Central Mine Equipment Company CME-300 Carrier Mounted Drills   45C/300 55/300 55LC/300 850X Standard Rotary Box Rotational Speed (max) 698 rpm 690 rpm 690 rpm 600 rpm Rotary Torque (max) 3,337 ft lbs [4,525 Nm] 7,333 ft lbs [10,484 Nm] 7,333 ft lbs [10,484 Nm] 15,100 ft lbs [20,535 Nm] High Torque Rotary Box Rotational Speed (max) 492 rpm 569 rpm 569 rpm   Rotary Torque (max) 4,730 ft lbs [6,414 Nm] 9,366 ft lbs [12,698 Nm] 9,366 ft lbs [12,698 Nm]   High Speed Rotary Box Rotational Speed (max) 760 rpm 787 rpm 787 rpm   Rotary Torque (max) 3,063 ft lbs [4,153 Nm] 6,766 ft lbs [9,173 Nm] 6,766 ft lbs [9,173 Nm]   Feed System Pull Down Force 13,650 lbs [6,192 kg] 18,650 lbs [8,460 kg] 19,750 lbs [8,958 kg] 18,650 lbs [8,460 kg] Retract Force 19,600 lbs [8,891 kg] 28,275 lbs [12,826 kg] 27,615 lbs [12,525 kg] 28,275 lbs [12,826 kg] Feed Rate (max) per minute 80 ft [24.3 m] 53 ft [16.1 m] 65 ft [19.8 m] 58 lbs [17.6 m] Retract Rate (max) per minute 55 ft [16.7 m] 35 ft [10.6 m] 45 ft [13.7 m] 90 ft [27.4 m] Performance ratings are based on engineering specifications, calculations and accepted industry standards. Capacities may vary according to drilling conditions. CME reserves the right to amend these specifications at any time, without notice. To comment on or to report a problem with this page, please contact our Webmaster