1, Equipped with Yuchai four-cylinder 58KW(KG420T) and Yuchai four-cylinder
73.5KW(KG420TH) engines to meet the national
requirements for emissions and environmental protection;
2, The hemmed crawler frame is used for four wheels and one belt, and the frame has the
function of automatic leveling;
3, High-pressure and large-displacement plunger motor runs, which improves working
pressure, climbing performance and
overall transition efficiency;
4, Optimize the luffing structure of drilling boom to meet the requirements of drilling
at various angles;
5, Optimize the layout of the console, upgrade the hydraulic system at the same time,
increase its system flow, improve
the rotation speed and improve drilling efficiency;
6, The new air filter is adopted to improve the service life of diesel engine, and the
double dust-catching oil cylinder
is adopted, which is more reliable when working.
Technical parameters
| Model |
KG420T |
KG420TH |
| Transport dimension (mm) |
5300x2250x2400 |
5300x2450x2400 |
| Weight (kg) |
5050 |
5350 |
| Rock hardness |
f=6-20 |
| Drilling diameter (mm) |
90 to 152 |
| Depth of economical drilling (m) |
25 |
| Roatory speed (rpm) |
0 to 90 |
| Rotary torque (Max) N.m |
3500 |
| Lifting force (KN) |
40 |
| Propulsion way |
Oil cylinder + roller chain |
| Feed stroke |
3175 mm |
| Travelling speed (km/h) |
0 to 2.5 |
| Climbing capacity |
≤30 degree |
| Ground clearance (mm) |
280 |
| Tilt angle of beam |
Down 135 degree, up 50 degree, total 185 degree |
| Swing angle of boom |
Left 100 degree, Right 45 degree, total 145 degree |
| Pitch angle of drill boom |
down 50 degree, up 25 degree, total 75 degree |
| Swing angle of drill boom |
Left 44 degree, Right 45 degree, total 89 degree |
| Leveling angle of track |
±10 degree |
| Compensation length of beam |
900 mm |
| Supporting power |
Yuchai YC4DK80-T302 |
Yuchai YC4DK100-T304 |
| Rated power |
58 KW |
73 KW |
| Rated revolving speed |
2200 rpm |
2200 rpm |
| DTH hammer |
4 inch |
| Drilling rod |
ф76*2 m + ф76*3 m |
| Air consumption |
13 to 20 cubic meter/min |
| Maximum height of horizontal hole |
2750 mm |
| Minimum height of horizontal hole |
350 mm |
