_code":"USD","in_stock":true},{"title":"Module 1【45 Tooth】 \/ 12mm \/ 3 pcs","offer_id":52439342907666,"sku":"PENGDZ00159x3","price":46.5,"currency_code":"USD","in_stock":true},{"title":"Module 1【15 Tooth】 \/ 6mm \/ 4 pcs","offer_id":52439342940434,"sku":"PENGDZ00155x4","price":23.38,"currency_code":"USD","in_stock":true},{"title":"Module 1【15 Tooth】 \/ 8mm \/ 4 pcs","offer_id":52439342973202,"sku":"PENGDZ00156x4","price":23.38,"currency_code":"USD","in_stock":true},{"title":"Module 1【45 Tooth】 \/ 8mm \/ 4 pcs","offer_id":52439343005970,"sku":"PENGDZ00157x4","price":61.59,"currency_code":"USD","in_stock":true},{"title":"Module 1【45 Tooth】 \/ 10mm \/ 4 pcs","offer_id":52439343038738,"sku":"PENGDZ00158x4","price":61.59,"currency_code":"USD","in_stock":true},{"title":"Module 1【45 Tooth】 \/ 12mm \/ 4 pcs","offer_id":52439343071506,"sku":"PENGDZ00159x4","price":61.59,"currency_code":"USD","in_stock":true},{"title":"Module 1【15 Tooth】 \/ 6mm \/ 5 pcs","offer_id":52439343104274,"sku":"PENGDZ00155x5","price":28.95,"currency_code":"USD","in_stock":true},{"title":"Module 1【15 Tooth】 \/ 8mm \/ 5 pcs","offer_id":52439343137042,"sku":"PENGDZ00156x5","price":28.95,"currency_code":"USD","in_stock":true},{"title":"Module 1【45 Tooth】 \/ 8mm \/ 5 pcs","offer_id":52439343169810,"sku":"PENGDZ00157x5","price":76.69,"currency_code":"USD","in_stock":true},{"title":"Module 1【45 Tooth】 \/ 10mm \/ 5 pcs","offer_id":52439343202578,"sku":"PENGDZ00158x5","price":76.69,"currency_code":"USD","in_stock":true},{"title":"Module 1【45 Tooth】 \/ 12mm \/ 5 pcs","offer_id":52439343235346,"sku":"PENGDZ00159x5","price":76.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture6of12_61fc7df0-da98-46fa-be8e-2e5067d22f31.jpg?v=1783388810","url":"https:\/\/homediyer.com\/products\/module-1-bevel-gear-c45-steel-1-3-ratio-15-45-tooth-6-12mm-bore-hardened-black","provider":"HomeDIYer","version":"1.0","type":"link"}