Original
By certification 
Jining Bafang Mining Machinery Co.,Ltd is one of the leading 50m electric tunnel drilling rig manufacturers and suppliers in China, welcome to buy cheap and low price 50m electric tunnel drilling rig made in China from our factory.
ZLJ-250 Rotary mine tunnel underground drilling machine
Description of ZLJ-250 Rotary mine tunnel underground drilling
The mine drilling machine mainly suitable for drilling gas drainage/discharge holes, water injection holes in coal bed, geological exploratory holes and various engineering holes. It's suitable for various coal beds and rock formation with the rock.
Technical parameters of drilling rig manufactures
|
Item |
Unit |
Technical Parameter |
|
ZLJ-250 | |||
Rated torque |
High speed |
250 |
|
Medium speed |
N·m |
150 |
|
Low speed |
85 |
||
Rated speed |
High speed |
r/min |
340 |
Medium speed |
192 |
||
Low speed |
. |
112 |
|
Rated pressure |
Mpa |
8 |
|
Max feed force |
kN |
9 |
|
Max pulling and lining force |
kN |
12 |
|
Drilling angle |
° |
0~360° |
|
Capacity of drum |
m |
26.3 |
|
Diameter of wire rope |
Mm |
8.8 |
|
Drill rod caliber |
mm |
42 |
|
Supply water pressure |
Mpa |
0.6~1.2 |
|
Power |
kW |
4 |
|
Voltage |
V |
380/660 |
|
Rated current |
A |
8.8/5.3 |
|
Dimensions |
mm |
1235×630 |
|
×1165 | |||
Weight |
Kg |
440 |
|
