{"product_id":"spur-gear-module-1-aluminium-12-60-tooth-hub-pinion-motor-gear-bore-4-16mm","title":"Spur Gear Module 1 Aluminium 12-60 Tooth with Hub Pinion Motor Gear Bore 4-16mm","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eModule 1 Aluminium Spur Gears — Precise Motion Control for CNC, Robotics \u0026amp; Automation\u003c\/h2\u003e\n\u003cp\u003eWhen your CNC router, 3D printer, or robotic arm demands repeatable, low-backlash power transmission, the wrong gear wastes hours of calibration and risks costly crashes. Engineers, makers, and small-batch manufacturers who need a reliable module 1 spur gear with a wide tooth and bore selection can stop searching — this aluminium pinion gear series covers the full range in one listing.\u003c\/p\u003e\n\u003cp\u003eEach gear is machined from aluminium alloy and features a Module 1 (1 mm\/tooth) tooth profile. Tooth counts span 12 to 60 teeth, and bore sizes range from 4 mm (0.16 in) to 16 mm (0.63 in). Larger tooth counts (40 T and above) are available with an extended hub in either 25 mm or 35 mm hub length to suit deeper shaft engagement requirements. Overall gear diameter scales with tooth count: a 12-tooth gear measures approximately 14 mm (0.55 in) OD, while a 60-tooth gear reaches approximately 62 mm (2.44 in) OD.\u003c\/p\u003e\n\u003cp\u003eTypical use cases include stepper-motor pinion drives on desktop CNC machines, rack-and-pinion linear actuators for automation fixtures, and gear-train assemblies in educational robotics kits. The consistent module 1 pitch makes these gears interchangeable with standard metric rack, worm, and mating spur gears used in open-source motion-control platforms.\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 Fits any Module 1 metric gear system. Mates with Module 1 rack, pinion, and worm gears. Bore sizes 4–16 mm suit NEMA 17, NEMA 23, and equivalent stepper or servo motor shafts. Verify shaft diameter and hub length before ordering.\n\u003c\/div\u003e\n\n\u003ch2\u003e✅ Key Features of These Module 1 Aluminium 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\u003eWide Tooth Range: 12–60 Teeth\u003c\/strong\u003e\n\u003cp\u003eChoose from 23 tooth-count options — from compact 12-tooth pinions to large 60-tooth gears — to dial in your exact gear ratio without custom machining.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\u003cdiv class=\"hdiy-icon\"\u003e🕳️\u003c\/div\u003e\n\u003cstrong\u003eMultiple Bore Sizes: 4–16 mm\u003c\/strong\u003e\n\u003cp\u003eTen bore options (4, 5, 6, 7, 8, 10, 12, 14, 15, 16 mm) cover the most common stepper and servo motor shaft diameters, eliminating the need for bushings in most builds.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\u003cdiv class=\"hdiy-icon\"\u003e🏗️\u003c\/div\u003e\n\u003cstrong\u003eAluminium Alloy Construction\u003c\/strong\u003e\n\u003cp\u003eMachined from lightweight aluminium alloy, these gears offer a strong strength-to-weight ratio suitable for moderate-load motion-control applications where reducing rotating mass matters.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\u003cdiv class=\"hdiy-icon\"\u003e📐\u003c\/div\u003e\n\u003cstrong\u003eStandard Module 1 Tooth Profile\u003c\/strong\u003e\n\u003cp\u003eThe 1 mm\/tooth module pitch is fully interchangeable with any metric Module 1 rack, mating spur gear, or worm gear — no custom tooling or adapters required.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\u003cdiv class=\"hdiy-icon\"\u003e🔧\u003c\/div\u003e\n\u003cstrong\u003eExtended Hub Options for Deep Shaft Engagement\u003c\/strong\u003e\n\u003cp\u003e40 T, 50 T, and 60 T models are available with 25 mm or 35 mm hub lengths, providing extra shaft contact area for higher-torque or vibration-prone environments.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\u003cdiv class=\"hdiy-icon\"\u003e🔄\u003c\/div\u003e\n\u003cstrong\u003eDrop-In Replacement for Open-Source Motion Platforms\u003c\/strong\u003e\n\u003cp\u003eConsistent Module 1 geometry makes these gears direct replacements in RepRap-derived 3D printers, GRBL CNC routers, and other open-source automation platforms that specify metric module gearing.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003ch2\u003e📐 Technical Specifications — Module 1 Aluminium Spur Gears\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 (1 mm per tooth)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTooth Count Range\u003c\/th\u003e\n\u003ctd\u003e12 T – 60 T (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Size Range\u003c\/th\u003e\n\u003ctd\u003e4 mm – 16 mm (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eAluminium alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePressure Angle\u003c\/th\u003e\n\u003ctd\u003e20° (standard metric)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOuter Diameter (OD)\u003c\/th\u003e\n\u003ctd\u003eSee variant options (scales with tooth count)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHub Length\u003c\/th\u003e\n\u003ctd\u003eSee variant options (25 mm or 35 mm for 40 T+)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eNatural aluminium (uncoated)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGear Type\u003c\/th\u003e\n\u003ctd\u003eSpur gear (straight tooth)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePitch Diameter\u003c\/th\u003e\n\u003ctd\u003e= Tooth Count × 1 mm (Module 1 formula)\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\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. Divide the driven gear's tooth count by the driving gear's tooth count to get the ratio. For example, pairing a 20-tooth motor pinion with a 60-tooth output gear gives a 3:1 reduction. Smaller tooth counts produce higher speed; larger tooth counts produce more torque.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhich bore size should I order for my stepper motor shaft?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eMatch the bore size to your motor shaft diameter. NEMA 17 motors typically use 5 mm shafts; NEMA 23 motors commonly use 6.35 mm or 8 mm shafts. If your shaft has a flat (D-cut), you will need to add a set screw after installation — check that the gear body has a set-screw hole or plan to drill and tap one.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eAre these gears strong enough for my CNC or robotics project?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eAluminium alloy spur gears are well-suited for light-to-moderate load applications such as desktop CNC routers, 3D printer extruder drives, and small robotic joints. For heavy industrial loads or continuous high-torque duty cycles, consider steel gears instead. If you are unsure, share your torque and speed requirements and we can advise.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWill these gears corrode or require lubrication?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eAluminium has natural oxidation resistance suitable for indoor, dry environments. For longer service life and quieter operation, apply a light machine oil or dry PTFE lubricant to the tooth faces. Avoid exposing aluminium gears to salt spray or strong acids without additional protective coating.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eAre these gears compatible with Module 1 rack and pinion systems?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes. Any gear in this listing will mesh correctly with a standard Module 1 metric rack or a mating Module 1 spur gear. The 20° pressure angle is the international standard for metric module gearing, ensuring interchangeability across brands and suppliers.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between the 25 mm hub and 35 mm hub versions?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThe hub length refers to the depth of the bore section that grips the shaft. A 35 mm hub provides more shaft contact area, which improves torque transfer and reduces wobble under load — useful in higher-torque or vibration-prone applications. The 25 mm hub is lighter and more compact, suitable for standard motion-control builds.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eCan I use these gears to replace worn gears in an existing machine?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes, provided your existing gears are Module 1 metric. Measure the tooth count and bore diameter of the worn gear, then select the matching variant. If you are unsure of the module, measure the outer diameter in mm and divide by (tooth count + 2) — a result close to 1.0 confirms Module 1.\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, bore size, and quantity 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. Divide the driven gear's tooth count by the driving gear's tooth count to get the ratio. Smaller tooth counts produce higher speed; larger tooth counts produce more torque.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Which bore size should I order for my stepper motor shaft?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Match the bore size to your motor shaft diameter. NEMA 17 motors typically use 5 mm shafts; NEMA 23 motors commonly use 6.35 mm or 8 mm shafts.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Are these gears strong enough for my CNC or robotics project?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Aluminium alloy spur gears are well-suited for light-to-moderate load applications such as desktop CNC routers, 3D printer extruder drives, and small robotic joints.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Will these gears corrode or require lubrication?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Aluminium has natural oxidation resistance suitable for indoor, dry environments. Apply a light machine oil or dry PTFE lubricant to the tooth faces for longer service life.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Are these gears compatible with Module 1 rack and pinion systems?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. Any gear in this listing will mesh correctly with a standard Module 1 metric rack or a mating Module 1 spur gear. The 20° pressure angle is the international standard for metric module gearing.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the difference between the 25 mm hub and 35 mm hub versions?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The hub length refers to the depth of the bore section that grips the shaft. A 35 mm hub provides more shaft contact area for higher-torque applications; the 25 mm hub is lighter and more compact.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I use these gears to replace worn gears in an existing machine?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes, provided your existing gears are Module 1 metric. Measure the tooth count and bore diameter of the worn gear, then select the matching variant.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"HomeDIYer","offers":[{"title":"Module 1【12 Tooth】 \/ 4mm \/ 1 pcs","offer_id":52442717716754,"sku":"PENGJGJXCD2908x1","price":12.23,"currency_code":"USD","in_stock":true},{"title":"Module 1【12 Tooth】 \/ 5mm \/ 1 pcs","offer_id":52442717749522,"sku":"PENGJGJXCD2909x1","price":12.23,"currency_code":"USD","in_stock":true},{"title":"Module 1【12 Tooth】 \/ 6mm \/ 1 pcs","offer_id":52442717782290,"sku":"PENGJGJXCD2910x1","price":12.23,"currency_code":"USD","in_stock":true},{"title":"Module 1【12 Tooth】 \/ 8mm \/ 1 pcs","offer_id":52442717815058,"sku":"PENGJGJXCD2911x1","price":12.23,"currency_code":"USD","in_stock":true},{"title":"Module 1【13 Tooth】 \/ 5mm \/ 1 pcs","offer_id":52442717847826,"sku":"PENGJGJXCD2912x1","price":12.23,"currency_code":"USD","in_stock":true},{"title":"Module 1【13 Tooth】 \/ 6mm \/ 1 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