Also based in Harrisburg, Pennsylvania; Bob Stewart started a road building machinery distribution company in 1947. The sales of asphalt pavers, compaction equipment, earthmoving machinery, refuse bodies and street sweepers fueled the growth of this division. Today, the Stewart division concentrates on providing specialty wear item solutions for the construction and mining industries.
In 2004, a separate company was formed to design and manufacture chassis mounted mechanical broom street sweeping equipment, Stewrt-Amos. Stewart-Amos Sweeper Co. combined the talents in engineering, fabrication, and manufacturing from the Equipment Co. with the capabilities of sweeper specific personnel brought on board to spearhead the product line.