10-Pack 125mm Plastic Gear Rack 83 Teeth | 0.5M DIY Parts
10-Pack 125mm Plastic Gear Rack 83 Teeth | 0.5M DIY Parts
10-Pack 125mm Plastic Herringbone Gear Rack – 83 Teeth
Build 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.
Key Specifications
- Material: Durable white plastic
- Rack Length: 125mm
- Number of Teeth: 83
- Tooth Profile: Herringbone gear
- Rack Modulus: 0.5M (Pressure Angle 0.5M)
- Teeth Height: 7mm
- Tooth Surface Width: 4mm
- Fixed Aperture: Small hole 2.15mm / Large hole 2.65mm
- Color: White
- Package: 10 pieces
Why Choose These Gear Racks?
- ✅ Herringbone tooth profile for smoother engagement and reduced backlash
- ✅ Lightweight plastic construction — ideal for low-load DIY and hobby applications
- ✅ Two mounting hole sizes for flexible installation in your build
- ✅ Consistent 0.5 modulus compatible with standard 0.5M gears and pinions
- ✅ Pack of 10 — stock up for multiple projects or prototypes
Ideal For
These 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.
Made in Mainland China.
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Note: Due to manual measurement, please allow a tolerance of 1–3mm. Colors may vary slightly from screen to screen due to monitor calibration differences.
Learn more: OSHA guidance on hand and power tools
Frequently Asked Questions
Q: What modulus are these plastic gear racks, and what gears are they compatible with?
A: 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.
Q: What are the mounting hole dimensions on the 125mm plastic gear rack?
A: 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.
Q: Are these gear racks suitable for motorized or powered applications?
A: 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.