IDENTIFICATION OF INTERNAL (I.D.) TURNING TOOLS-HSK HOLDER
Coding example H 50 T 20 S T F C L 11
H Type of holder
HSK - DIN 69893
32 - Ø32
50 - Ø50
80 - Ø80
125 - Ø125
50 Holder size
40 - Ø40
63 - Ø63
100 - Ø100
160 - Ø160
T
Form
A + C
8 - Ø8
12 - Ø12
20 - Ø20
32 - Ø32
50 - Ø50
20 Turning tools diameter
10 - Ø10
16 - Ø16
25 - Ø25
40 - Ø40
S
Clamping system
C
D
M
P
S
T
55°
80°
35°
80°
Insert Shape
C
D
S
T
V
W
90
75
95
117.5
15
93
F
Shape of turning tools
F
K
L
P
Q
U
Z
C Clearance angle
B
C
N
P
L
Feeding direction
L
R
N
11 Insert cutting edge lenght
C - D - V
S
T
W
HSK DIN69893 TOOLS AND TOOLHOLDERS
it permits a perfect tool interchangeability, it eliminates vibrations. • Manufactured with casehardening Steel • Casehardened with depth 0,4-0,5 mm • Hardened-Tempered-Black oxided • Hardness HRC 58+-2 , strenght 800-1000 N/mm2 • Internal and external grinding finish • Working of the front side (tool seat) • Taking up drive keys to ICTM tolerance • Tested 100% with certified measuring instruments
HSK - T All HSK tools and toolholders are manufactured according to DIN norm. CONE’S TOLERANCE: According to DIN 69893 DRIVE KEY’S TOLERANCE : The so-called ICTM tolerance was born to reduce the positive allowance between the spindle drive key and the holder key slot. The ICTM tolerance applied on these products to the drive key gives them a great capacity of precision. The advantages of standard ICTM are multiple: excellent repeatability of change tool positioning, maximum error +/-0,005 giving the cutting edge always the same position,
247 HSK-T TOOLHOLDERS AND TURNING TOOLS DIN ISO 12164-3
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