{"product_id":"5mod-15-33t-cylindrical-spur-gear-85mm-175mm-outer-diameter-motor-pinion","title":"5Mod 15-33T Cylindrical Spur Gear 85mm-175mm Outer Diameter Motor Pinion","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\n  \u003cdiv class=\"hdiy-overview\"\u003e\n    \u003ch2\u003e5 Module Cylindrical Spur Gear — Precision Motor Pinion for Demanding Drive Applications\u003c\/h2\u003e\n    \u003cp\u003eWhen a mismatched or undersized gear causes slippage, noise, or premature wear in your drive train, the root cause is almost always a mismatch between module, tooth count, and shaft bore. Engineers, robotics builders, and machine designers who need a reliable 5 module cylindrical spur gear with a confirmed outer diameter will find this motor pinion series purpose-built for that challenge.\u003c\/p\u003e\n    \u003cp\u003eEach gear in this series is machined to a 5 Mod (Module 5) standard, with tooth counts ranging from 15T to 33T and corresponding outer diameters from 85 mm (3.35 in) to 175 mm (6.89 in). The body is typically manufactured from carbon steel or alloy steel with a precision-hobbed tooth profile, delivering consistent pitch accuracy across the full tooth range. Bore diameter and keyway dimensions vary by tooth count — see variant options for confirmed bore specs.\u003c\/p\u003e\n    \u003cp\u003eTypical use cases include low-speed, high-torque motor pinion assemblies in conveyor systems, CNC rotary axes, robotic joint actuators, and custom gearbox builds where a 5 mod spur gear with a large outer diameter is required. Long-tail applications such as \"5 module gear for stepper motor\" and \"large diameter steel spur gear 170mm\" are well served by the 32T and 33T variants in this range.\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 Meshes with any Module 5 (Mod 5) rack, pinion, or mating gear. Confirm bore diameter and keyway against your shaft spec before ordering.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-features\"\u003e\n    \u003ch2\u003e✅ Key Features of These 5 Module Cylindrical Spur Gears\u003c\/h2\u003e\n    \u003cdiv class=\"hdiy-list\"\u003e\n      \u003cdiv\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\n        \u003cstrong\u003eWide Tooth-Count Range\u003c\/strong\u003e\n        \u003cp\u003eAvailable from 15T (85 mm OD) through 33T (175 mm OD), covering a broad gear ratio spread in a single product family — no need to source from multiple suppliers.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\n        \u003cstrong\u003eModule 5 Standard Pitch\u003c\/strong\u003e\n        \u003cp\u003eMachined to the international Module 5 standard, ensuring direct mesh compatibility with any Mod 5 rack or mating gear without custom modification.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e🏗️\u003c\/span\u003e\n        \u003cstrong\u003eSteel Construction for Load Durability\u003c\/strong\u003e\n        \u003cp\u003eTypically carbon steel or alloy steel body with hobbed tooth profile — engineered to handle the torque loads common in motor pinion and gearbox applications.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e🎯\u003c\/span\u003e\n        \u003cstrong\u003eConfirmed Outer Diameter per Variant\u003c\/strong\u003e\n        \u003cp\u003eEach tooth count variant lists its exact OD (e.g., 20T = 110 mm, 30T = 160 mm), eliminating guesswork when designing for tight housing clearances.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e\n        \u003cstrong\u003eCylindrical Spur Profile\u003c\/strong\u003e\n        \u003cp\u003eStraight-cut cylindrical spur tooth geometry delivers efficient power transfer on parallel shafts with minimal axial thrust — ideal for compact drive assemblies.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e🛠️\u003c\/span\u003e\n        \u003cstrong\u003eMotor Pinion Ready\u003c\/strong\u003e\n        \u003cp\u003eBore and hub dimensions sized for direct mounting on common motor output shafts. Confirm bore and keyway dimensions against your motor spec via the variant options.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-table-wrap\"\u003e\n    \u003ch2\u003e📐 Technical Specifications — Module 5 Cylindrical Spur Gear\u003c\/h2\u003e\n    \u003ctable\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003cth\u003eModule (Mod)\u003c\/th\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eTooth Count Range\u003c\/th\u003e\n\u003ctd\u003e15T – 33T\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eOuter Diameter Range\u003c\/th\u003e\n\u003ctd\u003e85 mm – 175 mm (3.35 in – 6.89 in)\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\u003c\/th\u003e\n\u003ctd\u003eInvolute, hobbed\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\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eSurface Finish\u003c\/th\u003e\n\u003ctd\u003eSee variant options\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\u003eHub Width\u003c\/th\u003e\n\u003ctd\u003eSee 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        \u003ctr\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003ctd\u003eMotor pinion, gearbox, conveyor, robotics, CNC rotary axis\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 tooth count for my application?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eSelect your tooth count based on the gear ratio you need and the available space in your housing. The outer diameter increases by approximately 5 mm per additional tooth at Module 5 (OD = (T + 2) × Module). For example, a 20T gear gives a 110 mm OD; a 30T gear gives a 160 mm OD. Match the mating gear tooth count to achieve your target reduction ratio.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWill this gear mesh with my existing Module 5 rack or pinion?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes — any gear or rack manufactured to the Module 5 standard with a 20° pressure angle will mesh correctly with these gears. Verify that your existing component is labeled \"Mod 5\" or \"m5\" and uses a 20° pressure angle before ordering.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat material are these spur gears made from?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThese gears are typically manufactured from carbon steel or alloy steel with a hobbed tooth profile. Exact material grade and surface treatment (e.g., blackened, zinc-plated) vary by variant. Please check the variant options or contact us to confirm the material specification for your selected tooth count.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eHow strong are these gears under continuous load?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eSteel spur gears at Module 5 are rated for substantial torque loads in industrial and semi-industrial applications. Actual load capacity depends on material grade, RPM, lubrication, and mounting accuracy. For critical load calculations, contact us with your RPM, torque, and duty cycle requirements so we can confirm suitability.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eAre these gears corrosion-resistant for outdoor or wet environments?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eStandard carbon steel gears have limited corrosion resistance without additional treatment. For outdoor or humid environments, we recommend applying a gear lubricant or grease, or selecting a variant with a protective surface finish. Contact us to confirm available finish options for your selected tooth count.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat bore diameter and keyway does each variant have?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eBore diameter and keyway dimensions vary by tooth count and are listed in the variant options. Please select your tooth count above to view the confirmed bore spec, or contact us with your shaft diameter and we will confirm compatibility before you order.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eCan I use this gear as a direct motor pinion on a stepper or servo motor?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes — these gears are designed for motor pinion use. Confirm that your motor output shaft diameter matches the bore of your selected variant, and that the keyway (if present) aligns with your motor shaft key. For direct mounting without a keyway, a set-screw hub or interference fit may be required.\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 tooth count (OD) 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 tooth count for my application?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Select your tooth count based on the gear ratio you need and the available space in your housing. The outer diameter increases by approximately 5 mm per additional tooth at Module 5 (OD = (T + 2) × Module). For example, a 20T gear gives a 110 mm OD; a 30T gear gives a 160 mm OD. Match the mating gear tooth count to achieve your target reduction ratio.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Will this gear mesh with my existing Module 5 rack or pinion?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes — any gear or rack manufactured to the Module 5 standard with a 20° pressure angle will mesh correctly with these gears. Verify that your existing component is labeled Mod 5 or m5 and uses a 20° pressure angle before ordering.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What material are these spur gears made from?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"These gears are typically manufactured from carbon steel or alloy steel with a hobbed tooth profile. Exact material grade and surface treatment vary by variant. Please check the variant options or contact us to confirm the material specification for your selected tooth count.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How strong are these gears under continuous load?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Steel spur gears at Module 5 are rated for substantial torque loads in industrial and semi-industrial applications. Actual load capacity depends on material grade, RPM, lubrication, and mounting accuracy. Contact us with your RPM, torque, and duty cycle requirements for confirmation.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Are these gears corrosion-resistant for outdoor or wet environments?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Standard carbon steel gears have limited corrosion resistance without additional treatment. For outdoor or humid environments, apply a gear lubricant or grease, or select a variant with a protective surface finish. Contact us to confirm available finish options.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What bore diameter and keyway does each variant have?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Bore diameter and keyway dimensions vary by tooth count and are listed in the variant options. Please select your tooth count above to view the confirmed bore spec, or contact us with your shaft diameter to confirm compatibility.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I use this gear as a direct motor pinion on a stepper or servo motor?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes — these gears are designed for motor pinion use. Confirm that your motor output shaft diameter matches the bore of your selected variant, and that the keyway aligns with your motor shaft key. For direct mounting without a keyway, a set-screw hub or interference fit may be required.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"HomeDIYer","offers":[{"title":"5 Mod \/ 15T (85mm)","offer_id":52442796851474,"sku":"GLFBLFFSHXJZC4665x1","price":108.92,"currency_code":"USD","in_stock":true},{"title":"5 Mod \/ 16T (90mm)","offer_id":52442796884242,"sku":"GLFBLFFSHXJZC4666x1","price":187.41,"currency_code":"USD","in_stock":true},{"title":"5 Mod \/ 17T (95mm)","offer_id":52442796917010,"sku":"GLFBLFFSHXJZC4667x1","price":205.03,"currency_code":"USD","in_stock":true},{"title":"5 Mod \/ 18T (100mm)","offer_id":52442796949778,"sku":"GLFBLFFSHXJZC4668x1","price":217.53,"currency_code":"USD","in_stock":true},{"title":"5 Mod \/ 19T (105mm)","offer_id":52442796982546,"sku":"GLFBLFFSHXJZC4669x1","price":230.04,"currency_code":"USD","in_stock":true},{"title":"5 Mod \/ 20T (110mm)","offer_id":52442797015314,"sku":"GLFBLFFSHXJZC4670x1","price":248.24,"currency_code":"USD","in_stock":true},{"title":"5 Mod \/ 21T (115mm)","offer_id":52442797048082,"sku":"GLFBLFFSHXJZC4671x1","price":267.58,"currency_code":"USD","in_stock":true},{"title":"5 Mod \/ 22T (120mm)","offer_id":52442797080850,"sku":"GLFBLFFSHXJZC4672x1","price":280.65,"currency_code":"USD","in_stock":true},{"title":"5 Mod \/ 23T (125mm)","offer_id":52442797113618,"sku":"GLFBLFFSHXJZC4673x1","price":299.4,"currency_code":"USD","in_stock":true},{"title":"5 Mod \/ 24T (130mm)","offer_id":52442797146386,"sku":"GLFBLFFSHXJZC4674x1","price":317.61,"currency_code":"USD","in_stock":true},{"title":"5 Mod \/ 25T (135mm)","offer_id":52442797179154,"sku":"GLFBLFFSHXJZC4675x1","price":337.51,"currency_code":"USD","in_stock":true},{"title":"5 Mod \/ 26T (140mm)","offer_id":52442797211922,"sku":"GLFBLFFSHXJZC4676x1","price":361.39,"currency_code":"USD","in_stock":true},{"title":"5 Mod \/ 27T (145mm)","offer_id":52442797244690,"sku":"GLFBLFFSHXJZC4677x1","price":381.87,"currency_code":"USD","in_stock":true},{"title":"5 Mod \/ 28T (150mm)","offer_id":52442797277458,"sku":"GLFBLFFSHXJZC4678x1","price":405.76,"currency_code":"USD","in_stock":true},{"title":"5 Mod \/ 29T (155mm)","offer_id":52442797310226,"sku":"GLFBLFFSHXJZC4679x1","price":425.65,"currency_code":"USD","in_stock":true},{"title":"5 Mod \/ 30T (160mm)","offer_id":52442797342994,"sku":"GLFBLFFSHXJZC4680x1","price":449.53,"currency_code":"USD","in_stock":true},{"title":"5 Mod \/ 32T (170mm)","offer_id":52442797375762,"sku":"GLFBLFFSHXJZC4681x1","price":499.57,"currency_code":"USD","in_stock":true},{"title":"5 Mod \/ 33T (175mm)","offer_id":52442797408530,"sku":"GLFBLFFSHXJZC4682x1","price":526.86,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture1of4_b8fb24b9-dc2c-4a4f-9ce1-3d49edeaa38a.jpg?v=1783594509","url":"https:\/\/homediyer.com\/products\/5mod-15-33t-cylindrical-spur-gear-85mm-175mm-outer-diameter-motor-pinion","provider":"HomeDIYer","version":"1.0","type":"link"}