Kaishan low air pressure series DTH hammer


Brand Name: Kaishan
Minimum Order Quantity: 1 set
Packaging Details: Carton box/Wooden Case
Delivery Time: 7-10 days
Payment Terms: L/C, T/T, Western Union
Usage: Quarry, Mining, Water well drilling, Foundation piling, Tunneling ...

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The down-the-hole dth hammer is a device that uses compressed air as a power source and uses the reciprocating motion of the piston in the hammer to impact the drill bit to break the rock. The down-the-hole dth hammer is a working device of the down-the-hole drill. According to the working pressure of the dth hammer, it can be divided into low-pressure dth hammer (working pressure is 0.5~0.7Mpa), medium-pressure dth hammer (0.7~1.2Mpa) and high-pressure dth hammer(above 1.2Mpa); according to the gas distribution method and structural characteristics of the dth hammer, it can be divided into valved and valveless types; according to the formation of the central through hole of the down-the-hole dth hammer, it can be divided into ordinary down-the-hole dth hammer and reverse circulation down-the-hole dth hammer.

Application :

It is widely used in large-scale open-pit and underground ore mining, anchoring engineering, quarrying and rock drilling, water well geothermal mining, construction engineering rock drilling and large-scale engineering construction, etc.

Features

1 The operating air pressure are between 0.5Mpa and 0.7Mpa
2 Valveless hammers.
3 Simple structure, easy to assemble and to disassemble, long life span.
4 Higher impact frequency and faster drilling speed.
5 Lower air consumption and lower oil consumption. A hole can be drilled on the check valve to provide more efficient cuttings discharge.
6 Especially suitable for quarrying.

TechnicalDate
ModelL2.5  L3  L30  L40
Length (Without Bit)763mm  797mm  750mm  835mm
Weight(Without Bit)12kg  20kg  20kg  30.8kg
External Diameterφ66mm  φ80mm  φ80mm  φ98mm
Bit ShankL2.5**CIR80  L3**CIR90  L3**CIR90  L4**CIR110
Hole Rangeφ68-φ88mm  φ90-φ110mm  φ90-φ110mm  φ110-φ150mm
Connection Thread48x10  48x10  48x10  API 2 3/8"REG
Working Pressure0.5-0.7Mpa  0.5-0.7Mpa  0.5-0.7Mpa  0.5-0.7Mpa
Impact Rate at 17Bar15Hz  15Hz  15Hz  14Hz
Recommended Rotation Speed25-40 r/min  25-40 r/min  25-40 r/min  25-40 r/min
AirConsumption0.7Mpa:5m³/min  0.7Mpa:8m³/min  0.7Mpa:8m³/min  0.7Mpa:11m³/min
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