Used Gundlach 30" Diameter Double Roll Crusher | Machinery ... Gundlach Double Roll Crusher, 30" diameter X 40" long rolls. Includes Modular four-piece housing with maintenance doors along with flanged feed and discharge connections. 375 RPM operating speed. Rated for up to 115 STPH. Driven by 50 HP, 1200 RPM, 575V TEFC Motor. Very good condition.