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Atlas 3-Jaw Open Center 'Long Stroke' Power Chucks

ALS Series 6″ – 12″ Chucks

  • Extended jaw stroke

  • ± .0005 repeatability

  • 1.5mm x 60° master jaws

  • All steel body

  • Hardened jaw ways, master jaws and internal parts

  • Open center

Model Number
Thru Hole Dia
Jaw Stroke Dia
Sleeve Stroke
Gripping CapacityMax.
Gripping CapacityMin.
Draw Bar Pull (Kn)
Grip Force (Kn)
Max RPM
Wt lbs
ALS6-A5 (D)
1.575"
.945"
.591"
6.614"
1.378"
2243
2651
3600
31
ALS8-A6 (D)
1.889"
1.260"
.787"
8.468"
1.968"
3701
4190
3000
55
ALS8-A8 (I)
1.889"
1.260"
.787"
8.468"
1.968"
3701
4190
3000
55
ALS10-A6 (I)
2.578"
1.476"
.984"
10.679"
2.165"
4853
5505
2400
99
ALS10-A8 (D)
2.578"
1.476"
.984"
10.679"
2.165"
4853
5505
2400
99
ALS6-A5 (D)
1.575"
.945"
.591"
6.614"
1.378"
2243
2651
3600
31
ALS8-A6 (D)
1.889"
1.260"
.787"
8.468"
1.968"
3701
4190
3000
55
ALS8-A8 (I)
1.889"
1.260"
.787"
8.468"
1.968"
3701
4190
3000
55
ALS10-A6 (I)
2.578"
1.476"
.984"
10.679"
2.165"
4853
5505
2400
99
ALS10-A8 (D)
2.578"
1.476"
.984"
10.679"
2.165"
4853
5505
2400
99
(I) Indirect mount (D) Direct mount

(I) Indirect mount (D) Direct mount

TECHNICAL SPECIFICATIONS
PRATATLAS 3J LONGSTROKE PWRCHK DIM DWG.png
MODEL
ALS6-A5
ALS8-A6
ALS8-A8
ALS10-A6
ALS10-A8
ALS12-A6
ALS12-A8
ALS12-A11
A
6.65
8.46
8.46
10
10
11.97
11.97
11.97
B
5.91
6.69
7.17
5.2
5.24
9.45
9.17
9.33
C
5.512
6.693
6.693
8.661
8.661
8.661
8.661
8.661
D
3.25
4.188
5.501
4.188
5.501
4.188
5.501
7.751
E
0.622
0.699
0.738
1.014
0.738
0.945
0.669
0.827
F
0.197
0.197
0.197
0.197
0.197
0.197
0.197
0.197
H
4.126
5.252
6.748
5.252
6.748
5.252
6.748
9.25
J
1.102
1.771
1.771
2.086
2.086
2.48
2.48
2.48
K
M10
M12
M16
M12
M16
M12
M16
M20
M
0.787
0.984
0.984
1.181
1.181
1.181
1.181
1.181
N max.
1.545
2.086
2.086
2.46
2.46
2.933
2.933
2.933
N min.
1.151
1.594
1.594
1.87
1.87
1.244
1.244
1.244
O max.
0.659
0.817
0.817
1.053
1.053
1.505
1.505
1.505
O min.
0.364
0.462
0.462
0.443
0.443
0.502
0.502
0.502
P max.
0.394
0.118
0.118
0.236
0.236
0.323
0.323
0.323
P min.
0.197
-0.63
-0.63
-1.102
-1.102
-0.661
-0.661
-0.661
Q
1.023
1.378
1.378
1.575
1.575
1.969
1.969
1.969
R
0.472
0.551
0.551
0.63
0.63
0.826
0.826
0.826
S
0.945
1.26
1.26
1.575
1.575
1.496
1.496
1.496
T
0.079
0.079
0.079
0.079
0.079
0.118
0.118
0.118
U max.
M38x1.5
M55x2.0
M55x2.0
M65x2.0
M65x2.0
M75x2.0
M75x2.0
M75x2.0
W
1.771
2.56
2.56
2.874
2.874
3.268
3.268
3.268
X
0.787
1.181
1.181
1.771
1.771
1.968
1.968
1.968
Y
1.141
1.535
1.535
1.693
1.693
2.047
2.047
2.047
Z
2.598
3.74
3.74
4.331
4.331
4.37
4.37
4.37
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