Central Mine Equipment Company CME Tracked Carrier Mounted Drills   45C/300   55/300   55LC/300 850X 850XR Standard Rotary Box Rotational Speed (max) 698 rpm 800 rpm 800 rpm 600 rpm 600 rpm Rotary Torque (max) 3,337 ft lbs [4,525 Nm] 7,700 ft lbs [10,440 Nm] 7,700 ft lbs [10,440 Nm] 15,100 ft lbs [20,535 Nm] 15,100 ft lbs [20,535 Nm] High Torque Rotary Box Rotational Speed (max) 492 rpm 665 rpm 665 rpm     Rotary Torque (max) 4,730 ft lbs [6,414 Nm] 9,400 ft lbs [12,744 Nm] 9,400 ft lbs [12,744 Nm]     High Speed Rotary Box Rotational Speed (max) 760 rpm         Rotary Torque (max) 3,063 ft lbs [4,153 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] 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] 28,275 lbs [12,826 kg] 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