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3
Clamping
Systems
Design:
Short design, guide elements of rigid design, hardened and
ground wear parts ensure high concentricity and long life. Compact
design and high rigidity lead to the best machining results. High clam-
ping forces are reached by the integrated worm gear at low effort,
Holding torque > 75 Nm at 13 mm dia.
Machining is safe thanks to
automatic blocking of the worm gear even when in left-handed rotation
and quickly decelerated spindle.
Taper angle: Tolerance AT3.
Taper surface roughness: Ra < 0.001 mm.
Concentricity: < 0.03 mm.
Max. permissible speed: 7000 min
-1
.
Balancing quality: Pre-balanced up to 7000 min
-1
at a residual
imbalance of max. 40 gmm.
Application:
For drilling, countersinking, reaming, thread cutting and
for simple finishing milling work. Can be used in machining centres,
turning, drilling and milling machines.
Supplied:
Short drill chuck with hex spanner.
Order
No.
Clamping range
mm
3528
BT
l
1
mm
D
1
mm
0101
1.0–16.0
214.50
40
88
50
(324)
CNC short drill chuck
B
JIS
6339
MAS/BT
Form
AD
Design: JISB 6339 (MAS-BT), form AD.
Short design, guide elements
of rigid design, hardened and ground wear parts ensure high concentri-
city and long life.
Taper angle: Tolerance AT3.
Taper surface roughness: Ra < 0.001 mm.
Concentricity: < 0.03 mm.
Max. permissible speed: 7000 min
-1
.
Balancing quality: pre-balanced up to 7000 min
-1
at a residual
imbalance of max. 40 gmm.
Application:
For drilling, countersinking, reaming, thread cutting and
for simple finishing milling work. Can be used in machining centres,
turning, drilling and milling machines.
Supplied:
Short drill chuck with hex spanner.
Note:
Higher speeds possible with special balancing. Also available as
ULTRA design (concentricity ≤ 0.015 mm).
Order
No.
Clamping range
mm
3486
BT
l
1
mm
l
2
mm
D
1
mm
D
2
mm
0001
0.5–10.0
261.80
40 77 37.5 38 45
0007
1.0–16.0
240.10
40 88 – 50 –
(318)
Order
No.
Clamping range
mm
3486
BT
l
1
mm
l
2
mm
D
1
mm
D
2
mm
0009
1.0–16.0
301.80
50 99 – 50 –
(318)
CNC precision short drill chuck AKL for clockwise and counterclockwise rotation
B
JIS
6339
MAS/BT
Form
AD
Design: JISB 6339 (MAS-BT), form AD/B,
from alloy case-hardened
steel, with a core tensile strength of approx. 950 N/mm
2
and a hard-
ness depth of min. 0.5 mm. Taper to DIN 254.
Hardened 58 ±2 HRC.
Short design with central coolant supply, chuck and shank in one piece.
Clamping (using a hex spanner) essentially increases clamping force
in comparison to conventional chucks. At the same time, this secures
the chuck against becoming loose during left-handed rotation or being
quickly decelerated from higher speeds.
Taper angle: Tolerance AT3.
Taper surface roughness: Ra < 0.001 mm.
Concentricity: 0.02 mm.
Balancing quality: G6.3 25000 min
-1
.
Application:
For mounting tools with cylindrical shank with internal
cooling.
Supplied:
CNC short drill chuck with sealing disc for coolant drill bits
with 3-6 mm dia.
Order
No.
Clamping range
mm
3529
3530
d
2
mm
l
1
mm
3529
3530
0002
0.3– 8.0
302.50
–
36
81
–
0005
0.5–13.0
280.00
335.00
50
98
110
0010
2.5–16.0
292.00
349.00
57
98
110
(325)
(325)
CNC precision short drill chuck for clockwise and counterclockwise rotation
B
JIS
6339
MAS/BT
Form
AD/B
3529
BT 40
3530
BT 50
m
d2
d1
l1
l2
Tool holders and accessories
594