
Type A
No coolant through hole L1 8°17'50"
d 3 G
L 4
Type AD Central coolant hole
f 2 f3 f 1
a L6 L7
d8 d 6 d5 b
d1 L5
L5 d
A
Type B d A-A
12 Coolant through flange 20° 30°
Type AD Coolant through spindle
A-A
A
A
e1
e 1
Type ADB
A
Type B Coolant through flange
| Shank | a±0.1 | b(H12) | d | d1 | G | d3(H7) | d5±0.05 | d6 | d8max | f1±0.1 |
| SK 30 | 3.2 | 16.1 | 7 | 31.75 | M12 | 13 | 59.30 | 50 | 45 | 11.1 |
| SK 40 | 3.2 | 16.1 | 7 | 44.45 | M16 | 17 | 72.30 | 63.55 | 50 | 11.1 |
| SK 50 | 3.2 | 25.7 | 7 | 69.85 | M24 | 25 | 107.25 | 97.50 | 80 | 11.1 |
| Shank | f2 min. | f3 -0.1 | L1 -0.3 | L4 min. | L5 -0.3 | L6 -0.4 | L7 -0.4 | e1±0.1 | d12 | TAPER AT3 |
| SK 30 | 35 | 19.1 | 47.80 | 24 | 15.0 | 16.4 | 19.0 | 21 | 4 | 0.002 |
| SK 40 | 35 | 19.1 | 68.40 | 32 | 18.5 | 22.8 | 25.0 | 27 | 4 | 0.003 |
| SK 50 | 35 | 19.1 | 101.75 | 47 | 30.0 | 35.5 | 37.7 | 42 | 6 | 0.004 |