高速钢麻花钻头

直径(mm)

dl

Ii

刃长(mm)

12

dl

Ii

h

Il

12

Ii

12

inch

(mm)

inch

(mm)

0.20

19

3

1.35

48

23

1/64

0.397

21

5

23/64

9.128

125

81

0.25

20

3.5

1.40

48

23

1/32

0.794

30

1'1

3/8

9.525

133

87

0.30

24

3.5

1.45

48

23

3/64

1.191

38

16

25/64

9.922

133

87

0.35

27

5.5

1.50

48

23

1/16

1.588

43

20

13/32

10.319

133

87

0.40

30

5.5

1.55

50

25

5/64

1.984

49

24

27/64

10.716

142

94

0.45

30

7.5

1.60

50

25

3/32

2.381

57

30

7/16

11.113

142

94

0.50

32

7.5

1.65

50

25

7/64

2.778

61

33

29/64

11.509

142

94

0.55

32

8.5

1.70

50

25

1/8

3.175

65

36

15/32

11.906

142

101

0.60

34

8.5

1.75

52

28

9/64

3.512

70

39

31/64

12.303

151

101

0.65

34

10

1.80

52

28

5/32

3.969

75

43

1/2

12.700

151

101

0.70

36

10

1.85

52

28

11/64

4.366

80

47

0.75

36

11

1.90

52

28

3/16

4.763

86

52

0.80

40

13

1.95

55

29

13/64

5.5159

86

52

0.85

40

13

2.00

55

29

7/32

5.556

93

57

0.90

42

18

15/64

5.954

93

57

0.95

42

18

1/4

6.350

101

63

1.00

42

20

17/64

6.747

109

69

1.05

42

20

9/32

7.144

109

69

1.10

42

20

19/64

7.541

117

75

1.15

42

20

5/16

7.938

117

75

1.20

42

20

21/16

8.334

117

75

1.25

45

22

11/32

8.731

125

81

1.30

45

22