{"product_id":"pinion-gears-1-5-mod-spur-gear-40t-80t-bore-5-12mm-spur-transmission-for-rack","title":"Pinion Gears 1. 5 Mod Spur Gear 40T - 80T Bore 5-12mm Spur Transmission For Rack","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\n  \u003cdiv class=\"hdiy-overview\"\u003e\n    \u003ch2\u003e1.5 Module Spur Gear — Precision Pinion Gears for Rack-and-Pinion Drives\u003c\/h2\u003e\n    \u003cp\u003eWhen your rack-and-pinion system, CNC router, or automation rig demands consistent tooth engagement and zero slop, the wrong gear ruins the whole build. Hobbyists, engineers, and machine builders who need reliable rotary-to-linear motion conversion will find these 1.5 module spur gears a dependable foundation for their drivetrain.\u003c\/p\u003e\n    \u003cp\u003eEach gear is machined from steel with a stepped bore hub design. Tooth counts range from 40T to 80T (1.5M module), with outer diameters spanning approximately 63 mm to 100.5 mm (2.48\"–3.96\"). Bore sizes range from 8 mm to 25 mm (0.31\"–0.98\"), with a hub step depth of 45–50 mm and tooth face width of 15 mm (0.59\"). Available in single-piece or multi-piece packs.\u003c\/p\u003e\n    \u003cp\u003eTypical use cases include rack-and-pinion linear actuators for CNC gantry systems, rotary drive stages in 3D printer Z-axis assemblies, and gear reduction stages in DIY robotics and automation projects requiring 1.5 mod spur gear transmission.\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 use with 1.5 module racks and mating spur gears. Verify bore diameter and outer diameter against your shaft and housing dimensions before ordering.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-features\"\u003e\n    \u003ch2\u003e✅ Key Features of These 1.5 Mod Spur Pinion Gears\u003c\/h2\u003e\n    \u003cdiv class=\"hdiy-list\"\u003e\n      \u003cdiv\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\n        \u003cstrong\u003eMultiple Tooth Counts\u003c\/strong\u003e\n        \u003cp\u003eAvailable in 40T, 45T, 60T, and 65T configurations to match your gear ratio requirements for rack-and-pinion or gear-to-gear drives.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\n        \u003cstrong\u003eStepped Bore Hub Design\u003c\/strong\u003e\n        \u003cp\u003eEach gear features a precision-machined stepped hub (step depth 45–50 mm) that simplifies shaft alignment and axial positioning in your assembly.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e🛡️\u003c\/span\u003e\n        \u003cstrong\u003eSteel Construction\u003c\/strong\u003e\n        \u003cp\u003eMachined from steel for durability under load. Suitable for moderate-duty mechanical drives where consistent tooth mesh and wear resistance matter.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e📏\u003c\/span\u003e\n        \u003cstrong\u003eWide Bore Range\u003c\/strong\u003e\n        \u003cp\u003eBore options from 8 mm to 25 mm (0.31\"–0.98\") accommodate a variety of shaft diameters common in DIY CNC, robotics, and automation builds.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e\n        \u003cstrong\u003eFlexible Pack Quantities\u003c\/strong\u003e\n        \u003cp\u003eOrder 1 to 5 pieces per SKU to match your project needs — whether you're prototyping a single axis or building a multi-axis gantry system.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e\n        \u003cstrong\u003eRack-and-Pinion Ready\u003c\/strong\u003e\n        \u003cp\u003e1.5 module tooth profile is compatible with standard 1.5M racks, making these gears a direct fit for linear motion systems in CNC routers and automation rigs.\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 — 1.5 Module Spur Gears\u003c\/h2\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\u003eTooth Count Options\u003c\/th\u003e\n\u003ctd\u003e40T, 45T, 60T, 65T\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eOuter Diameter (OD)\u003c\/th\u003e\n\u003ctd\u003e63 mm \/ 70.5 mm \/ 93 mm \/ 100.5 mm (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eBore Diameter\u003c\/th\u003e\n\u003ctd\u003e8 mm \/ 12 mm \/ 15 mm \/ 25 mm (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eHub Step Depth\u003c\/th\u003e\n\u003ctd\u003e45–50 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eTooth Face Width\u003c\/th\u003e\n\u003ctd\u003e15 mm (0.59\")\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eSteel\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003ePack Quantity\u003c\/th\u003e\n\u003ctd\u003e1 \/ 2 \/ 3 \/ 4 \/ 5 Pcs (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eWeight per Piece\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eCompatible Rack Module\u003c\/th\u003e\n\u003ctd\u003e1.5M\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\u003eThe tooth count determines your gear ratio and output speed. A 40T gear paired with a smaller pinion gives a higher reduction ratio, while a 65T gear provides more torque multiplication. For rack-and-pinion linear drives, tooth count affects linear travel per shaft revolution — calculate using: travel per rev = π × module × tooth count (e.g., 1.5 × 40 × π ≈ 188 mm\/rev).\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat bore size should I select for my shaft?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eSelect a bore diameter that matches your shaft OD. Available bores are 8 mm, 12 mm, 15 mm, and 25 mm. If your shaft is slightly undersized, a setscrew or keyway adapter can be used. Do not select a bore smaller than your shaft diameter.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eAre these gears compatible with standard 1.5 module racks?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes. These gears are machined to a 1.5M (module 1.5) tooth profile, which is directly compatible with any standard 1.5 module rack. Ensure the rack is also rated for the same module to guarantee proper tooth mesh and avoid premature wear.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat material are these spur gears made from, and how durable are they?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThese gears are machined from steel, offering solid load-bearing capacity for moderate-duty mechanical drives. They are suitable for CNC routers, robotics, and automation systems operating under typical DIY and light industrial loads. For high-speed or heavy-duty continuous operation, verify load ratings against your application requirements.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eDo these gears have corrosion resistance?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThe gears are steel construction. For environments with moisture or chemical exposure, we recommend applying a light machine oil or grease to the tooth surfaces and bore. If corrosion resistance is a primary requirement, contact us to confirm finish options available for your selected variant.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eCan I use these gears for gear-to-gear (not rack) drives?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes. Any two 1.5M spur gears with compatible tooth profiles can mesh together for gear-to-gear power transmission. Ensure center distance is calculated correctly: center distance = (module × (T1 + T2)) \/ 2. For example, a 40T and 60T pair: center distance = 1.5 × (40 + 60) \/ 2 = 75 mm.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhy should I order multiple pieces in one pack?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eMulti-piece packs (2–5 Pcs) are ideal for multi-axis builds, keeping spare gears on hand for maintenance, or building symmetric drive systems (e.g., dual-drive gantry). Ordering in packs typically reduces per-unit cost compared to ordering singles separately.\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 Module\/Teeth, Bore Size, and QTY 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\": \"The tooth count determines your gear ratio and output speed. A 40T gear paired with a smaller pinion gives a higher reduction ratio, while a 65T gear provides more torque multiplication. For rack-and-pinion linear drives, tooth count affects linear travel per shaft revolution — calculate using: travel per rev = π × module × tooth count (e.g., 1.5 × 40 × π ≈ 188 mm\/rev).\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What bore size should I select for my shaft?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Select a bore diameter that matches your shaft OD. Available bores are 8 mm, 12 mm, 15 mm, and 25 mm. If your shaft is slightly undersized, a setscrew or keyway adapter can be used. Do not select a bore smaller than your shaft diameter.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Are these gears compatible with standard 1.5 module racks?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. These gears are machined to a 1.5M (module 1.5) tooth profile, which is directly compatible with any standard 1.5 module rack. Ensure the rack is also rated for the same module to guarantee proper tooth mesh and avoid premature wear.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What material are these spur gears made from, and how durable are they?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"These gears are machined from steel, offering solid load-bearing capacity for moderate-duty mechanical drives. They are suitable for CNC routers, robotics, and automation systems operating under typical DIY and light industrial loads.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Do these gears have corrosion resistance?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The gears are steel construction. For environments with moisture or chemical exposure, we recommend applying a light machine oil or grease to the tooth surfaces and bore.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I use these gears for gear-to-gear (not rack) drives?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. Any two 1.5M spur gears with compatible tooth profiles can mesh together for gear-to-gear power transmission. Center distance = (module × (T1 + T2)) \/ 2. For a 40T and 60T pair: center distance = 1.5 × (40 + 60) \/ 2 = 75 mm.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Why should I order multiple pieces in one pack?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Multi-piece packs (2–5 Pcs) are ideal for multi-axis builds, keeping spare gears on hand for maintenance, or building symmetric drive systems. Ordering in packs typically reduces per-unit cost compared to ordering singles separately.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"HomeDIYer","offers":[{"title":"1.5M 40T \/ Bore 8mm（Step:45\/ T:15mm )\/OD:63 \/ 1 Pcs","offer_id":52442401997074,"sku":"FAS-KCSJ2905x1","price":47.3,"currency_code":"USD","in_stock":true},{"title":"1.5M 40T \/ Bore 8mm（Step:45\/ T:15mm )\/OD:63 \/ 2 Pcs","offer_id":52442402029842,"sku":"FAS-KCSJ2905x2","price":93.51,"currency_code":"USD","in_stock":true},{"title":"1.5M 40T \/ Bore 8mm（Step:45\/ T:15mm )\/OD:63 \/ 3 Pcs","offer_id":52442402062610,"sku":"FAS-KCSJ2905x3","price":139.73,"currency_code":"USD","in_stock":true},{"title":"1.5M 40T \/ Bore 8mm（Step:45\/ T:15mm )\/OD:63 \/ 4 Pcs","offer_id":52442402095378,"sku":"FAS-KCSJ2905x4","price":185.91,"currency_code":"USD","in_stock":true},{"title":"1.5M 40T \/ Bore 8mm（Step:45\/ T:15mm )\/OD:63 \/ 5 Pcs","offer_id":52442402128146,"sku":"FAS-KCSJ2905x5","price":232.12,"currency_code":"USD","in_stock":true},{"title":"1.5M 45T \/ Bore 25mm（Step:45\/ T:15mm )\/OD:70.5 \/ 1 Pcs","offer_id":52442402160914,"sku":"FAS-KCSJ2920x1","price":66.29,"currency_code":"USD","in_stock":true},{"title":"1.5M 45T \/ Bore 25mm（Step:45\/ T:15mm )\/OD:70.5 \/ 2 Pcs","offer_id":52442402193682,"sku":"FAS-KCSJ2920x2","price":131.48,"currency_code":"USD","in_stock":true},{"title":"1.5M 45T \/ Bore 25mm（Step:45\/ T:15mm )\/OD:70.5 \/ 3 Pcs","offer_id":52442402226450,"sku":"FAS-KCSJ2920x3","price":196.68,"currency_code":"USD","in_stock":true},{"title":"1.5M 45T \/ Bore 25mm（Step:45\/ T:15mm )\/OD:70.5 \/ 4 Pcs","offer_id":52442402259218,"sku":"FAS-KCSJ2920x4","price":261.88,"currency_code":"USD","in_stock":true},{"title":"1.5M 60T \/ Bore 12mm（Step:50\/ T:15mm )\/OD:93 \/ 1 Pcs","offer_id":52442402291986,"sku":"FAS-KCSJ2931x1","price":104.26,"currency_code":"USD","in_stock":true},{"title":"1.5M 60T \/ Bore 12mm（Step:50\/ T:15mm )\/OD:93 \/ 2 Pcs","offer_id":52442402324754,"sku":"FAS-KCSJ2931x2","price":207.45,"currency_code":"USD","in_stock":true},{"title":"1.5M 65T \/ Bore 15mm（Step:50\/ T:15mm )\/OD:100.5 \/ 1 Pcs","offer_id":52442402357522,"sku":"FAS-KCSJ2939x1","price":115.76,"currency_code":"USD","in_stock":true},{"title":"1.5M 65T \/ Bore 15mm（Step:50\/ T:15mm )\/OD:100.5 \/ 2 Pcs","offer_id":52442402390290,"sku":"FAS-KCSJ2939x2","price":230.41,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Main-01_0302bcdd-0378-4e62-bf28-f54aca2a6c40.jpg?v=1783497007","url":"https:\/\/homediyer.com\/products\/pinion-gears-1-5-mod-spur-gear-40t-80t-bore-5-12mm-spur-transmission-for-rack","provider":"HomeDIYer","version":"1.0","type":"link"}