Newly re-designed and manufactured, these beautifully machined aluminum hubs come with a generously thick rubber tyre for maximum traction (ideal for minisumo, etc..).

The tyre mounted on the hub measures in at 31.2mm (1.23in) diameter and overall width (including set-screw flange) of 17.03mm (0.67in) wide. The hub is drilled for a 3mm axle ideal for the GM12a-14a/18 series of gear motors! It's a nice, fat, beefy wheel ideal for small robots! Secure it to your motor shaft with the included 4-40 hex grub/setscrew.

Although you can simply install the motor from the outside, we designed it so you could be mounted internally to the hub. We've found that the internal cutout came back from manufacture a wee bit thick, but a bit of filing on the edges of the GM12a lets it fit right in. By hand-filing the edges down, you can fine-tune the installation so the brass edges of the gearbox act as alignment bushing points that assist in keeping the wheel spinning true.

Wheels are sold individualy and include a hub, tyre and grub screw.

Entire wheel assembly weighs 12 grams.