Tracked Wheel for BO Motor 65mm x 26mm (Yellow)

A standard-fit wheel for BO motor robots

This tracked wheel is built for BO (battery-operated) gear motors, the small geared DC motors widely used in hobby robotics and educational robot kits. It has a 65mm outer diameter and a 27mm section width, sized to fit comfortably under a typical small robot chassis while giving enough ground clearance to clear minor bumps on an indoor floor.

The wheel is rated for a 2.5kg loading capacity, which is more than enough for the vast majority of small two- or four-wheeled robot builds, and its 4mm centre shaft hole is sized to fit standard BO motor output shafts directly, without needing an adapter.

Build and fit

Construction pairs a black rubber tyre with a yellow plastic rim, a design chosen for a reasonable amount of grip on smooth indoor surfaces such as tile or laminate flooring, common in classroom and hobby robotics settings. At just 40 grams, the wheel adds very little extra load for the motor to spin, which matters on small robots running from modest battery packs.

Because it is built specifically for BO motors, fitting is straightforward: the wheel simply presses onto the motor's output shaft, without extra hardware needed.

Who it suits

Students, educators and hobbyists building small wheeled robots around standard BO gear motors will find this a straightforward, properly sized wheel option, particularly for line-following robots, simple robot cars and classroom robotics kits.

Care and mounting tips

Pressing the wheel onto a BO motor's shaft only needs a firm, even push rather than force from one side, since an uneven push can flex the thin shaft slightly and leave the wheel running with a slight wobble. If a robot chassis mounts the wheel close to a wall or obstacle sensor, check that the 27mm section width still leaves clearance once both wheels are fitted, since narrow chassis designs can crowd a wheel this width more than a slimmer alternative. The rubber tyre benefits from an occasional wipe if the robot runs on dusty classroom or workshop floors, since a dust-coated tyre loses some of its grip on smooth tile.

Questions buyers ask

What motor type does it fit?

Standard BO (battery-operated) gear motors with a matching shaft size.