The Plastic Pulley Wheel Small 25mm has a 25mm outer diameter, 2mm bore diameter, and 6mm width in plastic construction, designed for DC toy motor and miniature motor belt drive applications. This pulley wheel’s 2mm bore is the defining specification that sets it apart from every other pulley in StemVolt’s lineup — while all other pulleys have 6mm bores suited for standard hobby motor shafts, this 2mm bore mounts directly on the miniature output shafts of small 130-type toy DC motors, coreless micro motors, and similar small-shaft motor types without requiring adapters.
In a belt drive system, this small pulley wheels 25mm diameter determines the speed and torque relationship with the driven pulley — as the smaller driving pulley, it produces a speed reduction when paired with a larger driven pulley, with the output speed ratio equal to the driving-to-driven diameter ratio. This pulley wheel for robotics serves as the motor-side driving element in a two-pulley belt transmission, and its compact 25mm size means it generates relatively high output shaft speed for a given motor RPM when paired with a similar-sized driven pulley.
the 2mm bore of this pulley wheel for toy motor use means it fits only motors with 2mm output shafts — the 3V-6V 22mm DC motor and other common hobby DC motors with 2mm shafts are compatible, but any motor with a larger shaft requires a different bore size. Available from StemVolt, offering quality robotics parts and DIY kits at competitive prices.
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Features:
- 2mm bore fits miniature toy motor shafts directly without adapters
- 25mm diameter driving pulley for compact belt transmission builds
- 6mm width suits narrow-format belt drive mechanism spaces
- Lightweight plastic for small motor and toy robot applications
Technical Specifications:
Applications:
- Toy Motor Pulley used for 130-type DC motor belt drive build
- College project uses pulley wheel for toy motor diameter ratio demo
- Science kit uses small pulley wheels for miniature belt model
- DIY toy uses pulley wheel for dc motor for compact drive mechanism
- Micro robot uses 25mm toy motor pulley for small shaft belt drive
Package Includes:
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1 × Plastic Pulley Wheel Small 25mm
Manpreet Singh –
Will order again for future projects
Rohit SSharma –
Online payment was easy
Aditya Singh –
Received on time
Biswajit Roy –
This pulley wheel worked perfectly with my DC toy motor setup. It arrived carefully packed, matched the product description exactly, and proved to be a useful component for robotics and DIY mechanical projects.
Venkatraman Srinivasan –
Exactly as described