Rock drill master KHYD155 7.5KW mine explosion two-speed gas exploration rig exploring water as a tool KHYD155 mine rock blast hole drilling system with an electric variable speed for rock. 1, the drilling rig has two speeds. 2, the need for drilling rig frame fit horizontally forward or upward tilt in any direction, such as drilling. 3, in order to extend the life and improve the drill operator's working conditions, the use of powder that is water wet drilling row. 4 rigs in operation, simply manipulate the hand wheel, can be self-propelled rig and fast return. Model KHYD155 motor rated output power (kW) 7.5 motor rated voltage (V) 380,660 motor rated frequency (Hz) 50 Motor rated current (A) 15.4 motor speed (r / min) 1440 Three-phase AC motor rated operation Continuous drilling speed (two kinds) (mm / min) 280/470 hole diameter (mm) 42-80 (rock) from 80 to 120 (coal) applicable rig rock hardness range (Platts hardness factor) f <10 rigs The maximum rock drilling depth (m) 25 largest coal drilling rig depth (m) 40-100 rig weight (kg) 155 using cable model specifications (user-supplied) (GB1170-74 "Mine rubber flexible cable") U-type 3x4 + 1x4 giants Jining Mining Machinery Co., rock drill main models without proof 2KW, 3KW no proof, 3KW explosion, 5.5KW no proof, 5.5KW proof, 5.5KW double speed, 7.5KW no explosion, 7.5KW explosion, 7.5KW double speed, 11KW, 15KW. Masters Jining Mining Machinery Co., Ltd. Business Manager: Zhang Jie LF Mobile: 15092666325 landline: 0537-3860909 QQ: 1982298222