Concave type PDC diamond non core drill bits for hard rock

    Application:

    Used in geological exploration drilling holes, gas drainage hole, grouting hole drilling, suitable for easy soft rock and medium hard rock.

Description:

Description:

1. PDC concave drill bit is mainly used for drilling soft -medium formation, such as mud stone, limestone, shale, sandstone and granite etc;

2. PDC concave drill bit is used for hydrogeological exploration borehole,  gas drainage hole, agent plug-hole and grouting borehole and applys for midium hard to hard rock formations.

3. PDC concave drill bit work under low drilling pressure, medium-low drive speed, big drainage 

 

Features:

1.With good design wing drill bit gauge, the material is cemented carbide, it is high hardness, wear resistance and good toughness. Under the 500 -1000 degree still remain the hardness. Choosing it can reduce your cost.

2. With three or five water holes, they can cool the pdc cutter and washout the head mudstone to reduce off the field.

3.With two1308 pdc cutter for the pillar and there are two middle water hole,its function is cool pdc cutter and blow the mudstone and preventing damage to the compact (pdc cutter).

Parameter

Specification

diameter(mm)

Size

Cutting Wings

Water Hole

Threading

Dia(mm)

Height(mm)

Pillar Quantity

Blade Quantity

Quantity

Quantity

56

56

115

2

3

4

6--8

Square Taper Lock

60

60

115

2

3

4

6--8

65

65

115

2

3

4--5

6--8

75

75

125

2

3--4

4--6

6--10

78

78

128

2

3--4

4--6

6--10

85

85

128

2

3--4

4--6

8--12

94

94

128

2

3--4

4--8

8--12

113

113

135

3

3--4

6--8

8--12

133

133

135

3

3--4

6--8

8--12

Ps: Special design is avilable upon your requirement.

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