Active Member
|
[China]
Address: Room 706, HONGFEI Building, No. 123 Yanshan Street, 410001 Changsha, Hunan, China
Contact name:Shi
Changsha ENYU Engineering Equipments Co. Ltd. |
|
Introduction:
An air distributing device in a top hammer controls a piston to move back and forth.
An impact device arranged in the front of the top hammer transfers the impact power to a down-the-hole bit to crush rocks.
Usually is equiped with DHD series bits, SD4 DTH hammer is designed to work efficiently at high air pressures pressures.
Technical data:
| Length (less bit) | Weight(less bit) | External diameter | Bit shank | Hole range | Connection thread | ||
| 1084mm | 40.5kg | ∅99mm | SD4 | ∅110-∅135 | API 2 3/8" Reg | ||
| Working Pressure | Impact rate at 1.7 Mpa | Recommended rotation speed | Air consumption | ||||
| 1.0Mpa | 1.8Mpa | 1.4Mpa | |||||
| 1.0-2.5Mpa | 27HZ | 25-40r/min | 6 m³/min | 10 m³/min | 15 m³/min | ||
Feature:
1. The piston is used simple design which can retain a long service life.
2. Using valveless air distribution that is more reliable.
3. The hammer is easy to assemble and disassemble.
4. Widely used in water well drilling.
