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PRATT BURNERD 4-JAW INDEPENDENT CAST IRON CHUCKS

PBA Medium Duty-144 Series
PBA Heavy Duty-145 Series

  • Two-year warranty

  • Precision manufactured to fit types A, D, L, and threaded spindles or adapter mounting

  • Ductile iron body

  • Sizes 6″ – 16″

  • Hardened operating screws

  • Solid reversible hard jaws

  • Special jaw and jaw way design adding extra bearing surfaces, increases chuck life and rigidity

Chuck Size
Flat Back.
A Mount
Model Number
D mount
Model Number-1
L Mount
Model Number-2
6
614400
D-3
614420
L-00
614431
6
D-4
614421
L-0
614433
8
814400
A-5
814410
D-3
814420
L-00
814431
8
D-4
814421
L-0
814432
8
L-1
814433
10
1014400
A-5
1014410
D-4
1014421
L-00
1014431
10
D-5
1014422
10
A-6
1014411
D-6
1014423
L-0
1014432
10
A-8
1014412
D-8
1014424
L-1
1014433
12
1214400
A-6
1214411
D-6
1214423
L-0
1214432
12
A-8
1214412
D-8
1214424
L-1
1214433
12
1224400
2-PIECE JAWS
14
1414500
A-6
1414511
D-6
1414523
L-1
1414533
14
A-8
1414512
D-8
1414524
L-2
1414534
14
1424500
2-PIECE JAWS
16
1614500
A-8
1614512
D-8
1614524
L-1
1614533
16
A-11
1614513
D-11
1614525
L-2
1614534
16
1624500
2-PIECE JAWS
PRATTATLAS 144-145 4-JAW SPETACH DWG.png
Chuck Size
A
B
C
D
E
F
G
H
J
K
L
Gripping Min
Gripping Max
lbs
6
6.30"
4.921"
1.77"
2.12"
.87"
.16"
5.512"
.94"
M10
M10
7-1?8"
5/16"
5"
16
8
7.87"
4.921"
1.97"
2.83"
1.22"
.16"
5.512"
1.26"
M10
M10
9-1?4"
5/16"
7"
31
10
9.84"
7.874"
2.36"
2.83"
1.22"
.19"
8.819"
1.26"
M12
M12
12"
1/2"
8"
43
12
12.40"
7.874"
2.95"
3.15"
1.42"
.19"
8.819"
1.42"
M12
M12
14"
1/2"
10"
72
14
13.80"
10.236"
2.95"
3.58"
1.47"
.19"
11.26"
1.42"
-
M12
16"
3/4"
12"
126
16
15.75"
10.236"
4.05"
3.58"
1.47"
.19"
11.26"
1.42"
-
M12
18"
3/4"
14"
180
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