We, SUNGWON Heavy Machinery, have been manufacturing and supplying rock,
			
soil drilling equipment and tools of DTH Hammers, Hammer Bits and Auger
			
Machines in Korea.


28” DTH Hammer
SWH640L

| Hammer Model | |
|---|---|
| Bit Shank Type | SUNGWON | 
| Atlas | |
| Sandvik | |
| Numa | |
| Bit Dia. | mm | 
| Hammer Dia. | mm | 
| Cylinder Bore | mm | 
| Piston Stroke | mm | 
| Piston Weight | Kgs | 
| Length(Less Bit) | mm | 
| Weight(Less Bit) | Kgs | 
| Connection Type | |
| Air Consumption CFM(m3/min)  | 
							100 psi 7.0 Kg/cm2 | 
| 150 psi 10.5 Kg/cm2 | |
| 200 psi 14.0 Kg/cm2 | |
| 250 psi 17.6 Kg/cm2 | |
| 300 psi 21.0 Kg/cm2 | |
| 350 psi 24.1 Kg/cm2 | |
| SWH640L | 
|---|
| SWH640 | 
| 700~1175 | 
| 635 | 
| 475 | 
| 150 | 
| 732 | 
| 2025 | 
| 3820 | 
| Hexagonal Joint | 
| 2300(65) | 
| 3400(96.2) | 
| 4800(135.8) | 
| 5635(159.4) | 
| 6829(193.2) | 
| 7845(222) |