Product name: 4inch high air pressure DTH hammer with QL40 shank for blasting
Product category: Drilling rig accessories
Matched hammer: Hammer QL40
Connection thread: API 2 3/8 REG
Working pressure(bar): 10~25
Outer diameter(mm): 99
Weight(KGS): 40.7
Bit diameter recommend(mm): 115~130
High air pressure DTH hammer with QL40 shank details:
Rock drilling tools manufacturer KINGDRILLING DTH hammers are available in sizes from 2" to 33" for Down The Hole hammer bits are available in sizes from 2" to 48", with all shanks, multiple face, and with a variety of tungsten carbide button styles to suit a wide variety of drilling conditions and rock formation.
High air pressure DTH hammer with QL40 shank technical parameters:
| Model | OD (mm) | Hole range (mm) | Length (mm) | Connection
Thread | Working
pressure
(Mpa) | Air Consumption | Weight
(Kg) |
| MH40Q | 99 | 110~135 | 1070 | API2-3/8"REG | 1.2~2.0 | 1.0Mpa- 5m3/min | 1.8Mpa- 9m3/min | 2.4Mpa-14m3/min | 40 |
| MH50Q | 125 | 135~155 | 1090 | API2-3/8"REG/API2-7/8"IF/API3-1/2"REG | 1.3~2.3 | 1.0Mpa- 7m3/min | 1.8Mpa- 14m3/min | 2.4Mpa-19m3/min | 67 |
| MH60Q | 146 | 155~203 | 1183 | API3-1/2"REG | 1.5~2.5 | 1.0Mpa- 9m3/min | 1.8Mpa- 18m3/min | 2.4Mpa-26m3/min | 92 |
| MH80Q | 180 | 195~254 | 1330 | API4-1/2"REG | 1.5~3.0 | 1.0Mpa- 12m3/min | 1.8Mpa- 22m3/min | 2.4Mpa-28m3/min | 171 |
How to order?
Shank Type + Top Sub Thread + (With/Without Valve, if this parameter is optional)
FAQ:
1. What is a top hammer used for?
Top hammer drills are primarily used in mining, construction and quarrying of rock material. Top hammer drilling, combined with the “drill and blast” method, makes the whole excavation process extremely efficient.
2. What is top hammer?
In top hammer drilling, the activity is concentrated at the top of the drill string, above the hole, as a hammer transmits cyclical shock waves to the drill bit by applying a percussive force on the drill rods or tubes (With DTH drills, the hammer is placed down-the-hole at the bit)
3.How does DTH drilling work?
A down-the-hole drill, usually called DTH by most professionals, is basically a jackhammer screwed on the bottom of a drill string. The fast hammer action breaks hard rock into small cuttings and dust that are evacuated by a fluid (air, water or drilling mud).
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High Air Pressure QL40 DTH Mining Drill Bits Hammer 4inch For Blasting Images
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