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SR250 Rotary Drilling Rig
·Machine with Max. drilling depth of 70m and Max. drilling diameter 2.5m is suitable for large size stake project construction.
·Super output torque of 285KN•m ensures construction accomplishment under different geological conditions.
· Diesel engine bears automatic accelerating and decelerating function,
fuel consumption being reduced by 5—10%
·The engine owns such advantages as low noise, less vibration, environment protection,
energy saving and waste discharge accords with EPACIII standards.
·Hydraulic system makes flux distribution to executive unit in accordance
with the needs so as to achieve the optimal match under various working conditions.
·Imported key parts such as Hydraulic Pump, Hydraulic Motor,
Hydraulic valve and Piping joints are introduced in well-known brand to assure high reliability of system.
·Advanced Roxroth Electronic Leveling System with automatic switching is introduced to keep vertical status of the mast under various operation circumstances, as well as to ensure perpendicularity requirement of the hole.
| Item |
Unit |
SR250 |
| Max. Drilling torque |
kN.m |
285 |
| Drilling speed |
rpm |
6～30 |
| Max. push |
kN |
180 |
| Max. pull |
kN |
256 |
| Stroke of crowd system |
mm |
5300 |
| Mast sidewards |
° |
±6 |
| Mast forwards |
° |
5 |
| Max. work slopeTD>
| ° |
2 |
| Security angle |
° |
10 |
| Chassis |
|
Caterpillar |
| Main winch pull force |
kN |
256 |
| Main winch rope diameter |
mm |
32 |
| Main winch Pull speed |
m/min |
63 |
| Auxiliary winch pull force |
kN |
110 |
| Auxiliary winch rope diameter |
mm |
20 |
| Auxiliary winch pull speed |
m/min |
70 |
| Max. drilling depth |
m |
70 |
| Max. drilling diameter |
mm |
2300（2500） |
| Overall width in drilling position |
mm |
4300 |
| Overall width in transport position |
mm |
3000 |
| Overall height in transport position |
mm |
3400 |
| Overall height in drilling position |
mm |
21525 |
| Width of crawler |
mm |
800 |
| Traction power |
kN |
510 |
| Standard Kelly bar |
|
ZG22M514（Φ440） |
| Kelly bar available |
|
ZG22M515（Φ440） |
| |
ZG22M515Ⅱ（Φ440） |
| |
ZG22M514Ⅱ（Φ440） |
| |
ZG22M513（Φ440） |
| |
ZG22M513Ⅱ（Φ440） |
| |
ZG22J413（Φ440） |
| Max. weight |
t |
70T(69 gross ton) |
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