In recent times, the demand for deep-underground bedrock work with large-diameter and bearing capacity has been increasing in mountainous areas, in downtown areas and near the sea. The basic mechanical operation of the Doughnut Auger Machine involves the inner shaft rod turning clockwise, while the outer shaft casing turns anticlockwise. When the inner shaft rod and hammer part excavate inside the casing, the outer casing also rotates and blocks the surrounding frictional force, smoothening excavation and extraction.
This is a large-diameter excavation method with an excavation diameter of 600~1,500mm targeting obstacles. The excavation capacity is far better than the Reverse Circulation Drilled Method (RCD) even in stone strata and bedrock strata. Treatment of slimes is good too.
Specification
SW-200PD-1
SW-200PD-2
SW-240PD-1
SW-240PD-2
Motor
75KwX8pX2
75KwX4/8pX2
90KwX8pX2
90KwX4/8pX2
Rotation
IN
4.4
4.7
5
8.8/4.4
4.4
4.7
5
8.8/4.4
Speed
OUT
1.7
1.8
1.9
3.4/1.7
1.7
1.8
1.9
3.4/1.7
Rated
IN
32,500
30,500
28,640
16,250/32,500
39,000
36,500
34,300
19,500/39,000
Torque
OUT
84,200
79,500
75,400
42,100/84,200
101,000
95,400
90,400
50,500/101,000
Power Supply
AC 220V(380V)X60HzX3P
Weight
14,000
14,500
15,500
16,000
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