• HSK is hollow shank short taper toolholder
  • It was developed by Achen University in Germany in 1991
  • There are six different type of HSK: A, B, C, D, E & F
  • In 2001, ISO published it as norm ISO12164-1:2001
  • ISO revised the taper angle from 1:10 to 1:9.98
  • It was to make sure the taper D2 will contact the spindle
  • when HSK toolholder has dual contact on taper and face
CLAMPING FORCEHSK-A032HSK-A040HSK-A050HSK-A063HSK-A080HSK-A100
  5KN 6.8KN 11KN 18KN 28KN 45KN

TAPERHSK-A032HSK-A040HSK-A050HSK-A063HSK-A080HSK-A100
ØD1 h10 32 40 50 63 80 100
ØD2 24 +0.007/+0.005 30 +0.007/+0.005 38 +0.009/+0.006 48 +0.011/+0.007 60 +0.013/+0.008 75 +0.015/+0.009
Ød4 H10 17 21 26 34 42 53
Ød5 H11 21.0 25.5 32.0 40.0 50.0 63.0
Ød10 max. 26 34 42 53 67 85
d16 M10*P1.0 M12*P1.0 M16*P1.0 M18*P1.0 M20*P1.5 M24*P1.5
f1 +0.0/-0.1 20 20 26 26 26 29
f2 min. 35 35 42 42 42 45
f3 +/-0.1 16 16 18 18 18 20
l1 +0.0/-0.2 16 20 25 32 40 50
l6 JS10 8.92 11.42 14.13 18.13 22.85 28.56
h1 +0.0/-0.2 13.0 17.0 21.0 26.5 34.0 44.0
b1 +0.04/-0.04 7.05 8.05 10.54 12.54 16.04 20.02
b2 H10 7 9 12 16 18 20
b3 H10 9 11 14 18 20 22

ezShrink EZ // HSK-T

  • In 2001, Japanese published HSK-ICTM
  • It was a new norm of HSK toolholders for CNC mill/turn machines
  • In 2008, ISO published it as norm ISO12164-4:2008
  • It is called HSK-T toolholders
CLAMPING FORCEHSK-T032HSK-T040HSK-T050HSK-T063HSK-T080HSK-T100
  6.5KN~7.5KN 8.84KN~10.2KN 14.3KN~16.5KN 23.4KN~28KN 36.4KN~42KN 58.5KN~67.5KN

TAPERHSK-T032HSK-T040HSK-T050HSK-T063HSK-T080HSK-T100
Ød10 max. 31 39 49 62 79 99
f2 min. 23 23 30 30 30 34
b1 +0.04/-0.04 7.05 8.05 10.54 12.54 16.04 20.02
b4 6.932 +0.030/-0.0 7.932 +0.030/-0.0 10.425 +0.035/-0.0 12.425 +0.035/-0.0 15.930 +0.035/-0.0 19.910 +0.035/-0.0