Tungsten steel drill bit (internal coolant)
Tungsten steel drill bit (internal coolant)
Tungsten steel drill bit (internal coolant)
Tungsten steel drill bit (internal coolant)

Guinea Tungsten steel drill bit (internal coolant)

● Solid carbide substrate, with high-performance coating technology, can greatly improve production efficiency; ● Unique edge treatment technology, strengthen the edge strength, improve the wear resistance and stability of the tool.

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GuineaHole processing series

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Product Description

Type No. Diameter Flute length Overall length Shank Dia Flutes
D Lc L d F

NHKB030

3

28

66

4

2

NHKB031

3.1

28

66

4

2

NHKB032

3.2

28

66

4

2

NHKB033

3.3

28

66

4

2

NHKB034

3.4

28

66

4

2

NHKB035

3.5

28

66

4

2

NHKB036

3.6

28

66

4

2

NHKB037

3.7

28

66

4

2

NHKB038

3.8

36

74

4

2

NHKB039

3.9

36

74

4

2

NHKB040

4

36

74

4

2

NHKB041

4.1

36

74

6

2

NHKB042

4.2

36

74

6

2

NHKB043

4.3

36

74

6

2

NHKB044

4.4

36

74

6

2

NHKB045

4.5

36

74

6

2

NHKB046

4.6

36

74

6

2

NHKB047

4.7

36

74

6

2

NHKB048

4.8

44

82

6

2

NHKB049

4.9

44

82

6

2

NHKB050

5

44

82

6

2

NHKB051

5.1

44

82

6

2

NHKB052

5.2

44

82

6

2

NHKB053

5.3

44

82

6

2

NHKB054

5.4

44

82

6

2

NHKB055

5.5

44

82

6

2

NHKB056

5.6

44

82

6

2

NHKB057

5.7

44

82

6

2

NHKB058

5.8

44

82

6

2

NHKB059

5.9

44

82

6

2

NHKB060

6

44

82

6

2

NHKB061

6.1

53

91

8

2

NHKB062

6.2

53

91

8

2

NHKB063

6.3

53

91

8

2

NHKB064

6.4

53

91

8

2

NHKB065

6.5

53

91

8

2

NHKB066

6.6

53

91

8

2

NHKB067

6.7

53

91

8

2

NHKB068

6.8

53

91

8

2

NHKB069

6.9

53

91

8

2

NHKB070

7

53

91

8

2

NHKB071

7.1

53

91

8

2

NHKB072

7.2

53

91

8

2

NHKB073

7.3

53

91

8

2

NHKB074

7.4

53

91

8

2

NHKB075

7.5

53

91

8

2

NHKB076

7.6

53

91

8

2

NHKB077

7.7

53

91

8

2

NHKB078

7.8

53

91

8

2

NHKB079

7.9

53

91

8

2

NHKB080

8

53

91

8

2

NHKB081

8.1

61

103

10

2

NHKB082

8.2

61

103

10

2

NHKB083

8.3

61

103

10

2

NHKB084

8.4

61

103

10

2

NHKB085

8.5

61

103

10

2

NHKB086

8.6

61

103

10

2

NHKB087

8.7

61

103

10

2

NHKB088

8.8

61

103

10

2

NHKB089

8.9

61

103

10

2

 

Cast iron,Carbon steel Alloy steel,Tool steel Tempered steel
Prehardened steel		 Heat-treated steel Heat-treated steel Stainless steel Aluminum alloy Titanium alloy Copper alloy

（~22HRC）

（25~35HRC）

（35~45HRC）

（45~55HRC）

（55~65HRC）

（~30HRC）

（~150HB）

（~32HRC）

C11000

S50C/HT250/Q235

P20/H13/D2

NAK80/718H/FDAC

SKD61/1.2343ESR

SKD11/SKH51

SUS304/316/316L

5052/6061/7075

Ti-6Al-4V

B152C11000
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