Technical Information

HSK Quick-Reference Identification (continued)
Forms E and F
Forms E and F with automatic tool change are also variations of forms A and B.
These forms are intended for high-speed machining. Design features, such as
drive slots, the orientation notch, and chip holes, have been removed to help
eliminate imbalance. As a result, these forms are driven by the locking taper and
are suitable only for light machining applications such as high-speed metalcutting
and woodworking machines.
Form E offers five different shank sizes ranging from 25–63mm (.984–2.480")
flange diameter. There are three shank sizes for form F from 50–80mm
(1.969–3.150") diameter on the flange.
HSK Primary Offering
www.kennametal.com
HSK-E
balanced-by-design for higher speeds
HSK-F
balanced-by-design with greater flange
support for higher speeds
Technical Information
HSK Spindle Connection
HSK-T
Form T
Form T shanks are similar to form A, but with tighter key ways for turning.
This gives form T improved repeatability over form A. These shanks have new
centerline technology for variance and high productivity. They are also available
in a wide range of standard toolholders.
flange diameter D
forms
A and T form B form C form D form E form F
D2
mm
D4
mm
LS
mm
L2
mm
L7
mm
- - - - 25 - 19 14 13 2,5 6
32 40 32 40 32 - 24 17 16 3,2 8
40 50 40 50 40 50 30 21 20 4 8
50 63 50 63 50 63 38 26 25 5 10
63 80 63 80 63 80 48 34 32 6,3 10
80 100 80 100 - - 60 42 40 8 12,5
100 125 100 - - - 75 53 50 10 12,5
125 160 - - - - 95 67 63 12,5 16
160 - - - - - 120 85 80 16 16
Kennametal primary offering Secondary styles available upon request
M15
Technical Information