The Barmac Rotopactor Vertical Shaft Impactor (VSI) consists of a feed tube, rotor, crushing chamber, a bearing cartridge and also a discharge chute. The rotor is driven through multi drive V belts from a 200KW electric motor. The rotor is spinning at approximately 1040rpm. The Barmac is named a rock ‘Shaper’ and not a rock crusher since the 2 major reduction techniques made use of by the Barmac are attrition by glancing blows with other rocks and abrasion as the rocks interact. Thus the concept with the Barmac VSI is rock on rock shaping.
Ormeau Barmac