I agree with Deejay, it is unwise if not impractical to lift an SB 45 without using a hoist. When I set up my machine shop I made a little die truck because I had no intention of carrying the 12" rotary table around to put it on the milling machine, and I could foresee a time when I would no longer want to carry the 14" chuck to the lathe. And both of those items are stored at the height they'll be used at, they aren't lifted into position. If you are fairly fit you might lift rotary mowers onto the bench by hand (I do, but I complain a bit if they are Hondas) but when it gets over say 50kg that has to be lifted from floor level, in my opinion it is unprofessional to do it by hand. Realistically, I don't believe any well set up workshop would have people hand-lifting more than 35 kg as a normal operation. It isn't especially difficult to set up a pivoted beam over the bench, and sling a little ratchet hoist on the end of it. The hoist can be stored under the bench in between lifts. I don't do that currently, because I don't work on reel-type mowers, but if I ever take an interest in heavy mowers, I'll set up a hoist before I start work on one.
It isn't clever and masculine to hurt yourself lifting heavy weights off the floor, it is lazy and/or dumb.
