Animated Fan help

I have a fan that I want to animate, a base mesh and a blades mesh, I want the blades to stay attached to the base but move in a circle like a fan. Ive Ive got it working but the fan does not stay attached to the base. How do I fix this. here is what I have so far

You need to make sure that when you import the fan blades you set their pivot inside your modelling program to be in the middle. That way, when you rotate them they stay in-place.