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Reasonable price for Mining Rock Drill Button Bits - Concentric Casing System With Ring Bit – Spark Detail:
Application
Applied to over burden formation with complex topographic and geological conditions, such as gravel, fissured formation, boulder, landfill of construction etc.
Specification
| |
D |
|
h |
H |
C |
G |
|
|
| Specification |
O. D. of Casing Tube (mm) |
I.D. of Casing Tube(mm) |
Wall thickness of casing (mm) |
Max. O.D. of pilot bit (mm) |
Ring Bit O.D. (mm) |
Max. O.D. of Normal Bit (mm) |
Hammer Type |
Weight(kg) |
| TOP hammer type |
| P76/7-39 |
76 |
62 |
7 |
57 |
88 |
39 |
R32 |
3.2 |
| P89/8-58 |
89 |
73 |
8 |
70 |
100 |
58 |
T38 |
5.8 |
| P114/9-84 |
114 |
94 |
10 |
92 |
126 |
84 |
T45 |
7.5 |
| P127/10-93 |
127 |
107 |
10 |
105 |
142 |
93 |
T45 |
10 |
| P140/10-97 |
140 |
120 |
10 |
116 |
161 |
97 |
T45,T51 |
15 |
| DTH hammer type |
| P114/9-84 |
114 |
94 |
10 |
94 |
126 |
84 |
COP34/COP32/DHD3.5 |
12 |
| P127/10-93 |
127 |
107 |
10 |
105 |
142 |
93 |
COP34/COP32/DHD3.5 |
16 |
| P140/10-97 |
140 |
120 |
10 |
116 |
161 |
97 |
COP44/DHD340/M40/SD4/QL40 |
21 |
| P146/10-110 |
146 |
126 |
10 |
124 |
165 |
110 |
22 |
| P168/12.7-127 |
168 |
142.6 |
12.7 |
141 |
188 |
127 |
COP54/DHD350/M50/SD5/QL50 |
27 |
| P178/12.7-131 |
178 |
152.6 |
12.7 |
150 |
196 |
131 |
32.5 |
| P194/12.7-145 |
194 |
168.6 |
12.7 |
166 |
214 |
145 |
COP64/DHD360/M60/SD6/QL60 |
42.5 |
| P219/12.7-170 |
219 |
193.6 |
12.7 |
191 |
243 |
170 |
58 |
| P245/12.7-195 |
245 |
219.6 |
12.7 |
214 |
268 |
195 |
DHD380/COP84/SD8/QL80 |
78 |
| P254/12.7-203 |
254 |
228.6 |
12.7 |
224 |
276 |
203 |
84.5 |
| P273/12.7-223 |
273 |
247.6 |
12.7 |
241 |
305 |
223 |
100 |
| P325/12.7-276 |
325 |
299.6 |
12.7 |
292 |
350 |
276 |
135 |
| P406/12.7-350 |
406 |
380.6 |
12.7 |
377 |
442 |
350 |
DHD112/QL120/SD12/N120 |
280 |
| P508/12.7-416 |
508 |
482.6 |
12.7 |
478 |
545 |
416 |
522 |
| P560/12.7-475 |
560 |
534.6 |
12.7 |
528 |
595 |
475 |
NUMA180SD18/Numa180/TH18/TS18/TK18 |
620 |
| P610/12.7-513551 |
610 |
584.6 |
12.7 |
558 |
645 |
513 |
NUMA180 |
710 |
Operation Schematic Figure



Step1: The drilling in over burden formation is finished.
Step2: Reverse rotation of the hammer and pull the pilot bit out from the hole.
Step3: Replace the pilot bit with normal bit to continue drilling down.
Product Details


Product detail pictures:
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