SC90NK-QL DTH Hammer
Product Description
SC90NK-QL DTH hammer is SOLLROC "NK" series ("N" for no footvalve and "K" for high penetration hammer for mining) and widely used for varies applications, including construction drilling, geothermal drilling, quarry drilling.
1、Valveless air distribution ensures smooth working.
2、 Piston design and harden wear part ensure strong wear-resistance
3、 Minimize the energy loss, high penetration, lower air and oil consumption.
4、 Fewer internal parts minimize the maintain and replace the part requirements.
Model | SC90NK-QL |
Bit shank | QL80 no footvalve |
Top sub thread | API 4 1/2" REG |
Length (less bit) | 1363mm (54 in) |
External diameter | 203mm (8 in) |
Weight (less bit) | 230kg (508lbs) |
Impact rate at 17 bar | 25HZ |
Hole range | 216mm-275mm (8.5 in -10.8 in) |
Working pressure | 10-25 bar (145 - 363 PSI) |
Speed recommended | 20-45 rpm |
Pull force recommended | 19 KN |
Dia | Button configuration | Bit design | Weight | Part number | ||
Metric | Inch | Guage button | Front button | |||
216mm | 8 1/2" | Ф18mm*10 | Ф18mm*8, Ф16mm*6 | Concave face | 54.3 | SC90NK-QL-216CC |
219mm | 8 5/8" | Ф18mm*10 | Ф18mm*8, Ф16mm*6 | Concave face | 54.8 | SC90NK-QL-219CC |
229mm | 9" | Ф18mm*12 | Ф18mm*12, Ф16mm*7 | Concave face | 56.4 | SC90NK-QL-229CC |
235mm | 9 1/4" | Ф18mm*12 | Ф16mm*12, Ф16mm*7 | Concave face | 57.4 | SC90NK-QL-235CC |
245mm | 9 5/8" | Ф19mm*12 | Ф16mm*12, Ф16mm*8 | Concave face | 61.5 | SC90NK-QL-245CC |
254mm | 10" | Ф19mm*12 | Ф16mm*18, Ф18mm*8 | Concave face | 62 | SC90NK-QL-254CC |