Shaanxi Hainaisen Petroleum Technology Co.,Ltd
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Button Bit
Button Bit

With professional and productive factory, HAINAISEN is one of the leading China button bit manufacturers. Welcome to wholesale button bit from us, we always have cheap products to offer you.

down hole  button bit


Bit Diameter

 

Carbide

Taper

Water

Part No.

Mm

inch

Width*Height

Hole

30

1 3/16

8-10*13.5-15

7

2

CH130-722

32

1 17/64

8-10*13.5-15

7

2

CH 132-722

34

1 11/32

8-10*13.5-15

7

2

CH 134-722

36

1 27/64

8-10*13.5-15

7

2

CH 136-722

38

1 1/2

8-10*13.5-15

7

2

CH 138-723

40

1 37/64

8-10*13.5-15

7

2

CH 140-723

42

1 21/32

8-10*13.5-15

7

2

CH 142-723

20

2 5/32

6*12

4

1

CH 220-415

22

5 5/64

6*12

4

1

CH 222-415

24

1 5/16

8*13

4

2

CH 224-415

26

1 1/32

8-10*13.5-15

4

2

CH 226-415

28

1 7/64

8-10*13.5-15

6

2

CH 228-722

30

1 3/16

8-10*13.5-15

7

2

CH 230-722

32

1 17/64

8-10*13.5-15

7

2

CH 232-722

34

1 11/32

8-10*13.5-15

7

2

CH 234-722

36

1 27/64

8-10*13.5-15

7

2

CH 236-723

38

1 1/2

8-10*13.5-15

7

2

CH 238-723

40

1 37/64

8-10*13.5-15

7

2

CH 240-723

42

1 21/32

8-10*13.5-15

7

2

CH 242-723

50

1 31/32

8-10*13.5-15

7

2

CH 250-725

56

2 13/64

8-10*13.5-15

7

2

CH 256-725

60

2 23/64

8-10*13.5-15

7

2

CH 260-725


Specification:

Button bit-face design: Flat face, drop centre, tungsten carbide hemispherical and ballistic. Normal and retrac body.Couplings sleeve- manufactured with a middle stop to prevent walking along the thread. Include couplings sleeve. Shank adaptors - carburized and manufactured with tight tolerances and controlled straightness.

characteristic:

Button bits with 6tips, 7tips, 8tips 

Different rock formations and rock drills require different taper angles. When drilling with high impact hydraulic rock drills in medium-hard to hard and abrasive rock formations, a wide  angle is normally used. Taper angles of 11 and 12-degrees are always used on modern drill rigs. For low impact rock drills and softer rock formations, and a narrow taper angle of seven degrees is used of. A 7-degree angle can also be used if button bit spinning is a problem when using 11 and 12-degree equipment. In addition, a 4,46 degree angle is ideal for soft rock when you're using pneumatic or hydraulic drill rigs - to prevent bits from spinning or becoming detached.


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