Changsha ENYU Engineering Equipments Co. Ltd.
Changsha ENYU Engineering Equipments Co. Ltd.
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BR3 DTH Hammers And Bits Without Valve , Middle Low Air Pressure Drilling Tools
Introduction:
BR3 dth hammer is a sort of valveless down-the-hole hammer, designed to efficiently operate at low air pressures and lmedium air pressures.
BR series bits are the best matching tools with BR3 dth hammer
Technical data:
| Length (less bit) | Weight(less bit) | External diameter | Bit shank | Hole range | Connection thread | ||
| 889mm | 26kg | ∅82mm | BR3 | ∅90-∅110 | API 2 3/8 Reg | ||
| Working Pressure | Impact rate at 1.4 Mpa | Recommended rotation speed | Air consumption | ||||
| 0.7Mpa | 1.0Mpa | 1.4Mpa | |||||
| 0.7-1.75Mpa | 25HZ | 25-40r/min | 4 m³/min6 | m³/min | 8 m³/min | ||
Feature:
1. BR2 dth hammer has higher impact frequency and faster drilling speed
2. The operating air pressures are between 0.7Mpa and 1.75Mpa
3. Especially suitable for quarrying
4. simple structure, long service life
