I am only finding the 250lb Racor model at the moment, but the steel platform itself weighs 76lbs, and since that is not used the lift capacity total is 326lbs. My framework is good quality pine, so is not very heavy. I used ceiling tiles for the surface to help mitigate sound. Then trains, track and scenery - I am not even close to the total weight capacity. My transformers are on a separate rolling control stand connected by umbilicles, so that weight is not on the lift.
I am at work now, so cannot check the exact lift model. But here is a great description with pics of the 250lb model if you are curious:
http://www.bestgarageshelvings...l-1r-pro-heavy-lift/
I am very happy with the system, and am thinking about my "next" layout suspended similarly but with two additional cables, to support a 8' X 16' layout with access in the center. Still working on the current layout, so that is a daydream for the future.