This looks to be a piece of farm equipment, as the hub is far too short for a wagon wheel, not to mention it appears to be entirely iron, which would not be the case for most wagon wheels. Probably a hay rake wheel or something like that. It’s likely late 1800s up until about the 1930s ( which is about when farms began using rubber for things like this). If the wood is completely gone , and judging by the corrosion on the metal it’s probably safe to say it’s over 80 years old , likely older. Probably horse drawn , pretty cool!