The S20 concrete pump is a new model for Schwing, and it has a four-section Double Z boom with a total of 820 degrees of articulation with 270 degrees at both the third and fourth sections. It has unfolded height of 12 feet 7 inches. Overall reach of the boom is 63 feet 8 inches vertically and 51 feet 10 inches horizontally. Standard pump kit is the 2023-3 110/75 SC with output of 124 cubic yards per hour, and the standard truck used for the pump is a Kenworth T370 with 330 horsepower.
The twin-cylinder all-hydraulic unit sequences the pumping cylinders through the company’s M Rock Valve, handling mixes with up 2.5-inch aggregate and applying up to 1,095 psi on the concrete.
Manually extending outriggers lower hydraulically, applying 38 psi soil pressure with dunnage on the front and 15 psi on the rear. Spacing is 12 feet 8 inches in the front and 7 feet 3 inches in the rear.