Roschen Rock drilling tools manufacture various DTH hammers, DTH hammer bits are available in sizes from 2" to 20" for Down The Hole hammer bits are available in sizes from 2" to 36", with all shanks, multiple face, and with a variety of tungsten carbide button styles to suit a wide variety of drilling conditions and rock formation.
Roschen DTH hammer products offers a wide range of quality, versatile DTH hammers to interchangeable, or replace a number of leading industry manufacturers. Hammers are available for down hole and blast hole, water well, gas, mining applications and use in nearly all ground conditions. Most DTH hammers are designed for use with the industry's most common rock drill bits shank types such as DHD, QL, Cop, Mission, SD, Numa, BR.
Low/High Air Pressure drilling rock Down the Hole DTH Hammer
Description:
DTH Hammers
| ROSCHEN DTH Hammer Specifications |
| Bit Shank |
INCH |
Connection Thread |
External Diameter |
Bit Diameter |
Bit Diameter |
Length (less bit) |
Weight (less bit) |
Working Pressure |
Recommended Rotation Speed |
| Code No. |
|
|
mm |
mm |
inch |
MM |
KG |
MPA |
R/MIN |
| BR1 |
2 |
RD40 BOX |
54 |
64-76 |
2.5-3 |
760 |
10 |
0.7-1.75 |
25-40 |
| BR2 |
2 |
RD50 BOX |
62 |
70-90 |
2.8-3.5 |
880 |
14.5 |
0.7-1.75 |
25-40 |
| BR3 |
3 |
API 2 3/8"REG BOX |
82 |
90-110 |
3.5-4.3 |
889 |
26 |
0.7-1.75 |
25-40 |
| CIR90 |
3 |
T48*10*2 BOX |
80 |
85-110 |
3.3-4.3 |
800 |
19 |
0.5-0.7 |
25-40 |
| CIR110 |
4 |
API 2 3/8"REG BOX |
98 |
110-135 |
4.3-5.3 |
839 |
32 |
0.5-0.7 |
25-40 |
| CIR150 |
5 |
T75*10*2.5 BOX |
137 |
155-178 |
6.1-7 |
908 |
69 |
0.5-0.7 |
25-40 |
| COP32 |
3 |
API 2 3/8"REG BOX |
82 |
90-110 |
3.5-4.3 |
888 |
25 |
1-1.5 |
25-40 |
| COP44, DHD340 |
4 |
API 2 3/8"REG BOX |
99 |
110-135 |
4.3-5.3 |
1030 |
39 |
1-2.5 |
25-40 |
| COP54, DHD350 |
5 |
API 2 3/8"REG BOX |
125 |
135-155 |
5.3-6.1 |
1214 |
76.5 |
1-2.5 |
25-35 |
| COP54, DHD350 |
5 |
API 3 1/2"REG BOX |
125 |
135-155 |
5.3-6.1 |
1214 |
76.5 |
1-2.5 |
25-35 |
| COP64, DHD360 |
6 |
API 3 1/2"REG BOX |
142 |
155-190 |
6.1-7.5 |
1248 |
100 |
1-2.5 |
20-30 |
| COP84, DHD380 |
8 |
API 4 1/2"REG BOX |
180 |
195-254 |
7.7-10 |
1492 |
188 |
1-2.5 |
20-30 |
| DHD3.5 |
3 |
API 2 3/8"REG BOX |
82 |
90-110 |
3.5-4.3 |
930 |
25 |
1-1.5 |
25-40 |
| DHD1120 |
12 |
API 6 5/8"REG BOX |
275 |
305-445 |
12-17.5 |
1900 |
480 |
1-2.5 |
15-25 |
| IR3.5 |
3 |
API 2 3/8"REG BOX |
82 |
90-110 |
3.5-4.3 |
888 |
25 |
1-1.5 |
25-40 |
| NUMA100 |
10 |
API 6 5/8"REG BOX |
226 |
254-311 |
10-12.2 |
1510 |
288 |
1-2.5 |
15-25 |
| NUMA120 |
12 |
API 6 5/8"REG BOX |
275 |
305-445 |
12-17.5 |
1900 |
485 |
1-2.5 |
15-25 |
| QL40 |
4 |
API 2 3/8"REG BOX |
99 |
110-135 |
4.3-5.3 |
1097 |
41 |
1-2.5 |
25-40 |
| QL50 |
5 |
API 3 1/2"REG BOX |
125 |
135-155 |
5.3-6.1 |
1156 |
73 |
1-2.5 |
25-35 |
| QL60 |
6 |
API 3 1/2"REG BOX |
146 |
155-190 |
6.1-7.5 |
1212 |
95 |
1-2.5 |
20-30 |
| QL80 |
8 |
API 4 1/2"REG BOX |
180 |
195-254 |
7.7-10 |
1465 |
182 |
1-2.5 |
15-25 |
| SD4 |
4 |
API 2 3/8"REG BOX |
99 |
110-135 |
4.3-5.3 |
1084 |
40.5 |
1-2.5 |
25-40 |
| SD5 |
5 |
API 3 1/2"REG BOX |
125 |
135-155 |
5.3-6.1 |
1175 |
72.5 |
1-2.5 |
25-35 |
| SD6 |
6 |
API 3 1/2"REG BOX |
142 |
155-190 |
6.1-7.5 |
1261 |
100 |
1-2.5 |
20-30 |
| SD8 |
8 |
API 4 1/2"REG BOX |
180 |
195-254 |
7.7-10 |
1463 |
192 |
1-2.5 |
15-25 |
| SD10 |
10 |
API 4 1/2"REG BOX |
226 |
254-311 |
10-12.2 |
1502 |
290 |
1-2.5 |
15-25 |
| SD10 |
10 |
API 6 5/8"REG BOX |
226 |
254-311 |
10-12.2 |
1502 |
290 |
1-2.5 |
15-25 |
| SD12 |
12 |
API 6 5/8"REG BOX |
275 |
305-445 |
12-17.5 |
1880 |
487 |
1-2.5 |
15-25 |
| Remarks: Any special specifications are against requirements |
Advantages:
Compared with other brands, our advantages are bellowing:
1. Our products can match over 135% against the original products
2. Price are competitive against the famous brands and best quality against the small factory
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