Product name: 4inch high air pressure DTH drill hammer with SD4 shank for piling and foundation

Matched hammer: Hammer SD4

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 SD4 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.

Kingdrilling rock drill tools application:

1. mininig,quarry blasting hole borehole drilling

2. water well,depep hole well,oil and gas open hole drilling

3. foundation and piling drilling

4. mininig,quarry blasting hole borehole drilling

High air pressure DTH hammer with SD4 shank technical parameters:

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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