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Tool clamp \ Technical introduction – tool chucks

tool chucks in accordance with ISO 7388-1
old standard DIN 69871-1 was replaced by ISO 7388-1 (dimensions are identical)

for the tool chucks in accordance with new type ISO 7388-1
type A without through-bore
type AD with through-bore (for central coolant feed)
type AF with side coolant supply feed across the tool collar (old type designation was type B)
type AD/AF with through-bore and with side coolant feed through the tool collar. (old type specification was AD/B)
l2 l1 f2
l3 f3
f1
a
d9 d7 d2 d3
d1
pull stud 69872 8°17’50’’
l2
l3 d3 d2
d6 d5

d9 d7 d2 d3

pull stud ISO 7388/B ISO 7388-1

pull stud 69872 and ISO 7388/B
design steep taper size d 2 d 3 g6 d 7 d 9 l 2 l 3
40 M16 17 12,95 18,95 44,5 16,4
ISO 7388/B
50 M24 25 19,6 29,1 65,5 25,55
30 M12 13 9 13 44 24
DIN 69872 40 M16 17 14 19 54 26
50 M24 25 21 28 74 34
steep taper ISO 7388-1
steep taper size a ±0.1 b H12 d 1 d 2 d 3 H7 d 5 ±0.05 d 6-0.1 d 8 max. f 1 ±0.1 f 2 min. f 3 -0.1 l 1 -0.3 l 5 -0.3 l 6 -0.4 l 7 -0.4
30 3,2 16,1 31,75 M12 13 59,3 50 45 11,1 35 19,1 47,8 15 16,4 19
40 3,2 16,1 44,45 M16 17 72,3 63,55 50 11,1 35 19,1 68,4 18,5 22,8 25
50 3,2 25,7 69,85 M24 25 107,35 97,5 80 11,1 35 19,1 101,75 30 35,5 37,7
all dimensions in mm
tool chucks in accordance with ISO 7388-2
old standard JIS B 6339 MAS BT was replaced by ISO 7388-2

for the tool chucks in old type JIS B 6339 MAS BT NORM for the tool chucks in accordance with new type ISO 7388-2
type A without through-bore type J without through-bore
type AD with through-bore (for central coolant feed) type JD with through-bore (for central coolant feed)
type B with side coolant feed across the tool collar type JF with side coolant feed across the tool collar
type AD/B with through-bore and with side coolant feed through the tool type JD/JF with through-bore and with side coolant feed through the tool
collar
collar
l2
l3

d9 d7 d2 d3
l1 f1
a f3
ISO 7388/B
l1 d1
l2 8°17’50’’
d3 d2
d6 d5
d1 d2 d5

pull stud compliant with JIS standard MAS BT 30° and 45° ISO 7388-2

Source: Hahn+Kolb Werkzeuge GmbH
Technical data subject to change. www.iconridge.com
Availability subject to country specific rules and regulations. 330

0714_EN_2018_KERN[21849874]-q.indd 715 12/17/2018 3:34:10 PM