Without an axle or axles.

Furnished with cogs; having cog-wheels.

Of a wheel: Having or provided with spokes.

Having a sole or soles (of a specified kind). Chiefly as the second element in various parasynthetic combinations. Of a waterwheel.

equipped with sprockets (sense 2a) or sprocket holes.

(un-, prefix1 affix 3.)

Made or provided with spokes.

Having a vane or vanes, esp. (in combinations) of a specified type.

That does not employ or require a sprocket (sprocket, n. 2b) or sprocket holes.

having no spindle or spindles.

Without a hub.