Welcome to Wooke Rock Drilling Tools Co., Ltd
TND-SD4 DTH Hammer
- Model: TND-SD4 – Compatibility Mission40
- Matched Bit Shank: SD4
- Thread Connection: API 2 3/8’’ REG
- Hole Range: 105-130mm
- Application: Mining site, Construction, Blasthole drilling, Water well drilling, Geothermal drilling…etc.
TND-SD4 DTH Hammer Product Features:
Compact High-Efficiency Rock Breaking
TND-SD4 DTH Hammer is designed for 110-130mm holes in medium-hard rock (limestone, sandstone).
Energy-Saving Operation
Low air consumption (5-15 m³/min) at 10-24 bar compatible with small/medium compressors.
Lightweight & Stable
Total weight ≤39 kg for easy transport in rugged terrain.
Short-stroke piston minimizes downhole deviation.
Rapid Maintenance
TND-SD4 DTH Hammer has a simple inner structure that enables part replacement with only 2 tools in <20 minutes.
All our TND Series Hammers have the following features:
TND® optimized structure design: Fewer air holes on internal cylinder, higher stiffness of air slot.
Standard API Thread.
Fine CNC machining tolerance and specifications coupled with quality assembly lead to great reliability and performance.
The piston case is made of superior alloy steel to provide the longest service life possible.
Heat-treated piston and internal cylinder guiding system is reasonably structured to achieve the highest efficiency and the largest impact power. The penetration speed is 10%-30% faster than other products of the same specification.
The multiple threads are CNC machined to achieve a higher level of accuracy, allowing ease of breakout and make-up of the Driver sub.
The Driver sub is heat-treated to maximize service life and maximize drill bit life.
Hammer front structure design: when pulling out the hammer, the last impact of the piston would fall on the step of the piston case, ensuring the safety of the driver sub-splines and the retainer ring.
Top Sub for Customer's Choice:
↑★ Top sub with cement carbide button (Alternative).
↑★ In order to increase the working life of the piston case when drilling very abrasive rocks. The Top sub is designed to be made up of three pieces of coupling, and only the wear-proof casing needs to be replaced timely.
4'' High Air Pressure DTH Hammer Working Performance:
10~25 bar (145-362 PSI) Working Pressure.
Top Sub Pin Thread: 2 3/8'' API REG
TND-SD4 DTH Hammer Part Details:
TND-SD4 DTH Hammer Overall Information:
