{"product_id":"spur-gear-cylindrical-2m-82t-pitch-6-28mm-thickness-20mm-45-steel","title":"Spur Gear Cylindrical 2M 82T Tooth Pitch 6.28mm Thickness 20mm 45# Steel","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\n  \u003cdiv class=\"hdiy-overview\"\u003e\n    \u003ch2\u003eSpur Gear 2M 82T Cylindrical — Reliable Power Transmission for Precision Drives\u003c\/h2\u003e\n    \u003cp\u003eWhen your machine demands consistent torque transfer and minimal backlash, a poorly matched gear becomes the weakest link in the entire drivetrain. Engineers, machinists, and serious hobbyists working on CNC routers, automation rigs, and custom gearboxes need a cylindrical spur gear that holds tight tolerances without compromise. This 2M 82-tooth spur gear is designed for exactly those applications.\u003c\/p\u003e\n    \u003cp\u003eThis spur gear is machined from 45# medium-carbon steel, offering a strong balance of hardness and machinability. It features a Module 2 tooth profile with 82 teeth, a circular pitch of 6.28mm (approximately 0.247 in), and a face width (thickness) of 20mm (approximately 0.787 in). The outer diameter measures approximately 168mm (6.61 in), and the bore diameter is available in multiple sizes — see variant options for your required bore.\u003c\/p\u003e\n    \u003cp\u003eTypical use cases include CNC router axis drives requiring a 2M gear rack pairing, rotary indexing tables in light industrial automation, and custom gearbox builds for robotics and maker projects where a large-tooth-count spur gear reduces speed while multiplying torque.\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 to mesh with Module 2 (2M) gear racks, pinions, and mating spur gears. Verify bore diameter and keyway requirements before ordering.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-features\"\u003e\n    \u003ch2\u003e✅ Key Features of These 2M 82T Cylindrical Spur Gears\u003c\/h2\u003e\n    \u003cul class=\"hdiy-list\"\u003e\n      \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\u003cstrong\u003eModule 2 Standard Tooth Profile\u003c\/strong\u003e — Meshes precisely with any M2-compatible rack, pinion, or mating gear for smooth, low-noise power transmission.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚙️\u003c\/span\u003e\u003cstrong\u003e82-Tooth Configuration\u003c\/strong\u003e — High tooth count delivers favorable gear ratios for speed reduction and torque multiplication in compact drivetrain layouts.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🛡️\u003c\/span\u003e\u003cstrong\u003e45# Medium-Carbon Steel Construction\u003c\/strong\u003e — Offers solid tensile strength and wear resistance suitable for moderate-load continuous-duty applications.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\u003cstrong\u003e20mm Face Width for Load Distribution\u003c\/strong\u003e — Wider tooth contact area spreads load evenly, reducing tooth stress and extending service life under cyclic loading.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🎯\u003c\/span\u003e\u003cstrong\u003ePrecision-Machined Bore Options\u003c\/strong\u003e — Available in multiple bore diameters to suit common shaft sizes; select your required bore from the variant options above.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e\u003cstrong\u003eVersatile Application Range\u003c\/strong\u003e — Suitable for CNC machines, robotics, indexing tables, conveyor drives, and custom mechanical assemblies requiring a reliable 2M spur gear.\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-table-wrap\"\u003e\n    \u003ch2\u003e📐 Technical Specifications — Cylindrical Spur Gear\u003c\/h2\u003e\n    \u003ctable\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003cth\u003eModule\u003c\/th\u003e\n\u003ctd\u003e2 (M2)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eNumber of Teeth\u003c\/th\u003e\n\u003ctd\u003e82T\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eCircular Pitch\u003c\/th\u003e\n\u003ctd\u003e6.28mm (0.247 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eOuter Diameter\u003c\/th\u003e\n\u003ctd\u003eApprox. 168mm (6.61 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eFace Width (Thickness)\u003c\/th\u003e\n\u003ctd\u003e20mm (0.787 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eBore Diameter\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eKeyway\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003e45# Medium-Carbon Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eNatural \/ Lightly Oiled\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\u003eGear Type\u003c\/th\u003e\n\u003ctd\u003eCylindrical Spur Gear\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eTooth Profile Standard\u003c\/th\u003e\n\u003ctd\u003eModule (ISO)\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 diameter for my shaft?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eMeasure your shaft's outer diameter with a caliper. Select the bore size from the variant options that matches your shaft OD. If you need a keyway or set-screw hole, check the variant description or contact us to confirm availability for your required bore size.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat is the load capacity of this 2M 82T spur gear?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThe 45# steel construction and 20mm face width make this gear suitable for moderate continuous loads typical of CNC drives, light automation, and robotics. For heavy-duty or high-shock applications, consider a hardened or alloy steel variant. Exact load ratings depend on operating speed, lubrication, and mounting precision.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eIs this gear corrosion-resistant?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003e45# carbon steel offers good mechanical strength but moderate corrosion resistance. For outdoor or humid environments, apply a light machine oil or grease coating during installation and maintain regular lubrication. For highly corrosive environments, consider stainless steel alternatives.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWill this gear mesh with my existing Module 2 gear rack or pinion?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes — any gear or rack with a Module 2 (M2) tooth profile and a 20° pressure angle will mesh correctly with this gear. Confirm that your mating component uses the ISO Module standard (not DP\/diametral pitch) before ordering.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat gear ratio can I achieve pairing this 82T gear with a smaller pinion?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eDivide the tooth counts: pairing with a 10T pinion gives an 8.2:1 ratio; a 20T pinion gives 4.1:1; a 41T pinion gives 2:1. The 82-tooth count offers flexible ratio options for speed reduction applications.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eDo I need to lubricate this gear during operation?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes. Apply a suitable gear grease or machine oil to the tooth flanks during installation and re-lubricate at regular service intervals. Proper lubrication reduces wear, lowers operating temperature, and significantly extends gear life.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eCan this gear be used in a vertical orientation?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes, cylindrical spur gears operate in any orientation. In vertical installations, ensure adequate lubrication retention — a grease-type lubricant is preferred over oil to prevent drip-off from the tooth faces.\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 bore diameter 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 diameter for my shaft?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Measure your shaft's outer diameter with a caliper. Select the bore size from the variant options that matches your shaft OD. If you need a keyway or set-screw hole, check the variant description or contact us to confirm availability for your required bore size.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the load capacity of this 2M 82T spur gear?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The 45# steel construction and 20mm face width make this gear suitable for moderate continuous loads typical of CNC drives, light automation, and robotics. Exact load ratings depend on operating speed, lubrication, and mounting precision.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is this gear corrosion-resistant?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"45# carbon steel offers good mechanical strength but moderate corrosion resistance. Apply a light machine oil or grease coating during installation and maintain regular lubrication for humid or outdoor environments.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Will this gear mesh with my existing Module 2 gear rack or pinion?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes — any gear or rack with a Module 2 (M2) tooth profile and a 20° pressure angle will mesh correctly with this gear. Confirm your mating component uses the ISO Module standard before ordering.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What gear ratio can I achieve pairing this 82T gear with a smaller pinion?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Pairing with a 10T pinion gives an 8.2:1 ratio; a 20T pinion gives 4.1:1; a 41T pinion gives 2:1. The 82-tooth count offers flexible ratio options for speed reduction applications.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Do I need to lubricate this gear during operation?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. Apply a suitable gear grease or machine oil to the tooth flanks during installation and re-lubricate at regular service intervals to reduce wear and extend gear life.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can this gear be used in a vertical orientation?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes, cylindrical spur gears operate in any orientation. In vertical installations, use a grease-type lubricant rather than oil to prevent drip-off from the tooth faces.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"HomeDIYer","offers":[{"title":"Default Title","offer_id":52442401964306,"sku":"SSJWDZ566x1","price":300.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Main-01_8084a989-4207-4fd0-a0d7-db2571df9ac0.jpg?v=1783495809","url":"https:\/\/homediyer.com\/products\/spur-gear-cylindrical-2m-82t-pitch-6-28mm-thickness-20mm-45-steel","provider":"HomeDIYer","version":"1.0","type":"link"}