MADE IN USA UPS NEXT DAY AIR 30,000lb rigger set, Machine skate set, dolly set

Description

This is for four 12,000lb max, 10,000lbs working skates made in Marion Ohio!! Skates are derated as a set because often only thee skates have weight as no floor is perfectly flat and the weight moves from skate to skate as the machine is moved.
This skate uses thicker steel and larger bearings than our smaller skates.
We buy bearings in the hundreds and US steel in 20' sticks to keep our cost as low as possible.
The other skates on eBay are inferior Chinese steel and are completely subsidized by the Communist party.
Condition is New.
5" long
5.5" wide
1.725" high
Wheels are 1.60 OD
Much lower than any other model on ebay, in fact 3" lower making it super easy to put under machine. The base is threaded with 1/2-13  (course thread) to enable it to be bolted to machine and prevent skate from kicking out.
When bolted on skate can be steered by turning skate with crowbar and will not kick out
We move Bridgeports , Mills, lathes, radial drills and boring mills with these.
5 ton a skate uniform load, loads can spike above skate bearing rating on uneven floors so ensure floor is clear if debree and use sheet metal over large cracks in floor to prevent point loading wheels.