By Katie Weiler | September 28, 2010

HypacModels C820C, C830C and C850C Series of single-drum vibratory rollers deliver improved compaction force, gradeability and tractive effort, according to the company. With operating weights of more than 11,000 pounds each, the C820C and C825C are smooth-drum units, while the C822C is a padfoot machine. All have working widths of 56.1 inches and a frequency of 2,040 vpm.