High Pressure Mining Down The Hole Hammer Bits NUMA100 Rock Boring Bits

DTH drill bit with drilling performance is stable, easy to use grinding, and the price is reasonable and other factors by the user. Now high-pressure down-hole drilling, the current design of the face there are four main forms: the convex surface type, the end surface of the plane, the surface of the concave surface and the end of deep concave center. Carbide multi-choice ball, spring or ball and tooth teeth common to the cloth teeth. Drill alloy can be divided according to the shape of hemispherical teeth, tapered teeth, parabolic teeth and other types. Hemispherical teeth with high load capacity, good wear resistance, suitable for drilling hard, hard and abrasive rock; tapered teeth and parabolic teeth drilling speed, suitable for drilling hard and non-abrasive rocks. DTH drill bits can also be used with the teeth (gage, drilling teeth) with the ball, the core teeth (broken broken rock) with tapered teeth, parabolic teeth in the form of compound cloth teeth, can reach under a variety of types of rocks quickly The purpose of drilling.

Applications

It is mainly used in geological exploration, coal mine, water conservancy and hydropower, highway, railway, bridge, construction and so on.

Specifications

NUMA series	Head shape	Diameter mm	Number of vents	NO X button diamter			weight (KG)
				Toothed	Gauge	Front
NUMA100	Convex surface	275	2	Round Button	12XØ19	8XØ18+19XØ16
	Convex surface	305	3	Round Button	15XØ19	27XØ18+8XØ16
	Convex surface	350	4	Round Button	16XØ19	32XØ18+14XØ16
WE can design and manufacture according to customers requirement of the bit diameter,the NO.of air holes,carbide buttons and the face shape.