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Pair of black 90×10 mm wheels with horizontal-tread silicone tires, press-fit for 3 mm D shafts

Pololu

Pololu 90×10 mm Wheel Pair Black

SKU CH-WDN3-MNBTX

Pair of 90×10 mm black wheels with silicone tires, press-fit for 3 mm D-shafts and drilled for universal hubs

  • Product typeWheel & Tire Hardware
  • Press-fits securely onto 3 mm D output shafts
  • 90 mm diameter with 10 mm width for stable rolling
  • Horizontal tread silicone tires boost traction on smooth surfaces
  • Pair includes two black wheels and two matching tires
  • Six #4/M3 mounting holes fit universal hubs for larger motors

90 mm Wheels for Robotics and RC

This pair of 90 mm diameter wheels is built for robotics projects and custom RC vehicles. They press-fit onto 3 mm D output shafts for a secure connection without fasteners. Six mounting holes accept #4 or M3 screws to work with universal mounting hubs. The spokes also include slots for #2 or M2 screws to attach accessories or encoder parts.

Low Weight and Press-Fit Mounting

Each wheel with its silicone tire weighs 0.8 oz keeping rotating mass low for small gearmotors. The press-fit design eliminates set screws that can loosen under vibration. Silicone tires with horizontal treads provide traction on smooth surfaces without adding noticeable drag. No active cooling or power draw is involved as these are passive mechanical parts.

Compatible With Micro and Mini Gearmotors

The wheels mount directly to Pololu micro metal gearmotors and mini plastic gearmotors via the 3 mm D shaft. Universal mounting hubs extend compatibility to larger metal gearmotors and stepper motors using the six #4 or M3 holes. Builders needing a different shaft size, a wider tread, or an integrated encoder disk will need a different wheel solution.

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Price $10.99
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Specifications

Product
Model nameRC Car & Truck
Product typeWheel & Tire Hardware

Questions about this item

How do I press-fit these 90 mm wheels onto a 3 mm D-shaft without cracking the hub?

Align the flat of the 3 mm D-shaft with the hub bore, support the wheel on a flat surface, and press evenly with a small arbor press or clamp until the hub seats fully; avoid hammering one side.

When should I replace the included black silicone tires?

Replace the tires when the horizontal treads wear smooth, the silicone hardens or cracks, or the tires no longer seat tightly on the 90×10 mm rims.

At what load do the six #4/M3 mounting holes become the limiting factor under sustained use?

The six mounting holes for #4 or M3 screws will shear or elongate before the 90 mm wheel rim fails when radial loads exceed the screw-clamp capacity of the chosen universal hub.

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