DTH Bit-DHD340A-115

Rock drilling tools ProDrill has a comprehensive range of DTH hammer bits with DHD shanks type for a wide range of hole sizes, which are designed to match all conceivable applications for water well industries, mining and construction.

• Code No.:DHD340A-115
• Diameter:115mm
• Air Holes No.:2
• Gauge Buttons:7*14mm
• Face Buttons:5*13mm
• Weight:9.0kgs
• Carbide Design:Gauge Dome, Front Semi-Ballistic
• Face Design:Convex face

Shank types: DHD3.5, DHD340A, DHD350R, DHD360, DHD380.

DTH rock drill bits hole diameter: 3”, 4”, 5”, 6”, 8”(85mm-305mm)

Convex Face
A classic design for soft to medium hard rock formation which is not so abrasive. This design have very excellent penetration rate but poor in hole deviation if rocks are hard.
For high penetration rates in soft to medium-hard with low to medium air pressures. It is the most resistance to steel wash, and  may reduce the load and wear on the gauge buttons, but poor hole deviation control.

Dome/Hemispherical Buttons

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

Semi-Ballistic/Parabolic Buttons

Excellent penetration rate, but only suited to medium hard and not so very abrasive rock formation.

Ballistic Buttons

Similar to parabolic/semi-ballistic buttons, used for soft to medium hard and not so abrasive rock formation, excellent in penetration rate.

DHD shank DTH hammer bit with convex face, dome/semi-ballistic carbide buttons for blasting bore holes, water well drilling.

DHD shank DTH hammer bit with convex face, dome and ballistic carbide buttons for blasting bore holes, water well drilling.

PDFFor more details please watch PDF online: DTH hammer bits with DHD shanks Catalogue

Drawing of DHD340A-115