DTH Rock Drill Bit QL50-146

Product Description

QL50-146mm Concave Face DTH Hammer Bit with Dome Carbide Inserts.

Shank type: QL40, QL50, QL60, QL80; and DTH hammer bits hole diameter: 3'', 4'', 5'', 6'', 8''(85mm-350mm).

COP shank DTH drill bit with flat face, 15 dome carbide buttons for blasting bore holes, water well drilling.

ROSCHEN is rock drilling tools manufacturer , we product high quality DTH Hammer Bits with QL shank type that are available in a wide range of sizes and with a number of custom design features for optimum performance in a rock formation.

Convex front:

Applications: soft to medium hard rock. Non abrasive formations. High penetration rate.
Typical formations: Limestone, hard limestone, shale.

Flat front:

Applications: Hard and abrasive formations, all-round.
Typical formations: Granite, hard lime-stone, basalt.

Concave front:

Applications: Medium hard to hard formations. Less abrasive, fractured formations. Excellent control over hole deviation.
Design feature: HD – larger gauge buttons. DGR – double (overlapping) gauge row. Only from 8".
Typical formations: Granite, hard limestone, basalt.

  QL shank type that are available in a wide range of sizes and with a number of custom design features for optimum performance in a rock formation. 

Concave Face of DTH drill bits

The all around application bit face specifically for medium hard and homogeneous rock formations. Good hole deviation control and good flushing capacity.

Dome/Hemispherical Buttons

Universal buttons for all rock formation, best suited to hardest and very abrasive rock formation