RT 56-SC and RT 82-SC smart trench rollers use an infrared signal, which uses line-of-sight control for safety. If the operator comes within 3 feet of the front or rear sensing eye with the control box, the unit will stop moving and vibrating. The RT 56-SC has a 22-inch-wide drum, and drum width on the RT 82-SC is 32 inches. Centrifugal force ranges from 7,000 to 14,000 pounds, and total applied force is 18,000 pounds.
By Heather Burlingame, Senior Production Editor | September 28, 2010