CTQ-Z120Y Crawler hydraulic drilling rig adopts new hydraulic technology thus results in low gas consumption, big rotary torque and conveniently variable-bit-shifts. The rig has compact structure ,and the slide support has a telescopic compensation. With slide - support on the ground,the machine can drill holes safely and firmly. In the use of hard rock drilling , Z120 rig rate is 2 times that of low air pressure rigs and it helps to reduce costs and to improve efficiency powerfully in construction units The drilling rig is mainly suitable for rock blasting hole drilling in open mining, water conservancy, power plants, roads ect. technical parameter G140Y CTQ- Z120Y CTQ D100Y D100YA/A2 Work air pressure (Mpa) 1.05?.46 0.7-1.6 0.5?.7 0.5?.7 Consumption air (M3/min) 10?1 10?2 7?0 7?0 Borehole diameter (mm) 105?65 90--130 90-130 90?30 Borehole depth (m) Level 30 Down 20 Level 30 Down 25 30 30 Once advance trip (mm) 4000 3000 2 2 Drill rod length (mm_ 3000 Drill rod diameter (mm) 76 60 Propeller compensate length (mm) 1200 1020 Maximum lifting capacity (N) ≥25000 18000 Guide tilt degree Up45 down60 Up and down 100 Up and down 100 Up and down 100 Guide swing degree Left50 Right35 Left 90right 45 Left 35 right 10 Left 35 right 10 Drill boom tilt degree Up 55 down 15 Up and down 70 Drill boom swing degree Left 45 Right 45 Left 45 Right 45 Sloping climbing ability (? 25 30 30 guide compensate length 900 900 Chassic ground clearance (mm) 254 250 250 250 Speed (km/h) (km/h) 2 2 Gyrus machine rotational speed (rpm) 0?2 0?0 Gyrus moment of torque (rpm) 2520 2000 Mainframe power (kw) 56 33 25 (A) 20 (A2) 28 Apply rock (f) 6?0 6?0 6--20 6--20 Complete machine weight (kg) 5300 4600 2.8T 2.8T Overall dimensions (mm) 3140*2210*1470 5200*2030*2300 4100*2030*2020 4100*2030*2020 The highest level of drilling hole (mm) 3370 The lower level of drilling hole (mm) 254 Impacting frequency (r/min) 950-1500 840 840