Email: sales@prodrill.com.cn
Tel:0086-18959243380
Addr: Room 805 C1 Wanda Plaza, No.5 Jinzhong Road, Huli District, Xiamen, China
DTH Button Bits Bulroc2-90
- Diameter: 90mm
- Air Holes No.: 2
- Gauge Buttons: 6*14mm
- Face Buttons: 6*12mm
- Approx. Weight: 4.2KGS
- Bit Face Type: Convex face
- Carbide Design of DTH Buttons: Parabolic(Semi-Ballistic) / Hemispherical
Rock drilling tools factory ProDrill manufactures DTH Hammer Bits with BR shank type are available in a various range of sizes and with a number of custom design features for optimum performance in a rock formation, designed to match all conceivable applications for water well industries, stone quarrying, mining and construction. shank adaptor is the most important part of rock driling tools , which will decide rock drill\'s drilling efficiency and cost.
Shank type: BR2, BR3; and DTH drill bits hole diameter: 3", 4", 5", 6", 8"(85mm-350mm).
Convex Face
A classic design of rock drill bits 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.
Semi-Ballistic/Parabolic Buttons
Excellent penetration rate, but only suited to medium hard and not so very abrasive rock formation.
BR shank DTH drill bit with convex face, 12 semi-ballistic carbide buttons.
