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PRATT BURNERD/ATLAS 3-JAW NBK  LOW PROFILE SCROLL CHUCK

Series NBK
The Ultimate Low Profile 3-Jaw Universal Chuck

  • Three operating pinions positioned at a 30 degree angle for easier operation

  • Sizes available 6, 8, 10, 12, 16, and 20 inch diameter

  • Easy Installation with flange type mounting

  • One Year Warranty

  • Accurate .001″ repeatability on duplicate parts using the nominated pinion

  • Ideal for Drill Presses, Standard Mills, Vertical Machining Centers, Angle Plates, Tombstones, and Grinding Machines

  • American Standard hard top and master jaws

Part Number
Approx Weight
OD GrippingMin
OD GrippingMax
ID GrippingMin
ID GrippingMax
Torque Max ft/lbs
Gripping Force Max ft/lbs
NBK6
24 lbs.
.31"
6.30"
1.89"
5.91"
44
11,801
NBK8
40 lbs.
.43"
7.87"
2.44"
7.48"
58
14,751
NBK10
62 lbs.
.47"
9.84"
2.83"
9.41"
97
22,126
NBK12
95 lbs.
.59 "
11.81"
3.38 "
11.41"
115
28,027
NBK16
250 lbs.
2.36"
16.14"
5.71"
15.28"
181
10,117
NBK20
330 lbs.
3.39"
19.69"
9.65"
19.21"
231
12,368
PRATATLAS NBK 3-JAW TECHSPEC DIM PHOTO.png
Part Number
A1
A2
B1
B2
C
D
E
F
G
H
J
K
L*
M
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