7degree Taper Drilling Rock Crown Button Bit and Drill String Steel Rod for Quarry Borehole in Granite Mining Site
Product Description
Different rock formations and rock drills require different taper angles. When drilling with high impact hydraulic rock drills in medium-hard to hard and abrasive rock formations, a wide taper angle is normally used. Taper angles of 11 and 12-degrees are normally used on modern drill rigs. For low impact rock drills and softer rock formations, a narrow taper angle of seven degrees is used. A 7-degree angle can also be used if bit spinning is a problem when using 11 and 12-degree equipment. In addition, a 4, 46 degree angle is ideal for soft rock when you're using pneumatic or hydraulic drill rigs - to prevent bits from spinning or becoming detached.
Part number Taper Angle Shank Length Weight
Mm mm kg
BT220600-66° (7° 11° 12° ) Hex 22 x 108 600 2.2
BT220800-66° (7° 11° 12° ) Hex 22 x 108 800 2.8
BT221000-66° (7° 11° 12° ) Hex 22 x 108 1000 3.4
BT221200-66° (7° 11° 12° ) Hex 22 x 108 1200 4
BT221400-66° (7° 11° 12° ) Hex 22 x 108 1400 4.5
BT221600-66° (7° 11° 12° ) Hex 22 x 108 1600 5.1
BT221800-66° (7° 11° 12° ) Hex 22 x 108 1800 5.7
BT222000-66° (7° 11° 12° ) Hex 22 x 108 2000 6.5
BT222200-66° (7° 11° 12° ) Hex 22 x 108 2200 7.2
BT222400-66° (7° 11° 12° ) Hex 22 x 108 2400 7.8
BT222600-66° (7° 11° 12° ) Hex 22 x 108 2600 8.3
BT222800-66° (7° 11° 12° ) Hex 22 x 108 2800 8.9
BT223000-66° (7° 11° 12° ) Hex 22 x 108 3000 9.5
BT223600-66° (7° 11° 12° ) Hex 22 x 108 3600 11.2
BT224000-66° (7° 11° 12° ) Hex 22 x 108 4000 12.7
BT224800-66° (7° 11° 12° ) Hex 22 x 108 4800 15.2
BT225600-66° (7° 11° 12° ) Hex 22 x 108 5600 18.4
BT226400-66° (7° 11° 12° ) Hex 22 x 108 6400 20
BT227200-66° (7° 11° 12° ) Hex 22 x 108 7200 22
BT228000-66° (7° 11° 12° ) Hex 22 x 108 8000 24.5
22mm 7 / 8 " hex rod. 108mm 4 1 / 4 " shank. |
| 4°46' taper |
| Length (mm) |
Part No. |
Weight (kg) |
| 800 |
578-0108,11 |
2.9 |
| 1600 |
578-0116,11 |
5.4 |
| 2000 |
578-0120,11 |
6.6 |
| 2200 |
578-0122,11 |
7.1 |
| 2400 |
578-0124,11 |
7.8 |
| 3200 |
578-0132,11 |
10.2 |
| 3500 |
578-0135,11 |
11.1 |
| 4000 |
578-0140,11 |
12.7 |
|
|
|
|
|
|
| 7° taper |
| Length (mm) |
Part No. |
Weight (kg) |
| 400 |
573-0104,11 |
1.7 |
| 800 |
573-0108,11 |
2.9 |
| 1830 |
573-0118,11 |
6 |
| 2000 |
573-0120,11 |
6.5 |
| 2435 |
573-0124,11 |
7.8 |
| 3050 |
573-0131,11 |
9.9 |
| 3200 |
573-0132,11 |
10.1 |
| 4000 |
573-0140,11 |
12.7 |
|
|
|
|
|
|
| 11° taper |
| Length (mm) |
Part No. |
Weight (kg) |
| 610 |
579-0106,11 |
2.4 |
| 1220 |
579-0112,11 |
4.2 |
| 1525 |
579-0115,11 |
5 |
| 1830 |
579-0118,11 |
6.1 |
| 2000 |
579-0120,11 |
6.6 |
| 2435 |
579-0124,11 |
7.9 |
| 2600 |
579-0126,11 |
8.4 |
| 3200 |
579-0132,11 |
10.3 |
| 3655 |
579-0137,11 |
11.7 |
| 4000 |
579-0140,11 |
12.8 |
| 4800 |
579-0148,11 |
15.1 |
| 5600 |
579-0156,11 |
17.5 |
| 6400 |
579-0164,11 |
20 |
| 7200 |
579-0172,11 |
22.4 |
| 8000 |
579-0180,11 |
24.9 |
|
|
|
|
|
|
| 12° taper |
| Length (mm) |
Part No. |
Weight (kg) |
| 1220 |
577-0106,11 |
2.3 |
| 1525 |
577-0112,11 |
4.2 |
| 1830 |
577-0115,11 |
5.1 |
| 2000 |
577-0118,11 |
6.1 |
| 2435 |
577-0120,11 |
6.6 |
| 3050 |
577-0124,11 |
7.9 |
| 3200 |
577-0131,11 |
9.8 |
| 3655 |
577-0132,11 |
10.2 |
| 3965 |
577-0137,11 |
11.7 |
| 4800 |
577-0140,11 |
12.8 |
| 5600 |
577-0148,11 |
15.2 |
| 6400 |
577-0156,11 |
18.4 |
| 7200 |
577-0164,11 |
20 |
| 8000 |
577-0172,11 |
22 |
|
577-0180,11 |
24.8 |
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