DBMMDe Bellis Magistrorum Militum (gaming)
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As conceived, the new DBMM 7050 machine will cut horseshoe shaped openings, with a flat floor, of 16.8-29 |m.sup.2~ in rock with compressive strengths up to approximately 300 MPa.
Based on these test results, many years of laboratory experiments and field statistics on cutter penetration, performance for the DBMM 7050 has been calculated to achieve the rates indicated in the figure in rock of varying compressive strength.
Atlas Copco DBMM 7050 Excavation height 4-4.96 m Excavation width 5-6.92 m Excavation area 16.8-29 |m.sup.2~ Cutter diameter 3 m Cutter wheel speed 14 rpm Cutter wheel power 700 kW Primary cutter 413 mm disc Nominal load/cutter 250 kN Face cutters 18 Tangential cutters 6, only along periphery Maximum swing angle 60|degrees~ Stroke length 750 mm Thrust force 4,500 kN Tramming turning radius 12 m Machine weight 160 t Unlike the other two units, the CM does not have a single cutting wheel.