VEVOR 4PCS Machinery Skate Dolly, 26455LBS/12T Industrial Machinery Mover, Heavy Duty Carbon Steel Machinery Moving Skate & 4 Carbon Steel Wheels and 360° Rotation Non-Slip Cap for Warehouse, Factory

These make moving machines much easier. They are not perfect, but for the price, they got the job done. We move an 8 ton and a 5 ton machine with these with no problems and the skates held up perfectly.

Moved 2 large heavy cnc machines with these, one 15,000 lbs the other 10,000, moved easily by myself you just have to adjust the angles a lot, also I made little cups out of steel and aluminum that sit in the little top hole on the rotating plate and accept the adjustable feet from the machine because it is very scary when one of these just rolls out from under the machine you’re moving and you’re inches away fromIt just toppling off, really takes the pucker factor out of it

These things are HEAVY! They come in a small wooden crate that weighed over 100lbs, delivered by UPS. It's pretty stunning that they can make this things in China, ship them to the USA on a cargo ship, truck them around the country, and deliver them to my door for the price they do. The quality of the wheel bearings and rotary plate seem fine for moderate use.This style of machine skate can be tricky to use depending on your application. It's not always easy to keep them in place under a machine, especially if the floor is uneven. Three tends to be more stable than four, but that won't work for every piece of equipment. I moved a 2000lb Bridgeport mill off of a pallet jack and into final position by myself with these skates, some wood blocks, and a toe jack. I'll be hanging on to them for future machinery moving tasks.

Works great, my floor was slightly uneven and kept losing contact on a wheel or 2. I added a 3/8" hard rubber pad on top of roller and problem solved.

These things are massive! Amazingly low price. Steel wheels roll easier than poly wheel on concrete but floor must be smooth and absolutely clean.