{"product_id":"1-5-mod-80-teeth-spur-gears-transmission-gear-with-step-45-steel-blackening","title":"1.5 Mod 80 Teeth Spur Gears Transmission Gear With Step 45# Steel Blackening","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003e1.5 Mod 80-Tooth Stepped Spur Gear — Precision Transmission for DIY Automation Builds\u003c\/h2\u003e\n\u003cp\u003eWhen your motion system demands exact tooth engagement and a secure shaft fit, a poorly dimensioned gear becomes the weakest link in the entire drivetrain. Makers, robotics builders, and CNC hobbyists who need a reliable 1.5 module 80-tooth spur gear with a machined step will find this component ready to drop into demanding transmission assemblies without rework.\u003c\/p\u003e\n\u003cp\u003eThis spur gear is machined from 45# carbon steel and finished with a blackening (oxide) surface treatment for corrosion resistance and reduced light reflection. The module is 1.5M with 80 teeth, a step hub depth of 50 mm, and a tooth thickness of 15 mm. Bore options range from 8 mm (0.31 in) to 25 mm (0.98 in), including plain round bores and keyed bores (5×2.3 mm, 6×2.8 mm, and 8×3.3 mm keyways) to suit a wide range of shaft diameters.\u003c\/p\u003e\n\u003cp\u003eTypical use cases include DIY conveyor belt drives requiring a 1.5 mod stepped spur gear, open-frame CNC router axis transmission assemblies, and custom robotic arm joint reduction stages where a blackened steel spur gear minimises glare under work lighting.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003e⚙️\u003c\/span\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for 1.5 module gear systems. Mates with any standard 1.5M rack, pinion, or mating gear. Verify bore diameter and keyway dimensions against your shaft before ordering.\n\u003c\/div\u003e\n\n\u003ch2\u003e✅ Key Features of These 1.5 Mod 80-Tooth Stepped Spur Gears\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\n\u003cdiv\u003e\n\u003cdiv class=\"hdiy-icon\"\u003e🔩\u003c\/div\u003e\n\u003cstrong\u003e45# Carbon Steel Construction\u003c\/strong\u003e\n\u003cp\u003eMachined from medium-carbon 45# steel for a balance of toughness and machinability, suitable for moderate-to-high load transmission applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\u003cdiv class=\"hdiy-icon\"\u003e🖤\u003c\/div\u003e\n\u003cstrong\u003eBlackening Surface Treatment\u003c\/strong\u003e\n\u003cp\u003eOxide blackening provides a layer of corrosion resistance and a matte finish that reduces reflectivity — useful in optical or precision environments.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\u003cdiv class=\"hdiy-icon\"\u003e📐\u003c\/div\u003e\n\u003cstrong\u003eStepped Hub Design (Step 50, Tooth Thickness 15)\u003c\/strong\u003e\n\u003cp\u003eThe integrated step hub (depth 50 mm) allows secure axial positioning on the shaft without additional spacers, simplifying assembly in tight enclosures.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\u003cdiv class=\"hdiy-icon\"\u003e🔄\u003c\/div\u003e\n\u003cstrong\u003eWide Bore Range — Round \u0026amp; Keyed Options\u003c\/strong\u003e\n\u003cp\u003eAvailable in plain round bores from 8 mm to 25 mm and keyed bores (5×2.3 mm, 6×2.8 mm, 8×3.3 mm keyways) to match standard shaft-key combinations.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\u003cdiv class=\"hdiy-icon\"\u003e⚡\u003c\/div\u003e\n\u003cstrong\u003eStandard 1.5 Module Tooth Profile\u003c\/strong\u003e\n\u003cp\u003eConforms to standard 1.5M involute tooth geometry, ensuring smooth meshing with any compatible 1.5 module rack or mating gear in your drivetrain.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\u003cdiv class=\"hdiy-icon\"\u003e🛠️\u003c\/div\u003e\n\u003cstrong\u003eReady for DIY \u0026amp; Maker Builds\u003c\/strong\u003e\n\u003cp\u003eSized and finished for direct installation in open-frame CNC machines, conveyor drives, robotic joints, and other maker automation projects.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003ch2\u003e📐 Technical Specifications — 1.5 Module Spur Gear\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eModule\u003c\/th\u003e\n\u003ctd\u003e1.5M\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNumber of Teeth\u003c\/th\u003e\n\u003ctd\u003e80T\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTooth Thickness\u003c\/th\u003e\n\u003ctd\u003e15 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStep Hub Depth\u003c\/th\u003e\n\u003ctd\u003e50 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePitch Diameter\u003c\/th\u003e\n\u003ctd\u003e120 mm (Module × Teeth = 1.5 × 80)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePressure Angle\u003c\/th\u003e\n\u003ctd\u003e20° (standard involute)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003e45# Carbon Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSurface Treatment\u003c\/th\u003e\n\u003ctd\u003eBlackening (Oxide)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Diameter\u003c\/th\u003e\n\u003ctd\u003eSee variant options (8–25 mm round; keyed options available)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eKeyway Dimensions\u003c\/th\u003e\n\u003ctd\u003eSee variant options (5×2.3 mm \/ 6×2.8 mm \/ 8×3.3 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOverall Weight\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\u003e1 pc per order\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-faq\"\u003e\n\u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eHow do I choose the right bore size for my shaft?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eMeasure your shaft diameter with a caliper. Select the matching plain round bore (e.g., 10 mm, 12 mm, 15 mm) or a keyed bore if your shaft has a keyway. For keyed shafts, match the keyway width and depth — options include 5×2.3 mm, 6×2.8 mm, and 8×3.3 mm. When in doubt, choose the bore that matches your shaft exactly; do not use an oversized bore without a bushing.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat load can this spur gear handle?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThis gear is machined from 45# carbon steel, which offers a tensile strength of approximately 600–800 MPa depending on heat treatment. It is suitable for moderate-to-high torque transmission in DIY automation, conveyor, and robotics applications. For precise load ratings, calculate based on your RPM, torque, and duty cycle using standard gear design formulas (AGMA or ISO 6336).\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eDoes the blackening treatment prevent rust?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThe oxide blackening layer provides a degree of corrosion resistance in dry or mildly humid indoor environments. For outdoor use or high-humidity conditions, we recommend applying a light coat of machine oil or grease to the gear surface after installation to extend service life.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWill this gear mesh with my existing 1.5 module rack or pinion?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes — this gear uses a standard 1.5M involute tooth profile with a 20° pressure angle, which is compatible with any standard 1.5 module rack, pinion, or mating spur gear of the same module and pressure angle. Always verify the module and pressure angle of your existing components before ordering.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the pitch diameter of this gear?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThe pitch diameter is calculated as Module × Number of Teeth = 1.5 × 80 = 120 mm. The outer (tip) diameter will be approximately 123 mm (pitch diameter + 2 × module). Use these dimensions to verify clearance in your housing or frame before installation.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eCan I use this gear in a vertical orientation or overhead drive?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes. The stepped hub design allows secure axial retention on the shaft, making it suitable for vertical or overhead installations. Ensure the set screw or keyway is properly torqued and consider adding a retaining ring or collar for additional axial security in high-vibration environments.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eIs one piece included per order, and can I order multiple?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eEach order includes 1 piece (1 pcs packing quantity). To order multiple gears, simply increase the quantity in your cart. All pieces are from the same production batch, ensuring consistent dimensions and surface finish across your build.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-cta\"\u003e\n🛒 Select your \u003cstrong\u003ebore size and model\u003c\/strong\u003e above, then add to cart.\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I choose the right bore size for my shaft?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Measure your shaft diameter with a caliper. Select the matching plain round bore (e.g., 10 mm, 12 mm, 15 mm) or a keyed bore if your shaft has a keyway. For keyed shafts, match the keyway width and depth — options include 5×2.3 mm, 6×2.8 mm, and 8×3.3 mm. When in doubt, choose the bore that matches your shaft exactly; do not use an oversized bore without a bushing.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What load can this spur gear handle?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"This gear is machined from 45# carbon steel, which offers a tensile strength of approximately 600–800 MPa depending on heat treatment. It is suitable for moderate-to-high torque transmission in DIY automation, conveyor, and robotics applications.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Does the blackening treatment prevent rust?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The oxide blackening layer provides a degree of corrosion resistance in dry or mildly humid indoor environments. For outdoor use or high-humidity conditions, apply a light coat of machine oil or grease after installation.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Will this gear mesh with my existing 1.5 module rack or pinion?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes — this gear uses a standard 1.5M involute tooth profile with a 20° pressure angle, compatible with any standard 1.5 module rack, pinion, or mating spur gear of the same module and pressure angle.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the pitch diameter of this gear?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The pitch diameter is 1.5 × 80 = 120 mm. The outer (tip) diameter is approximately 123 mm.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I use this gear in a vertical orientation or overhead drive?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. The stepped hub design allows secure axial retention on the shaft, making it suitable for vertical or overhead installations. Ensure the set screw or keyway is properly torqued.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is one piece included per order, and can I order multiple?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Each order includes 1 piece. To order multiple gears, increase the quantity in your cart.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"HomeDIYer","offers":[{"title":"1.5M 80T, Step 50, Tooth Thickness 15 \/ 10mm \/ 1 pcs","offer_id":52443230339346,"sku":"GLFBFHHGLBZSJ058018x1","price":190.66,"currency_code":"USD","in_stock":true},{"title":"1.5M 80T, Step 50, Tooth Thickness 15 \/ 12mm \/ 1 pcs","offer_id":52443230372114,"sku":"GLFBFHHGLBZSJ058019x1","price":190.66,"currency_code":"USD","in_stock":true},{"title":"1.5M 80T, Step 50, Tooth Thickness 15 \/ 15mm \/ 1 pcs","offer_id":52443230404882,"sku":"GLFBFHHGLBZSJ058020x1","price":190.66,"currency_code":"USD","in_stock":true},{"title":"1.5M 80T, Step 50, Tooth Thickness 15 \/ 16mm \/ 1 pcs","offer_id":52443230437650,"sku":"GLFBFHHGLBZSJ058021x1","price":191.01,"currency_code":"USD","in_stock":true},{"title":"1.5M 80T, Step 50, Tooth Thickness 15 \/ 17mm \/ 1 pcs","offer_id":52443230470418,"sku":"GLFBFHHGLBZSJ058022x1","price":191.01,"currency_code":"USD","in_stock":true},{"title":"1.5M 80T, Step 50, Tooth Thickness 15 \/ 19mm \/ 1 pcs","offer_id":52443230503186,"sku":"GLFBFHHGLBZSJ058023x1","price":191.01,"currency_code":"USD","in_stock":true},{"title":"1.5M 80T, Step 50, Tooth Thickness 15 \/ 20mm \/ 1 pcs","offer_id":52443230535954,"sku":"GLFBFHHGLBZSJ058024x1","price":191.01,"currency_code":"USD","in_stock":true},{"title":"1.5M 80T, Step 50, Tooth Thickness 15 \/ 25mm \/ 1 pcs","offer_id":52443230568722,"sku":"GLFBFHHGLBZSJ058025x1","price":191.01,"currency_code":"USD","in_stock":true},{"title":"1.5M 80T, Step 50, Tooth Thickness 15 \/ 8mm \/ 1 pcs","offer_id":52443230601490,"sku":"GLFBFHHGFCD05314x1","price":191.01,"currency_code":"USD","in_stock":true},{"title":"1.5M 80T, Step 50, Tooth Thickness 15 \/ 18mm \/ 1 pcs","offer_id":52443230634258,"sku":"GLFBFHHGFCD05315x1","price":191.01,"currency_code":"USD","in_stock":true},{"title":"1.5M 80T, Step 50, Tooth Thickness 15 \/ 24mm \/ 1 pcs","offer_id":52443230667026,"sku":"GLFBFHHGFCD05316x1","price":191.01,"currency_code":"USD","in_stock":true},{"title":"1.5M 80T, Step 50, Tooth Thickness 15 \/ 14\/5*2.3mm \/ 1 pcs","offer_id":52443230699794,"sku":"GLFBFHHGFCD05317x1","price":192.79,"currency_code":"USD","in_stock":true},{"title":"1.5M 80T, Step 50, Tooth Thickness 15 \/ 15\/5*2.3mm \/ 1 pcs","offer_id":52443230732562,"sku":"GLFBFHHGFCD05318x1","price":192.79,"currency_code":"USD","in_stock":true},{"title":"1.5M 80T, Step 50, Tooth Thickness 15 \/ 16\/5*2.3mm \/ 1 pcs","offer_id":52443230765330,"sku":"GLFBFHHGFCD05319x1","price":192.79,"currency_code":"USD","in_stock":true},{"title":"1.5M 80T, Step 50, Tooth Thickness 15 \/ 17\/5*2.3mm \/ 1 pcs","offer_id":52443230798098,"sku":"GLFBFHHGFCD05320x1","price":192.79,"currency_code":"USD","in_stock":true},{"title":"1.5M 80T, Step 50, Tooth Thickness 15 \/ 18\/6*2.8mm \/ 1 pcs","offer_id":52443230830866,"sku":"GLFBFHHGFCD05321x1","price":192.79,"currency_code":"USD","in_stock":true},{"title":"1.5M 80T, Step 50, Tooth Thickness 15 \/ 19\/6*2.8mm \/ 1 pcs","offer_id":52443230863634,"sku":"GLFBFHHGFCD05322x1","price":192.79,"currency_code":"USD","in_stock":true},{"title":"1.5M 80T, Step 50, Tooth Thickness 15 \/ 20\/6*2.8mm \/ 1 pcs","offer_id":52443230896402,"sku":"GLFBFHHGFCD05323x1","price":192.79,"currency_code":"USD","in_stock":true},{"title":"1.5M 80T, Step 50, Tooth Thickness 15 \/ 22\/6*2.8mm \/ 1 pcs","offer_id":52443230929170,"sku":"GLFBFHHGFCD05324x1","price":193.16,"currency_code":"USD","in_stock":true},{"title":"1.5M 80T, Step 50, Tooth Thickness 15 \/ 24\/8*3.3mm \/ 1 pcs","offer_id":52443230961938,"sku":"GLFBFHHGFCD05325x1","price":193.16,"currency_code":"USD","in_stock":true},{"title":"1.5M 80T, Step 50, Tooth Thickness 15 \/ 25\/8*3.3mm \/ 1 pcs","offer_id":52443230994706,"sku":"GLFBFHHGFCD05326x1","price":193.16,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Main-05_c52abfa3-5388-4b87-b889-9500c7a1836c.jpg?v=1784040041","url":"https:\/\/homediyer.com\/products\/1-5-mod-80-teeth-spur-gears-transmission-gear-with-step-45-steel-blackening","provider":"HomeDIYer","version":"1.0","type":"link"}