|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
JOSYM |
|
|
Concentric Overburden Drilling System |
|
|
|
|
|
You can pull out the pilot bit by rotating the rod, clockwise in case
of drifter |
|
|
and anti-clockwise in case of DTH Hammer, and continue to drill
through |
|
|
the ringbit with a conventional bit in solid formation. |
|
|
|
|
|
|
|
|
|
For Drifter(=Top Hammer) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Assembled Set |
|
|
|
|
|
|
Click for the components |
|
|
|
|
|
|
|
|
|
DIMENSIONS |
|
|
|
Model |
Casing OD |
Max Casing Thickness |
Ring Bit OD |
Ring Bit ID |
Pilot Bit OD |
Drifter Thread |
|
|
|
|
JOSYM 54D |
76.2mm |
6mm |
85mm |
54mm |
53mm |
T25,T32 |
|
|
JOSYM 68D |
89.1mm |
6mm |
98mm |
68mm |
67mm |
T32 |
|
|
JOSYM 74D |
101.6mm |
5.6mm |
109mm |
74mm |
72mm |
T32,T38 |
|
|
JOSYM 80D |
114.3mm |
8mm |
123mm |
80mm |
78mm |
T32,T38 |
|
|
JOSYM 105D |
133.4mm |
8mm |
142mm |
105mm |
103mm |
T38,T45 |
|
|
JOSYM 109D |
139.7mm |
6.6mm |
149mm |
109mm |
107mm |
T45,T51 |
|
|
JOSYM 116D |
152.4mm |
10mm |
162mm |
116mm |
114mm |
T51,T68 |
|
|
JOSYM 127D |
168.3mm |
10mm |
178mm |
127mm |
125mm |
T51,T68 |
|
|
In accordance with our policy of
constant improvement of the products, we reserve the right to amend design,
materials and specifications at any time without notice. |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
For DTH Hammer |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Assembled Set |
|
|
|
|
|
|
Click for the components |
|
|
|
|
|
DIMENSIONS |
|
|
|
Model |
Casing OD |
Max Casing Thickness |
Ring Bit OD |
Ring Bit ID |
Pilot Bit OD |
DTH Hammer |
|
|
|
|
JOSYM 68H |
89.1mm |
4mm |
98mm |
68mm |
67mm |
2" |
|
|
JOSYM 74H |
101.6mm |
5.6mm |
111mm |
74mm |
72mm |
2" |
|
|
JOSYM 80H |
114.3mm |
6mm |
125mm |
80mm |
78mm |
3" - 3.5" |
|
|
JOSYM 93H |
127mm |
10mm |
138mm |
93mm |
91mm |
3.5" |
|
|
JOSYM 98H |
133.4mm |
8mm |
145mm |
98mm |
96mm |
4" |
|
|
JOSYM 109H |
139.7mm |
8mm |
154mm |
109mm |
107mm |
4" |
|
|
JOSYM 116H |
152.4mm |
10mm |
165mm |
116mm |
114mm |
4"- 5" |
|
|
JOSYM 135H |
168.3mm |
5.5mm |
182mm |
135mm |
133mm |
5" |
|
|
JOSYM 146H |
177.8mm |
8mm |
192mm |
146mm |
144mm |
5" |
|
|
JOSYM 157H |
193.7mm |
9mm |
205mm |
157mm |
155mm |
6" |
|
|
JOSYM 176H |
219.1mm |
12.7mm |
234mm |
176mm |
174mm |
6" |
|
|
JOSYM 197H |
224.5mm |
12mm |
256mm |
197mm |
195mm |
6" - 8" |
|
|
JOSYM 210H |
254mm |
12.7mm |
268mm |
210mm |
208mm |
6" - 8" |
|
|
JOSYM 223H |
267mm |
12.7mm |
281mm |
223mm |
221mm |
8" |
|
|
JOSYM 233H |
273mm |
9.1mm |
286mm |
233mm |
231mm |
8" |
|
|
JOSYM 283H |
323.9mm |
9.3mm |
340mm |
283mm |
281mm |
8" - 12" |
|
|
JOSYM 292H |
335.6mm |
12.7mm |
350mm |
292mm |
290mm |
10" - 12" |
|
|
JOSYM 312H |
355.6mm |
12.7mm |
370mm |
312mm |
310mm |
10" - 12" |
|
|
JOSYM 360H |
406.4mm |
12.7mm |
420mm |
360mm |
358mm |
10" - 12" |
|
|
In accordance with our policy of
constant improvement of the products, we reserve the right to amend design,
materials and specifications at any time without notice. |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
HOME |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
