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Pololu item #:
1425
Brand:
Pololu
Status:
Active and Preferred
These black plastic wheels have silicone tires and measure 70 mm (2.75″) in diameter, and they press-fit onto 3mm D shafts, such as those on our micro metal gearmotors. Additionally, this wheel is compatible with several of our universal mounting hubs, which can serve as adapters for motors with different shafts. This product is a pair of wheels.
Alternatives available with variations in these parameter(s): size color Select variant…
Compare all products in Pololu Wheels and Tracks for 3mm D-Shafts or Pololu Wheels and Tracks or Romi Chassis Components.
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Pololu Wheel 70×8mm Pair – Black. |
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Parts included with Pololu Wheel 70×8mm Pair – Black. |
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Black Pololu Wheel 70×8mm on a Pololu Micro Metal Gearmotor. |
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Pololu Universal Mounting Hub for 4mm Shaft mounted to Pololu Wheel 70×8mm. |
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Pololu wheel 70×8mm on a Pololu 20D mm metal gearmotor. |
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Black Pololu Wheels with 90, 80, 70, 60, 40, and 32 mm diameters (other colors available). |
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Pololu Wheels with 90, 80, 70, and 60 mm diameters in three colors: blue, red, and yellow. |
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These plastic wheels with silicone tires are 8 mm (0.3″) wide and 70 mm (2.75″) in diameter, and they are designed to press-fit securely onto 3mm-diameter D shafts, such as those on our micro metal gearmotors and our 120:1 mini plastic gearmotor.
The wheels feature two mounting holes sized for #4 or M3 screws and spaced 12.7 mm (0.5″) apart. This spacing is compatible with several of our universal mounting hubs, which can serve as adapters between these wheels and the shafts on our larger metal gearmotors and stepper motors (see the table at the bottom of this page for information about which wheels are compatible with which universal mounting hubs). The pictures below show these wheels with a universal mounting hub for 4mm shafts installed so it can work with our 20D or 25D metal gearmotors.
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The slots in the five spokes fit #2 or M2 screws and allow additional accessories to be mounted to the wheel such as decorations or parts of an encoder system.
The included silicone tires, which feature horizontal treads for improved traction, are also available separately.
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Parts included with Pololu Wheel 70×8mm Pair – Black. |
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This is the black version of our 70×8mm wheel pair. These same-sized wheels are also available in red, yellow, blue, or white.
We have similar wheels available in different sizes and colors:
Alternatives available with variations in these parameter(s): size color Select variant…
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Black Pololu Wheels with 90, 80, 70, 60, 40, and 32 mm diameters (other colors available). |
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Pololu Wheels with 90, 80, 70, and 60 mm diameters in three colors: blue, red, and yellow. |
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These wheels are compatible with our Universal Mounting Hubs, which are available for different shaft sizes and mounting hole thread options, as shown in the table below. These mounting hubs can be used as adapters between these wheels and a variety of different motor shafts.
| Pololu Universal Mounting Hubs | |||||||||||||
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| for 3mm shafts | for 4mm shafts | for 5mm shafts | for 6mm shafts | for 1/4″ shafts | for 8mm shafts | ||||||||
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| M3 holes #4-40 holes #2-56 holes |
M3 holes #4-40 holes |
M3 holes #4-40 holes |
M3 holes #4-40 holes |
M3 holes #4-40 holes |
M3 holes |
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 Pololu Wheels for 3mm Shafts |
32×7mm | – | – | – | – | – | – | ||||||
| 40×7mm | – | – | – | – | – | – | |||||||
| 60×8mm | – | – | – | ||||||||||
| 70×8mm | – | – | – | ||||||||||
| 80×10mm | |||||||||||||
| 90×10mm | |||||||||||||
 Pololu Wheels for Servos |
40×7mm | – | – | – | – | – | – | ||||||
| 60×8mm | |||||||||||||
| 70×10mm | – | – | – | ||||||||||
| 90×10mm | – | – | – | ||||||||||
 Pololu Multi-Hub Wheels |
80×10mm | – | – | – | |||||||||
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| Size: | 70 x 8 mm |
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| Weight: | 0.5 oz1 |
| Shaft diameter: | 3 mm2 |
| Color: | black |
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This file contains dimension diagrams for the 32×7mm, 40×7mm, 60×8mm, 70×8mm, 80×10mm, and 90×10mm Pololu Wheels with 3mm D-hubs as well as the 80×10mm Pololu Multi-Hub Wheels.
This file contains 3D models (in the step file format) of the Pololu Wheels 70×8mm.
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