{"product_id":"10-pack-125mm-plastic-gear-rack-83-teeth-diy-mechanical-parts","title":"10-Pack 125mm Plastic Gear Rack 83 Teeth | 0.5M DIY Parts","description":"\n\u003ch2\u003e10-Pack 125mm Plastic Herringbone Gear Rack – 83 Teeth\u003c\/h2\u003e\n\u003cp\u003eBuild smarter DIY projects with these precision plastic gear racks. Each piece features 83 herringbone teeth, a 0.5 modulus, and a clean white finish — perfect for robotics, mechanical models, toys, and educational engineering builds. Get 10 pieces per pack for great value.\u003c\/p\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Durable white plastic\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRack Length:\u003c\/strong\u003e 125mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Teeth:\u003c\/strong\u003e 83\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTooth Profile:\u003c\/strong\u003e Herringbone gear\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRack Modulus:\u003c\/strong\u003e 0.5M (Pressure Angle 0.5M)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTeeth Height:\u003c\/strong\u003e 7mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTooth Surface Width:\u003c\/strong\u003e 4mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFixed Aperture:\u003c\/strong\u003e Small hole 2.15mm \/ Large hole 2.65mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage:\u003c\/strong\u003e 10 pieces\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy Choose These Gear Racks?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eHerringbone tooth profile\u003c\/strong\u003e for smoother engagement and reduced backlash\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eLightweight plastic construction\u003c\/strong\u003e — ideal for low-load DIY and hobby applications\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eTwo mounting hole sizes\u003c\/strong\u003e for flexible installation in your build\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eConsistent 0.5 modulus\u003c\/strong\u003e compatible with standard 0.5M gears and pinions\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003ePack of 10\u003c\/strong\u003e — stock up for multiple projects or prototypes\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIdeal For\u003c\/h3\u003e\n\u003cp\u003eThese gear racks are perfect for hobbyists, students, educators, and makers working on DIY robots, mechanical toy builds, gear-and-pinion linear motion systems, science fair projects, and prototype mechanisms.\u003c\/p\u003e\n\n\u003cp\u003eMade in Mainland China.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eRelated Products You May Like:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/34-compartment-double-sided-hardware-storage-box-removable-dividers\"\u003e34-Compartment Double-Sided Hardware Storage Box \u0026amp; Dividers\u003c\/a\u003e — keep your mechanical parts organized\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/25-in-1-precision-magnetic-screwdriver-set-pro-repair-tool-kit\"\u003e25-in-1 Precision Magnetic Screwdriver Set | Pro Repair Kit\u003c\/a\u003e — essential for assembling your builds\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/5-in-1-diamond-ceramic-knife-sharpener-kitchen-scissors\"\u003e5-in-1 Diamond Knife Sharpener | Kitchen \u0026amp; Scissor Sharpener\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cem\u003eNote: Due to manual measurement, please allow a tolerance of 1–3mm. Colors may vary slightly from screen to screen due to monitor calibration differences.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/hand-power-tools\" target=\"_blank\" rel=\"noopener\"\u003eOSHA guidance on hand and power tools\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What modulus are these plastic gear racks, and what gears are they compatible with?\u003c\/h4\u003e\n\u003cp\u003eA: These gear racks have a 0.5 modulus (0.5M). They are compatible with standard 0.5M pinion gears and spur gears, making them easy to integrate into most small-scale DIY mechanical and robotic projects.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What are the mounting hole dimensions on the 125mm plastic gear rack?\u003c\/h4\u003e\n\u003cp\u003eA: Each rack features two fixed aperture sizes: a small hole of 2.15mm and a large hole of 2.65mm, giving you flexible mounting options for your build or prototype.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Are these gear racks suitable for motorized or powered applications?\u003c\/h4\u003e\n\u003cp\u003eA: These plastic gear racks are designed for light-duty DIY, hobby, and educational use. They work great in low-torque, low-speed mechanisms such as toy drives, demonstration models, and small robotic projects. For heavy-load or high-speed industrial applications, a metal rack would be recommended.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What modulus are these plastic gear racks, and what gears are they compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"These gear racks have a 0.5 modulus (0.5M). 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