2019-12-18 · Crusher Crusher speed 678-756 rpm (32-35.5 m/sec rotor tip speed) Number of aprons 1, 3 strike zones Number of blowbars 4 Direct Drive Impactor weight 7, 150kg (15,763 lbs) Closed side setting adjustment - Hydraulic rams, shim system, spring tension Apron adjustment to suite either Primary or Secondary crushing Hopper