The Plastic Spur Gear 65mm 60 Teeth is a blue plastic spur gear with 65mm outer diameter, 60 teeth, and 6mm motor shaft bore, designed for robotics and DIY gear reduction builds. This Spur Gear carries the highest tooth count in StemVolt’s spur gear lineup — 60 teeth on a 65mm body means a higher tooth density per millimeter of circumference than the 80mm/56T gear, resulting in a finer effective tooth pitch and smoother tooth mesh engagement during rotation.
The gears for mechanical projects ratio calculation for this 65mm gear produces one of the cleanest numbers in the lineup — paired with the 15-tooth spur gear pinion, this plastic spur gear delivers exactly, quartering output shaft speed while quadrupling available torque. This clean 4:1 ratio makes it particularly useful for robotics arm joints and wheel drives where predictable, easy-to-program step counts matter in stepper or encoder-driven builds. The 6mm motor shaft bore fits standard DC motor output shafts used across StemVolt’s motor lineup.
this gears for projects 65mm body is larger than the 55mm/50T gear but has more teeth — builders who need maximum tooth count in a compact footprint may prefer this over the 80mm/56T option, but the larger diameter still requires adequate shaft center-to-center clearance in the chassis. Available from StemVolt, offering quality robotics parts and DIY kits at competitive prices. This 65mm 60-tooth plastic spur gear is ideal for robotics projects, DIY builds, and educational mechanical applications.
Related Products:
- Checkout Plastic Spur Gear 55mm 50 Teeth
Features:
- 60 teeth — highest tooth count in StemVolt’s spur gear lineup
- Higher tooth density than 80mm/56T for smoother mesh engagement
- 6mm bore fits standard DC motor and robot shaft sizes
- Blue plastic gear for robotics and DIY project builds
Technical Specifications:
| Specification | Details |
|---|---|
| Material | Plastic |
| Outer Diameter | 65mm |
| Number of Teeth | 60 Teeth |
| Motor Shaft Diameter | 6mm |
| Color | Blue |
Applications:
- Spur Gear used for 4:1 reduction robotics arm joint drive build
- Use robot plastic spur gear 65mm for encoder step calculation
- DIY gearbox uses gears for projects for high tooth count stage
- Motorized wheel uses spur gear for robotics
Package Includes:
-
1 × Plastic Spur Gear 65mm 60 Teeth














Soundararajan Krishnaswamy –
No disappointment with the purchase
Swapan Kumar –
Delivered in 4 days as promised
Simranjit Singh Mann –
Purchased this plastic gear for a robotics project and was impressed by the build quality. Anti-static packing kept the product safe during transit, and the technical support team was helpful in answering project-related questions.
Uday Singh –
Will order again for future projects