The Plastic Spur Gear 25mm 15 Teeth is a yellow plastic spur gear with 25mm outer diameter, 15 teeth, 2mm tooth pitch, 12mm tooth height, and 6mm motor shaft bore. This spur gear is the smallest in StemVolt’s spur gear lineup — at 25mm diameter and 15 teeth it functions as a compact driving pinion gear in reduction gear trains, where its low tooth count means pairing it with a larger driven gear produces a significant speed reduction and torque multiplication at the output shaft.
This gear for robotics has a specified 2mm tooth pitch — matching the 72-tooth gear rack, which means this 15 teeth spur gear can serve dual purposes: as a standard rotary pinion in a spur gear train, or as the pinion in a rack-and-pinion linear motion mechanism paired with the 2mm pitch rack. In rack-and-pinion use, each full revolution of this gear advances the rack by 30mm of linear travel, a useful figure for servo or stepper-controlled linear positioning builds.
A 15 teeth and a small 25mm diameter, this plastic spur gear has lower torque capacity than larger gears — it suits light-load gear trains and positioning mechanisms, not high-force applications where tooth stripping under overload becomes a risk. Available from StemVolt, this unit is suitable for engineers students working on gear reduction and practical DIY robotics projects.
Related Products:
- Checkout Plastic Spur Gear 80mm 56 Teeth
Features:
- 2mm pitch matches 72T gear rack for rack-and-pinion linear builds
- 15 teeth driving pinion gives high reduction ratio with larger gears
- 6mm bore fits standard DC motor and hobby robot shaft sizes
- Compact 25mm diameter for tight gear train spaces
- Yellow plastic lightweight construction for DIY robot builds
Technical Specifications:
Applications:
- Spur Gear used for DC motor small pinion gear reduction train
- College project uses gear for robotics for pinion ratio demo
- India robot uses 15 teeth spur gear for 2mm rack-and-pinion drive
- DIY slider uses spur gear price for compact linear positioning build
- Gripper uses small spur gear 25mm for fine-pitch finger drive
Package Includes:
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1 × Plastic Spur Gear 25mm 15 Teeth
Navneet Pokra –
Express delivery service
Hitesh Puri –
Smooth delivery process
Kamal Chaudhary –
The gear teeth was a perfect fit for my science exhibition model. Protective packing, multiple payment options, and responsive customer support made the overall experience excellent.
Lokesh Gochar –
No hidden charges during checkout
Muralidharan Srinivasan –
Trusted store for project components
Raghav Raj –
First order satisfied
Amritpal Singh –
Value for money product