Technical Specification: Drilling depth m 100 250 300 600 Drilling DI mm 300 200 150 75 Open hole DI mm 300 End hole DI mm 75 Drilling rod mm Φ60 Drilling angle 90°-65° Rotary Spindle Spindle forward speed r/min 30-1050 Spindle reverse speed r/min 29-137 Spindle stroke mm 560 Spindle inner diameter mm 96 Spindle lifting capacity KN 60 Main Winch ( drive hydraulic system) Single line lifting speed m/min 0-45 Hug floodgate belt width mm 90 Tightrope diameter mm 14 Hoist single line lifting capacity KN 40 Roller diameter mm 200 Roller cubic measure m 30 Mud pump Horizontal Triplex BW-250 mud pump Displacement L/min 250 Work pressure Mpa 7 Water inlet caliber mm 75 Water to exit caliber mm 50 Gear Oil pump Duplex gear oil pump CBF-F63/25 Front displacement,pressure 63mL/r 20Mpa Behind displacement,pressure 25mL/r 20Mpa Drilling rig Power Diesel engine Hp 4100# 40HP Electric motor KW Y180L-4 22KW