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12mm Hex Hub (pair)
Price: $10.00
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Availability: Available
Machine Lab Item #: hexhub -

12mm hex hubs for the ML-30 / ML-50 motors.There is a 6 mm hole in one side with set screw for the ML-30 or ML-50 motor shaft and an 8-32 tapped hole in the other side to retain the wheel. Wheels and tires sold separately. Sold in pairs. ML-hexhub

Ball Caster with 1in. Plastic Ball
Price: $6.99
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Availability: In Stock
Pololu Item #: 956 -

This ball caster kit includes a black ABS housing, a 1in. diameter plastic ball, three dowel pin rollers, two spacers (1/16in. and 1/8in. thick), and two #2 screw sets.The total height of this ball caster is 1.1in. with no spacers. You can also adjust the height to 1.3in. by adding the spacers.The ball caster can be mounted to a chassis by the two screw sets included in the kit. The distance between the two screw holes is 0.69in.0-PL956

Ball Caster with 3/4in. Plastic Ball
Price: $5.99
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Availability: In Stock
Pololu Item #: 954 -

This ball caster kit includes a black ABS housing, a 3/4in. diameter plastic ball, three dowel pin rollers, two spacers (1/16in. and 1/8in. thick), and two #2 screw sets.The total height of this ball caster is 0.91in. with no spacers. You can also adjust the height to 1.1in. by adding the spacers.The ball caster can be mounted to a chassis by the two screw sets included in the kit. The distance between the two screw holes is 0.24in.0-PL954

Ball Caster with 3/8in. Plastic Ball
Price: $2.99
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Availability: In Stock
Pololu Item #: 950 -

This ball caster kit includes a black ABS housing, a 3/8in. diameter plastic ball, two spacers (1/16in. and 1/8in. thick), and two #2 screw sets.The total height of this ball caster is 0.4in. with no spacers. You can also adjust the height to 0.6in. by adding the spacers.The ball caster can be mounted to a chassis by the two screw sets included in the kit. The distance between the two screw holes is 0.53in.0-PL950

Pololu Wheel 70 x 8mm Pair - Black
Price: $6.99
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Availability: In Stock
Pololu Item #: 1425 -

These black plastic wheels press fit onto the 3mm D shafts of our mini and micro metal gearmotors to make a nice drive solution for small robots. The wheels have silicone tires and measure 70 mm (2.75") in diameter. Two additional mounting holes make it possible to use the wheel with several of our universal mounting hubs. The wheels are sold in pairs.Both our micro metal gearmotor bracket and extended micro metal gearmotor bracket work with this wheel.SpecificationsDiameter: 2.75" (70...

Replacement 3pi Ball Caster with 1/2in. Plastic Ball
Retail: $2.99
Price: $1.69
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Availability: In Stock
Pololu Item #: 957 -

This ball caster can be used as a replacement 3pi robot part or as a general-purpose ball caster. When mounted through a hole in a chassis that uses micro metal gearmotors and 32x7mm wheels, as on the 3pi, this ball caster is just the right height to keep the chassis level. The hole for this ball caster in the 3pi chassis has a diameter of 600 mils (0.6") and has a side that is flattened by 30 mils.Replacing the 3pi Ball CasterTo replace the ball caster on your 3pi, you will need to unscrew...

Servo Tire and Wheel - 2.63 x 0.35in. (pair)
Retail: $8.99
Price: $6.69
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Availability: Discontinued
Lynxmotion Item #: SRVT-01 -

Need servo wheels to fit your servos for a small robot or science project? These press fit directly onto Hitec servo splines.Diameter - 2.63"Width - 0.35"Motors - Any Hitec standard servo spline0-SRVT-01