Screen’s geared exciters deliver needed force output

By |  February 25, 2014

Deister Machine Co.‘s BFO-11224-EX2 mine-duty screen is a 12-ft. x 24-ft. horizontal, single-deck unit that features Deister’s new EX Series of geared exciters, which are designed to create the force output required to drive today’s large screens. Geared exciters feature all-steel components; specially coated bearing inner races to deter wear on shafts; and shafts that are case-hardened and ground for minimal wear. Mechanisms are sealed to minimize oil contaminants and maximize bearing life. The seals ride on replaceable ceramic-coated spacers that minimize heat and increase seal life up to 10 times that of conventional steel spacers and seals, the company says. The unit features bolted construction, as well as the use of A572-Grade 50 steel, and is engineered with independent cross beams for ease of maintenance. The Deister mine-duty horizontal BFO Model Screen Series features a size range from 3-ft. x 4-ft. up to 12-ft. x 28-ft., and configurations of a single deck up to four decks. Models are either eccentric shaft-driven or geared exciter-driven. Deister also has the ability to customize a screen to suit exacting requirements such as existing footprints, restricted overhead space, high-volume processing and more, the company says. Deister is exhibiting at Central Hall 51572 at ConExpo-Con/Agg 2014.

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