1.The brief introductions of ZLJ350 coal mine drilling rig
ZLJ series coal mine tunnel drilling rig is mainly used for exploring water, exploring coal,drawing out methane, water injection dust control. The rig can work in various kinds of angles  
This drill rig adopts mechanical drive, hydraulic feed with small size, light weight, The rig is reliable and convenient to operate.
2.The specifications of ZLJ350 coal mine drilling rig
Drilling diameter 50-113mm
Drill rod caliber 33.5mm-42mm
Non-coring bit 50-89mm
Core bit 56-89mm
Vertical rated speed 375/214/120 r/min
Vertical shaft torque rating 130/230 /400 n.m
Main shaft angle 0-360
Spindle stroke 400mm
System pressure rated 8mpa
Feed force 9kn
Elevating power 12kn
Winch lifting capacity 7.35kn
Drum capacity 26.8m
Wire rope diameter 8.85mm
Oil pump type YBC-12/125
Motor power 5.5kw
Dimension 1250*640*1265mm
Total weight 500kg