APXB42-11 42mm Diameter 7 Buttons Tapered Drill Bit
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APXB42-11 42mm Diameter 7 Buttons Tapered Drill Bit
Taper Degree
Diameter
Buttons
Flushing Holes Qty.
mm
inch
Gauge Buttons
Qty.*Dia.(mm)
Front Buttons
Qty.*Dia.(mm)
Type
Front
Side
11°
32
1 17/64
3*7
1*7
Spherical
Parabolic
Ballistic
Cone
1
1
32
1 17/64
4*8
2*8
2
1
32
1 17/64
5*8
2*8
1
2
38
1 1/2
3*9
1*8
1
1
38
1 1/2
3*9
2*7
1
1
38
1 1/2
5*8
2*8
1
1
40
1 9/16
3*9
1*9
1
1
42
1 11/16
3*9
1*9
3
1
42
1 11/16
3*10
2*9
1
1
42
1 11/16
4*9
2*8
2
1
42
1 11/16
5*10
2*8
1
1
Remark:
1.Tapered Degree usually is 11°, but we can manufacture 4.8°,6°,7°,11°,12°according to customer’s requirements.
2.Tapered Diameter usually is φ22, but we can manufacture φ23 or other Diameter according to customer’s requirements.
3.We can manufacture carbide button’s quantity and shape according to customer’s requirement.
Our Carbide Button Shape Selection
Spherical/Domed/Round Button
Spherical/Domed/Round Button are usually used as gauge buttons of DTH Bits, suitable for very abrasive and very hard formations.
Parabollic/Semi-Ballistic Button
Parabollic/Semi-Ballistic Button are usually used as gauge buttons and front buttons of DTH Bits,suitable for medium abrasive and hard formations.
Ballistic Button
Ballistic Button are usually used as front buttons of DTH Bits, suitable for medium abrasive and medium hard formations. They also can be used as gauge buttons if the rock is soft.
Conical/Cone/Sharp Button
Conical/Cone/Sharp Button are usually used as front buttons of DTH Bits for soft formations where fast penetration rates are possible and button breakage is minimal.