{"product_id":"mod-2-bevel-gear-c45-steel-1-3-ratio-15-45-tooth-10mm-24mm-bore-hardened-black","title":"Mod 2 Bevel Gear C45 Steel 1:3 Ratio 15 | 45 Tooth 10mm-24mm Bore Hardened Black","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eMod 2 Bevel Gear C45 Steel — Reliable 1:3 Right-Angle Power Transmission\u003c\/h2\u003e\n\u003cp\u003eWhen a shaft direction change is non-negotiable and slippage is not an option, engineers and serious DIYers reach for a properly rated bevel gear set. This Mod 2 bevel gear pair is designed for builders who need a dependable 1:3 speed-reduction or torque-multiplication drive in a compact right-angle configuration — without the guesswork of undersized or poorly finished gears.\u003c\/p\u003e\n\u003cp\u003eEach gear is machined from C45 medium-carbon steel and finished with a hardened black oxide coating for corrosion resistance and surface durability. The set consists of a 15-tooth pinion gear and a 45-tooth wheel gear, both cut to Module 2 (Mod 2) standard. Bore sizes range from 10 mm (0.39 in) up to 25 mm (0.98 in), with keyway options available from 4 mm to 8 mm depending on bore diameter — select your exact combination from the variant options above.\u003c\/p\u003e\n\u003cp\u003eTypical use cases include right-angle gearbox assemblies for CNC router Z-axis drives, custom lathe or milling attachments requiring 1:3 reduction, agricultural equipment PTO adapters, and hobbyist robotics or automation rigs where a bevel gear pair for right-angle torque transfer is required. The hardened black finish also makes these gears a practical choice for open-drive applications where light corrosion protection matters.\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 (Mod 2) standard. Mates with any Mod 2 bevel gear of matching tooth count and pressure angle (typically 20°). Verify bore diameter and keyway dimensions against your shaft spec before ordering.\u003c\/div\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These Mod 2 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, toughness, and load-bearing strength — suitable for moderate-to-high torque right-angle drives.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚫\u003c\/span\u003e \u003cstrong\u003eHardened Black Oxide Finish\u003c\/strong\u003e\n\u003cp\u003eSurface-hardened with a black oxide treatment that reduces friction, resists light corrosion, and extends service life in open or semi-enclosed drive environments.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e \u003cstrong\u003e1:3 Gear Ratio (15T Pinion \/ 45T Wheel)\u003c\/strong\u003e\n\u003cp\u003eDelivers a precise 1:3 speed reduction or 3:1 torque multiplication — ideal for applications where the input shaft spins faster than the output shaft needs to.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔑\u003c\/span\u003e \u003cstrong\u003eMultiple Bore \u0026amp; Keyway Options\u003c\/strong\u003e\n\u003cp\u003eBore sizes from 10 mm to 25 mm, with keyway slots (4 mm, 5 mm, 6 mm, or 8 mm) available on larger bores for positive shaft engagement and zero rotational slip.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e \u003cstrong\u003eAvailable in 1 pcs or 2 pcs Sets\u003c\/strong\u003e\n\u003cp\u003eOrder a single gear for replacement or a matched pair for a complete bevel gear drive assembly — both options available per variant selection.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🏭\u003c\/span\u003e \u003cstrong\u003eModule 2 Standard Tooth Profile\u003c\/strong\u003e\n\u003cp\u003eCut to Mod 2 standard for interchangeability with other Mod 2 bevel gears. Consistent tooth geometry ensures smooth mesh and predictable load distribution across the gear face.\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 — Mod 2 Bevel Gear Set\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eModule\u003c\/th\u003e\n\u003ctd\u003e2 (Mod 2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGear Ratio\u003c\/th\u003e\n\u003ctd\u003e1:3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePinion Tooth Count\u003c\/th\u003e\n\u003ctd\u003e15 Tooth\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWheel Tooth Count\u003c\/th\u003e\n\u003ctd\u003e45 Tooth\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 Oxide\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\u003eBore Diameter\u003c\/th\u003e\n\u003ctd\u003eSee variant options (10 mm – 25 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eKeyway\u003c\/th\u003e\n\u003ctd\u003eSee variant options (4 mm \/ 5 mm \/ 6 mm \/ 8 mm, bore-dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDrive Angle\u003c\/th\u003e\n\u003ctd\u003e90° (right-angle bevel)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAvailable Quantity\u003c\/th\u003e\n\u003ctd\u003e1 pcs or 2 pcs (see variant options)\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 choose between the 15-tooth and 45-tooth gear?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThis listing includes both gears as a matched 1:3 ratio set. The 15-tooth gear is the pinion (input\/driver) and the 45-tooth gear is the wheel (output\/driven). If you need only one for replacement, select the appropriate model from the variant dropdown. For a complete right-angle drive assembly, order the 2-pcs option to receive both gears.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat bore size should I select?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eMeasure your shaft diameter precisely with a caliper. Select the bore size that matches your shaft — a bore that is too large will cause runout and vibration. For shafts requiring positive locking, choose a bore + keyway variant (e.g., 14mm + 5mm Keyway) and use a matching key and set screw for a secure fit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre these gears strong enough for my application?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eC45 steel bevel gears are rated for moderate-to-high torque applications in machinery, automation, and industrial equipment. For exact load ratings, calculate based on the Mod 2 tooth geometry and your operating RPM. If your application involves shock loads or continuous high-speed operation, consider adding lubrication and an enclosed housing for best service life.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDo these gears resist rust and corrosion?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe hardened black oxide finish provides light corrosion resistance suitable for indoor or semi-protected environments. For outdoor or high-humidity applications, periodic lubrication with a gear grease or oil is recommended to maintain the surface and extend gear life.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWill these mesh with other Mod 2 bevel gears I already have?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes — as long as the mating gear is also Module 2 with a matching pressure angle (20°) and compatible tooth count for your desired ratio. Module 2 is a standardized tooth profile, so these gears are interchangeable with other Mod 2 bevel gears from any manufacturer following the same standard.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use these gears without a keyway?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. Bore-only variants (e.g., 10mm, 12mm, 14mm, 15mm) are available for applications where a set screw or interference fit is used instead of a key. If your shaft has a keyway machined in, select the matching bore + keyway variant for a positive, slip-free connection.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between ordering 1 pcs vs 2 pcs?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eSelecting \"1 pcs\" gives you a single gear of the model you choose (either the 15T pinion or the 45T wheel). Selecting \"2 pcs\" gives you two gears of the same model — useful if you need spares or are building a symmetric drive with two identical stages. For a complete mating pair (one pinion + one wheel), add both models to your cart individually, or contact us to confirm bundle availability.\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 2【15 Tooth】 \/ 10mm \/ 1 pcs","offer_id":52439343956242,"sku":"PENGDZ00167x1","price":10.87,"currency_code":"USD","in_stock":true},{"title":"Module 2【15 Tooth】 \/ 12mm \/ 1 pcs","offer_id":52439343989010,"sku":"PENGDZ00168x1","price":10.87,"currency_code":"USD","in_stock":true},{"title":"Module 2【15 Tooth】 \/ 12mm + 4mm Keyway \/ 1 pcs","offer_id":52439344021778,"sku":"PENGDZ00169x1","price":10.87,"currency_code":"USD","in_stock":true},{"title":"Module 2【15 Tooth】 \/ 14mm \/ 1 pcs","offer_id":52439344054546,"sku":"PENGDZ00170x1","price":10.87,"currency_code":"USD","in_stock":true},{"title":"Module 2【15 Tooth】 \/ 15mm \/ 1 pcs","offer_id":52439344087314,"sku":"PENGDZ00171x1","price":10.87,"currency_code":"USD","in_stock":true},{"title":"Module 2【45 Tooth】 \/ 14mm + 5mm Keyway \/ 1 pcs","offer_id":52439344120082,"sku":"PENGDZ00172x1","price":73.15,"currency_code":"USD","in_stock":true},{"title":"Module 2【45 Tooth】 \/ 15mm + 5mm Keyway \/ 1 pcs","offer_id":52439344152850,"sku":"PENGDZ00173x1","price":73.15,"currency_code":"USD","in_stock":true},{"title":"Module 2【45 Tooth】 \/ 16mm + 5mm Keyway \/ 1 pcs","offer_id":52439344185618,"sku":"PENGDZ00174x1","price":73.15,"currency_code":"USD","in_stock":true},{"title":"Module 2【45 Tooth】 \/ 18mm + 6mm Keyway \/ 1 pcs","offer_id":52439344218386,"sku":"PENGDZ00175x1","price":73.15,"currency_code":"USD","in_stock":true},{"title":"Module 2【45 Tooth】 \/ 20mm + 6mm Keyway \/ 1 pcs","offer_id":52439344251154,"sku":"PENGDZ00176x1","price":73.15,"currency_code":"USD","in_stock":true},{"title":"Module 2【45 Tooth】 \/ 22mm + 6mm Keyway \/ 1 pcs","offer_id":52439344283922,"sku":"PENGDZ00177x1","price":73.15,"currency_code":"USD","in_stock":true},{"title":"Module 2【45 Tooth】 \/ 24mm + 8mm Keyway \/ 1 pcs","offer_id":52439344316690,"sku":"PENGDZ00178x1","price":73.15,"currency_code":"USD","in_stock":true},{"title":"Module 2【45 Tooth】 \/ 25mm + 8mm Keyway \/ 1 pcs","offer_id":52439344349458,"sku":"PENGDZ00179x1","price":73.15,"currency_code":"USD","in_stock":true},{"title":"Module 2【15 Tooth】 \/ 10mm \/ 2 pcs","offer_id":52439344382226,"sku":"PENGDZ00167x2","price":20.39,"currency_code":"USD","in_stock":true},{"title":"Module 2【15 Tooth】 \/ 12mm \/ 2 pcs","offer_id":52439344414994,"sku":"PENGDZ00168x2","price":20.39,"currency_code":"USD","in_stock":true},{"title":"Module 2【15 Tooth】 \/ 12mm + 4mm Keyway \/ 2 pcs","offer_id":52439344447762,"sku":"PENGDZ00169x2","price":20.39,"currency_code":"USD","in_stock":true},{"title":"Module 2【15 Tooth】 \/ 14mm \/ 2 pcs","offer_id":52439344480530,"sku":"PENGDZ00170x2","price":20.39,"currency_code":"USD","in_stock":true},{"title":"Module 2【15 Tooth】 \/ 15mm \/ 2 pcs","offer_id":52439344513298,"sku":"PENGDZ00171x2","price":20.39,"currency_code":"USD","in_stock":true},{"title":"Module 2【45 Tooth】 \/ 14mm + 5mm Keyway \/ 2 pcs","offer_id":52439344546066,"sku":"PENGDZ00172x2","price":145.1,"currency_code":"USD","in_stock":true},{"title":"Module 2【45 Tooth】 \/ 15mm + 5mm Keyway \/ 2 pcs","offer_id":52439344578834,"sku":"PENGDZ00173x2","price":145.1,"currency_code":"USD","in_stock":true},{"title":"Module 2【45 Tooth】 \/ 16mm + 5mm Keyway \/ 2 pcs","offer_id":52439344611602,"sku":"PENGDZ00174x2","price":145.1,"currency_code":"USD","in_stock":true},{"title":"Module 2【45 Tooth】 \/ 18mm + 6mm Keyway \/ 2 pcs","offer_id":52439344644370,"sku":"PENGDZ00175x2","price":145.1,"currency_code":"USD","in_stock":true},{"title":"Module 2【45 Tooth】 \/ 20mm + 6mm Keyway \/ 2 pcs","offer_id":52439344677138,"sku":"PENGDZ00176x2","price":145.1,"currency_code":"USD","in_stock":true},{"title":"Module 2【45 Tooth】 \/ 22mm + 6mm Keyway \/ 2 pcs","offer_id":52439344709906,"sku":"PENGDZ00177x2","price":145.1,"currency_code":"USD","in_stock":true},{"title":"Module 2【45 Tooth】 \/ 24mm + 8mm Keyway \/ 2 pcs","offer_id":52439344742674,"sku":"PENGDZ00178x2","price":145.1,"currency_code":"USD","in_stock":true},{"title":"Module 2【45 Tooth】 \/ 25mm + 8mm Keyway \/ 2 pcs","offer_id":52439344775442,"sku":"PENGDZ00179x2","price":145.1,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture6of12_4871e409-08c5-402f-b2a8-c40a44372d24.jpg?v=1783390389","url":"https:\/\/homediyer.com\/products\/mod-2-bevel-gear-c45-steel-1-3-ratio-15-45-tooth-10mm-24mm-bore-hardened-black","provider":"HomeDIYer","version":"1.0","type":"link"}