Description:

By popular demand, we have brought our experience from molding mini-sumo wheels into larger Sumo Wheels!

Our high-traction polyurethane is molded in four sizes around a machined and anodized aluminum rim.

Specifications:

Rim material: 6061 Aluminum, anodized black

Tire material: Available in Shore A20 or A45 polyurethane, professionally vacuum-degassed

(A20 recommended for Sumo robots up to 6kg (13lb). A45 is for tougher applications where damage to the wheels is expected.)

Coefficient of Friction (against smooth unpainted MDF wood): μ=1.75 (Silicone μ=1.30, Rubber μ=1.05)

Shaft bores: Sumo Wheel Hubs are available in 3mm, 4mm, 6mm, and 0.5in. Hubs purchased separately - if you want to use these wheels on motors with different shaft size, you only need to buy new hubs instead of all new wheels!

Hole pattern: Three through-holes for 4-40 screws are spaced equally on a 0.75in diameter circle.

Keyway: The rims have a 1/8" keyway and 0/5in bore, but you will still need a hub to secure the wheel to a shaft.

Features:

• The black anodized aluminum rims have a machined pair of rings and captive through-slots for keeping the tire tread in place.
• Tire tread composed of Shore A20 polyurethane makes these the highest traction wheels you can buy.
• The ShoreA45 tires are still smooth and grippy, but stiffer and harder to tear. They are meant for applications where the wheels might take damage (from rough terrain or other robots).
• Available in many different colors! All wheels are made to order, and colors may differ slightly between batches.
• Remember to order a matching number of Sumo Wheel Hubs in the bore diameter of your choice.

Kit include:

1 x FingerTech Urethane Sumo Wheel