Delivers high traction with Shore A20 polyurethane
Features a durable black anodized aluminum rim
Offers customizable colors and made-to-order production
Accommodates multiple shaft sizes with separate hubs
Includes 1/8" keyway for secure shaft attachment
The FingerTech Urethane Sumo Wheel 3.00" is a high-performance wheel designed for competitive sumo robots. It features a robust construction with a black anodized aluminum rim, which is machined to include rings and captive through-slots that ensure the tire tread remains securely in place. The tire is crafted from Shore A20 polyurethane, renowned for its exceptional traction, making it an ideal choice for sumo robots weighing up to 6kg. For applications where the wheels may encounter rough terrain or potential damage, a Shore A45 variant is available, offering a stiffer and more durable option.
This wheel is available in a variety of colors, with each unit being custom-made to order. The manufacturing process includes professional vacuum-degassing to enhance the material's performance. The wheel's design incorporates a 1/8" keyway and requires a hub to attach securely to a shaft, with hubs available in multiple bore diameters to accommodate different motor shaft sizes.
Note: Clean the tires with isopropyl alcohol wipes before each match to maintain optimal traction.
1x FingerTech Urethane Sumo Wheel 3.00"
Outer Diameter: 76.2 mm (3.00")
Width: 38.1 mm (1.5")
Inner Diameter: 44.45 mm (1.75")
Inner Depth: 29.97 mm (1.18")
Black anodized aluminum rims with machined rings and captive through-slots to secure tire tread
Tire tread made of Shore A20 polyurethane for high traction
Shore A45 tires are smooth, grippy, stiffer, and resistant to tearing
Rim material: 6061 Aluminum, anodized black
Tire material: Shore A20 or A45 polyurethane, professionally vacuum-degassed
Coefficient of Friction against smooth unpainted MDF wood: μ=1.75
Shaft bores: Sumo Wheel Hubs available in 3mm, 4mm, 6mm, and 0.5in
Hole pattern: Three through-holes for 4-40 screws on a 0.75in diameter circle
Keyway: 1/8" keyway and 0.5in bore; hub required to secure wheel to shaft
If you are not satisfied with a product purchased from the Site, you may request a return within 30 days from the delivery date, unless the product is listed under the Return Exceptions below or is subject to specific return conditions noted on the product page.
This return policy also applies, as a minimum standard, to products sold and fulfilled by third-party vendors through the Marketplace.
Returns under this policy concern non-defective products. In the case of a confirmed manufacturing defect, remedies are handled under the Warranty terms, at the Vendor's discretion. See the Warranty section.
Return Conditions
To qualify for a refund under the 30-day return policy, all of the following conditions must be met:
A valid Return Authorization (RA) number must be obtained prior to returning the product. Returns without an RA number will be refused.
The RA number is valid for 30 days. The returned item must be received within that period.
The RA number must be included with the return.
Products must be returned in unused, unmodified condition (e.g., no scratches, alterations, missing parts, or signs of installation/use) and in their original packaging, suitable for resale.
Shipping fees are non-refundable. Return shipping costs are the responsibility of the customer, except in cases of a product confirmed defective through RobotShop's troubleshooting process or of a verified shipping error by RobotShop.
Refunds are processed within 7 days after receipt and inspection of the returned item.
A $100 cleaning fee may apply to domestic robots returned in used or unclean condition.
A 20% restocking fee may apply to large-quantity returns of items ordered specifically for the customer from the manufacturer or not part of RobotShop's standard inventory.
Return Exceptions
The following products are not eligible for return or refund under this policy:
Used, damaged, or modified products — Items that show signs of use, wear, or alteration, making them unsuitable for resale.
Consumables — Use and wear-and-tear components, altered or depleted through use (e.g., batteries, belts, brushes, gears, filament, tires, disposable bags, lubricants, greases, waxes, etc.). Not eligible for return once opened or used.
Perishables — Goods liable to deteriorate or expire rapidly. Not eligible for return.
Sealed goods (health or hygiene) — Items sealed for health-protection or hygiene reasons (e.g., masks, gloves, odor-absorbing products). Not eligible for return once unsealed.
Build-it-yourself products and items requiring customer assembly — Including robots & kits, robot parts, and other products requiring assembly or soldering. Not eligible for return once assembled, soldered, or installed.
Digital Goods, Software, and Apps — Final sale only, due to licensing restrictions.
Clearance Items — Products identified as clearance or final sale, including end-of-life or discontinued items.
Custom-made, personalized, or special-order items — Products manufactured, configured, adapted, or built to the customer's own specifications and requirements.
On-Demand Items — Standard catalogue products not stocked by RobotShop and ordered specifically to fulfill a customer request.
While the same return policy applies, these orders require a separate contact process for returns.
RobotShop Fulfilled Orders → submit a support ticket from your account under My Support Tickets.
Marketplace Vendor Orders → submit a ticket from your account under My Marketplace Tickets to contact the vendor directly.
Note: Marketplace vendor products are normally labelled with SKUs starting with RM, and identified on the product page with the mention "Sold and fulfilled by [Vendor Name]".
