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       E-mail: sales@quarryingtools.com


       Address: Unit 8001, Part A, Minnan Culture Town, 

       No.350, Changle Road, Huli, Xiamen China.361006


                   




Tapered Cross Rock Drill Bits for Small Hole Drilling

The cross rock drill bit can be used under any rock drilling condition; it's hardly impacted by the model of drill rig and the rock performance. Generally, chisel bit are mainly used for hard rock, cross bit and button bit are mainly used for hard to very hard and abrasive rock formation...

The cross rock drill bit can be used under any rock drilling condition; it's hardly impacted by the model of drill rig and the rock performance. Generally, chisel bit are mainly used for hard rock, cross bit and button bit are mainly used for hard to very hard and abrasive rock formation under any rock drilling condition, because of its comprehensive adaptability. Compared with taper chisel bits, taper cross bits have a better drilling performance because carbide tips on cross bits doubled.


Cross rock drill bits is mainly available for digging into mine laneway and blasting holes in all drilling works matched with the taper drill rod. For different rock, we choose the different alloy to extend the working life of the drill bits.


Drill bits are cutting tools used to create cylindrical holes, almost always of circular cross-section. Bits are held in a tool called drill, which rotates them and provides torque and axial force to create the hole. Our drill bit is suitable for various ground condition. It is especially efficient and fast when drilling in hard and medium-hard rock.  


Characteristic of Cross Bits:

(1)Cross bit taper angle: 4°, 4°46″,6°,7°,11°,12°

(2)Diameter: 24-55 mm 

(3)Socket inside diameter: 19 / 22 / 25(mm)

(4)Material and process: high quality alloy steel bar and tungsten carbides, through heat treatment.


Specification of Cross Drill Bits:

Description

Diameter

Length

Weight


Taper degree a=6 °,7°,11°,12°

Socket inside d=19,22,25mm

1.png

 

mm

mm

kg

28

71 80

0.19

29

71 80

0.2

30

50 67 71 80

0.3

32

50 67 71 80

0.3

33

71 80

0.32

34

67 71 80

0.34

35

67 71 80

0.35

36

71 80

0.36

38

67 71 80

0.42

40

71 80

0.43

41

71

0.45

42

69 80

0.46

44

80

0.47

45

80

0.5

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