SC50NKS-DHD DTH Hammer No Footvalve
Product Description
SC50NKS-QL DTH hammer is SOLLROC "NKS" series hammer ( high penetration series, No footvalve and slim out cylinder) specialized in mine blast hole drilling.
It is a interim model between 4 inch and 5 inch hammer. It can work with smaller size bit like 4 3/4" (120mm) which regular 5 inch hammer can not work with.
SC50NKS-QL DTH hammer is proven by testing and using in many job sites for varies rock conditions. It is used for varies applications, including mining, exploration, water well, geothermal, construction drilling and civil engineering.
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 | SC50NKS-DHD |
Bit shank | DHD340A / COP44 / DHD 4 |
Top sub thread | API 2 3/8" REG |
Length (less bit) | 858mm (33.8 in) |
External diameter | 110mm (4.34 in) |
Weight (less bit) | 43.6kg (96lbs) |
Impact rate at 17 bar | 35HZ |
Hole range | 120mm-146mm (4.7 in - 5.7 in) |
Working pressure | 10-25 bar |
Speed recommended | 30-60 rpm |
Pull force recommended | 9.0 KN |
Dia | Button configuration | Bit design | Weight | Part number | ||
Metric | Inch | Gauge button | Front button | |||
120mm | 4 3/4" | Ф18mm*7 | Ф13mm*3,Ф14mm*4 | Convex face | 8.5 | SC50NKS-DHD-120CV |
125mm | 4 15/16" | Ф16mm*8 | Ф13mm*3,Ф14mm*4 | Convex face | 8.8 | SC50NKS-DHD-125CV |
127mm | 5" | Ф18mm*8 | Ф13mm*7 | Flat face | 8.9 | SC50NKS-DHD-127FF |
130mm | 5 1/8" | Ф18mm*8 | Ф14mm*7 | Flat face | 9.1 | SC50NKS-DHD-130FF |
135mm | 5 1/4" | Ф18mm*8 | Ф13mm*8 | Flat face | 9.5 | SC50NKS-DHD-135FF |
140mm | 5 1/2" | Ф18mm*8 | Ф14mm*7 | Flat face | 9.9 | SC50NKS-DHD-140FF |