TAPER STANDARDS
Steep Taper Shanks (ASME B5.50, CV/BCV)
L 3
L 4
L 5
L 1
L 2
Taper øD 1 øD 2 øD 3
L 1
L 2
L 3
L 4
L 5
b M
CV40 CV50
2.50 2.50 2.50 2.57 .98 .89 .89 .98 .63 5/8”-11 2.75 2.75 3.88 4.01 1.38 1.39 1.14 1.23 1.01 1”-8
• For high rigidity information see pg. 84
Position of the Cutting Edge on Single Cutter Tools
Steep Taper Shanks (JIS B6339, BT/BBT)
L 3
L 3
L 1
L 2
Taper øD 1
øD 2
L 1
L 2
L 3
b M
BT30 BT40 BT50
1.25 1.81 1.91 .79 .64 .63 M12 1.75 2.48 2.57 .98 .89 .63 M16 2.75 3.94 4.01 1.38 1.39 1.01 M24
Hollow Taper Shanks (DIN 69893, Form A)
L 3
øD 3 Max
L 3 Min
Taper øD 1
øD 2
L 1
L 2
b 1
t 1
L 1
L 2
ø10
HSK-A32 1.26 9.5 1.02 .63 HSK-A40 1.57 1.18 1.34 .79
.79 1.38 .28 .79 1.38 .32
.21 .20 .20 .20 .19 .19 .19
HSK-A50 1.97 1.50 1.65 .98 1.02 1.65 .41 HSK-A63 2.48 1.89 2.09 1.26 1.02 1.65 .42 HSK-A80 3.15 2.36 2.68 1.57 1.02 1.65 .63 HSK-A100 3.94 2.95 3.46 1.97 1.14 1.77 .79 HSK-A125 4.92 3.74 4.37 2.48 1.14 1.77 .99
Position of the Cutting Edge on Single Cutter Tools
L 3
Hollow Taper Shanks (DIN 69893, Form E)
L 1
L 2
øD 3 Max
L 3 Min
L 1
Taper øD 1
øD 2
L 2
HSK-E25 .98
.75
.79
.51
.79
.79
HSK-E32 1.26 .95 1.02 .63 HSK-E40 1.57 1.18 1.34 .79
.79 1.38
.79 1.38 HSK-E50 1.97 1.50 1.65 .98 1.02 1.65 HSK-E63 2.48 1.89 2.07 1.26 1.02 1.65
L 3
Hollow Taper Shanks (ISO 12164-3, Form T)
L 1
L 2
ø10
øD 3 Max
L 3 Min
Taper øD 1 t 1 HSK-T50 1.97 1.50 1.93 .98 1.02 1.18 .41 .41 .20 HSK-T63 2.48 1.89 2.44 1.26 1.02 1.18 .49 .50 .20 HSK-T80 3.15 2.36 3.11 1.57 1.02 1.18 .63 .63 .19 HSK-T100 3.93 2.95 3.90 1.97 1.14 1.34 .78 .78 .19 øD 2 L 1 L 2 b 1 b 2
Position of the Cutting Edge on Single Cutter Tools
BIG CAPTO (ISO 26623-1, Polygon Hollow Shank Taper with Face Contact)
L 1
L 2
Orientation Groove
Taper øD 1
L 1
L 2
C3 C4 C5 C6 C8
1.26 .75 1.57 .94
.59 .79
1.97 1.18 .79 2.48 1.50 .87 3.15 1.89 1.18
Position of the Cutting Edge on Single Cutting Tools
65
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