The second rotating floor rides on top of the 50' in diameter first floor on 40, 8" bearings that each have a 50,000 pound capacity, a main bearing in the center of the elevator shaft carries 1,364,000 pounds and the drive wheels (two 16" x 3" wheels) are in pillow block bearings that carry 150,000 pounds each - that's a 3,664,000 pound capacity, the second rotating floor weighs 600,000 pounds. It is driven by a 1.5 horse power DC motor, it takes .8 hp to start and .75 hp to run the house in either direction anywhere from one revolution in 33 minutes up to one revolution in 24 hours, it can rotate in either direction as many times as one would want (it doesn't have to unwind). The motor drives the drive wheels through a 1564 to 1 dual worm gear transmission - very smoothly. – according to their website
Rotating Home.onlinecollegedegreee.blogspot.com These Buildings Can Actually Move by Rotating