Changsha Adriller Machinery Co.,Ltd.
Changsha Adriller Machinery Co., Ltd. Professional drilling tools provider
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12 degree 35mm tapered cross-type short skirt insert For Granite Retract Skirt
Description:
Drop Center Bit
For High Penetration Rates In Soft To Medium Hard And Fissured Rock Formations, Low To Medium Air Pressures. Maximum Hole Deviation Control.
Convex Face
For High Penetration Rates m Soft To Medium-Hard With Low To Medium Air Pressures. It Is The Most Resistance To Steel Wash. And Many Reduce The Load And Wear On The Gauge Buttons. But Poor Hole Deviation Control.
Concave Face
The All-Round Application Bit Face Specifically For Medium Hard And Homogeneous Rock Formations. Good Hole Deviation Control And Good Fishing Capacity.
Double Gauge Face
This Kind Face Shape Is Suitable For Fast Penetration Rates In Medium To Hard Rock Formations. Designed For High Air Pressures And Good Resistance To Steel Wash Step Gauge Bit.
Drill bit top hammer application:
Mining, quarry, road building, well hole drilling, blasting, landslide prevention, dam reinforement, anchoring, geothermal, hydrology, etc.
Feature Advantage:
Harder, stronger steel body grade
The steel body grade for the Powerbit range is chosen with utmost care to ensure the right
hardness, strength and abrasion resistance.
Improved heat treatment gives at least 10 % better fatigue strength.
And, the stronger steel holds the buttons better, reducing the risk for pop-outs.
Specifications:
| Dia.(Mm) | Thread Connection | Buttons | Air Holes | Weight(Kg) | ||
| Gauge | Front | |||||
| 51 | r32 | 4×11 | 2×9 | 1 | 2 | 1.00 |
| 64 | r32 | 6×12 | 3×11 | 3 | 1 | 1.70 |
| 64 | t38 | 6×12 | 3×10 | 1 | 2 | 1.70 |
| 76 | t38 | 7×12 | 4×10 | 3 | 1 | 3.00 |
| 76 | t45 | 8×11 | 6×10 | 4 | - | 3.00 |
| 78 | t38 | 8×11 | 5×11 | 4 | - | 3.10 |
| 89 | r32 | 8×12 | 6×11 | 4 | - | 3.50 |
| 89 | r38 | 8×12 | 6×11 | 4 | - | 3.50 |
| 89 | t45 | 8×12 | 6×11 | 4 | - | 3.50 |
| 89 | t51 | 8×12 | 6×11 | 4 | - | 4.50 |
| 102 | t45 | 8×14 | 6×13 | 4 | - | 5.50 |
| 102 | t51 | 8×14 | 6×13 | 4 | - | 5.50 |
| 105 | r38 | 8×14 | 6×13 | 4 | - | 4.50 |
| 115 | r38 | 8×14 | 7×13 | 4 | - | 4.80 |
| 115 | t51 | 8×14 | 7×13 | 4 | - | 4.80 |
| 125 | r38 | 8×14 | 8×13 | 4 | - | 5.50 |
| 127 | t51 | 8×14 | 8×13 | 4 | - | 6.50 |