Details

Shanks SK/ISO

ISO 7388-1-A

DIN 69871 (OBS)

IS:11173 (Part 1)

Other Shanks

MAS BT (ISO 7388-2-J) DIN 2080 - IS 2340

ISO 12164-1(DIN 69893-1)HSK

CAT ANSI / ASME B5.50

(All dimensions are in mm)

SK/ISO

 

D

L

-0.3

d1

H7

 

G

D1

h8

D2

Max

t

-0.4

t1

-0.4

b

H12

K

-0.3

30

31.75

47.8

13

M12

50

45.0

16.4

19.0

16.1

15.00

40

44.45

68.4

17

M16

63.55

50.0

22.8

25.0

16.1

18.5

45

57.15

82.7

21

M20

82.55

63.0

29.1

31.3

19.3

24.0

50

69.75

101.75

25

M24

97.50

80.0

35.5

37.7

25.7

30.0

CONE TOLERANCE  AT3

Material Heat Treatment

Carburizing Alloy Steel Surface Hardness HRc 58±2

Case Depth 0.6-1.0 mm @ HV1 550 Tensile Strength 1000 MPa Minimum

 

SK/ISO

 

'α' Basic

Tolerance Grade AT3

Generating Angle Limits α/2

AT α/2 Secs

AT α/2 µ Rads

 

L

ATD (D1 ~D2)

Min

Max

30

 

 

 

16º35'39.4"

8º17'51.2"

8º17'57.7"

6.5

31.5

42

0.0026

35

8º17'52.7"

8º17'57.7"

5

31.5

53

0.0033

40

8º17'51.2"

8º17'56.2"

5

20

59

0.0024

45

8º17'52.2"

8º17'56.2"

4

15.75

74

0.0030

50

8º17'50.7"

8º17'54.7"

4

15.75

92

0.0029