The excavator is capable of digging to a depth of 16 feet 4 inches with a breakout force of 16,400 lbs. The vehicle chassis has been specially designed for the excavator.

PistenBully USA has more information

Earlier there was a post on the capabilities of these snow grooming machines.   In doing further research, the PistenBully footprint is light. Ground pressure for special applications can be as low as 50 gram/sq. cm ( 0.71 pounds per square inch).

Read More Here 

Tags: Low Ground Pressure, Pisten Bully, PistenBulley, PistenBully, Snow Groomer, SnowGroomer