A direct drive system is provided for supporting and driving a rotor. The drive system includes a support body and a drive hub assembly, which are modularized respectively and assembled together to produce the drive system. The support body has a body wall extending between opposite ends. One of the ends has an interior surface and an exterior surface. The drive hub assembly is mounted onto the exterior surface of the end of the support body. The motor mounts so as to be position primarily in an interior of the support body.