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Ball Caster Metal - 3/8"
Price: $5.65
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Availability: Stocked
Sparkfun Item #: ROB-08909 -

This ball caster kit from Pololu includes a black ABS housing, a 3/8" diameter metal ball, two spacers (1/16" and 1/8" thick), and two #2 screw sets. The total height of this ball caster is 0.4" with no spacers. You can also adjust the height 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 0.53".

Ball Caster Omni-Directional Metal
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Price: $11.96
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Availability: Back Order
Sparkfun Item #: ROB-00320 -

A metal caster used for omni-directional robots. Omni-what? Imagine a robot with the dual-motor gear box. The robot can pivot in one spot, but it must also allow the other wheels on the drive train to move or slide during a turn. This caster allows the robot to rotate and pivot in all directions - omni-directional - without the need for complex steering mechanisms. two complete casters Features: Can be configured for 6 different overall heights including 11, 16, 25, 27, 35, and 37mm Includes...

Ball Caster Plastic - 3/8"
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Price: $6.65
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Availability: Back Order
Sparkfun Item #: ROB-08908 -

This ball caster kit from Pololu includes a black ABS housing, a 3/8" diameter plastic ball, two spacers (1/16" and 1/8" thick), and two #2 screw sets. The total height of this ball caster is 0.4" with no spacers. You can also adjust the height 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 0.53"

Heavy Duty Wheel - 4"
Price: $12.88
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Availability: Out of Stock
Sparkfun Item #: ROB-12124 -

These heavy duty wheels have a diameter of 4” and a width of 1”. They have a hard inner plastic core and a smooth outer rubber tire. These wheels utilize the .77” hub pattern and are ideal for any larger robot you create. Actobotics is a robotics building system based around extruded aluminum channels, gears, precision shafts, and ball bearings. Thanks to the two standardized hole patterns, nearly all Actobotics components can be intuitively connected together. The wide range of components...

Mecanum Wheels - 65mm, LEGO Compatible (4 Pack)
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Price: $70.81
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Availability: Back Order
Sparkfun Item #: ROB-15536 -

Mecanum wheels allow your robot to not only travel forward and backward, but also sideways! Nine rollers set on a 45° rotational axis parallel to the main rotational axis of the wheel enable a broad a range of movement. Rotating all four wheels in the same direction causes forward or backward movement, rotating the wheels on one side in an opposite direction to those on the other side causes the vehicle to rotate, and rotating the wheels on one diagonal in the opposite direction to those on...

Precision Disc Wheel - 4" (Clear, 2 Pack)
Price: $11.04
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Availability: Out of Stock
Sparkfun Item #: ROB-12204 -

These clear precision disk wheels have an outer diameter of 4”, a width of 0.23”, and utilize the 0.77” hub pattern. These simple wheels are ideal for any light robot that needs a basic disc for simple movement, and use a removable rubber ring for traction. Actobotics is a robotics building system based around extruded aluminum channels, gears, precision shafts, and ball bearings. Thanks to the two standardized hole patterns, nearly all Actobotics components can be intuitively connected...

Rubber Ring - 1.65"ID x 1/8"W
Price: $2.23
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Availability: Out of Stock
Sparkfun Item #: ROB-12343 -

These lipped Rubber Rings have an inner diameter of 1.65", a width of 1/8", and a sturdy rubber sidewall. These rings can be used as a replacement for Precision Disk Wheels or can wrap around the outside edge of another flat disc to make the ring a simple tire. Features: ID - 1.65" Width - 1/8"

Skate Wheel Adapter - Shaft Connection
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Price: $10.81
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Availability: Stocked-NoBackOrder
Sparkfun Item #: ROB-12329 -

These skate wheel adaptors have a diameter of 1”, a width of 0.32”, and utilize the 0.77” hub pattern. These adaptors allow you to attach the 2.975” or 4.90” skate wheels to ¼” drive shafts. Actobotics is a robotics building system based around extruded aluminum channels, gears, precision shafts, and ball bearings. Thanks to the two standardized hole patterns, nearly all Actobotics components can be intuitively connected together. The wide range of components makes building complex...

Tank Treads
Price: $17.64
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Availability: Out of Stock
Sparkfun Item #: ROB-00321 -

Track set for tank treads. Use these treads to create your own tank setup. These work superbly with the Tamiya dual gear box. Comes with: 2 Tracks x 30 Links 2 Tracks x 10 Links 2 Tracks x 8 Links 2 Large Drive Sprockets 2 Large Idler Wheels 6 Large Road Wheels 10 Small Road Wheels Various Drive and Slip Shafts Various Screws and Hardware

Wheel - 65mm (Rubber Tire, Pair)
Price: $5.23
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Availability: Out of Stock
Sparkfun Item #: ROB-13259 -

These are a pair of basic, 65mm wheels with black rubber tires. These wheels are the same ones designed to fit onto DAGUs right angle gear motors utilized in the Magician Chassis and RedBot Kit. With these wheels you will be able to get almost any beginners robot project moving. These wheels are sold in packs of two. Documents: Product Video

Wheel 32x7mm
Price: $12.67
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Availability: Out of Stock
Sparkfun Item #: ROB-08901 -

This custom-designed plastic wheel from Pololu has a silicone tire measuring 1.26" (32 mm) in diameter and is designed to fit the output shafts on our micro and mini metal gearmotors as well as the Solarbotics metal gear motors. Both the Micro Metal Gearmotor Bracket and Extended Micro Metal Gearmotor Bracket will work with this wheel. Sold as two wheels.

Wheel 42x19mm
Price: $12.32
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Availability: Out of Stock
Sparkfun Item #: ROB-08899 -

This custom-designed plastic wheel from Pololu has a rubber tire measuring 1.65" (42 mm) in diameter and is designed to fit the output shafts on our micro and mini metal gearmotors as well as the Solarbotics metal gear motors. Teeth on the hub optionally allow a reflectance sensor to be used for encoder feedback. This rugged wheel is designed to fit securely on the output shafts of the micro and mini metal geramotors. These gearmotors should be mounted onto the side of the hub with the...