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Pratt Burnerd / SYSTEC MK4 3-Jaw Self-Contained Air Power Chucks

  • One-year warranty

  • Precision manufactured to fit types A and D spindles and adapter mounting

  • Repetitive gripping within .001″ TIR

  • Safe, Chuck operates independently of air supply when gripping

  • No separate actuating cylinder

  • No draw tube to restrict thru-hole

  • Sizes 5″, 6-1/2″, 8″, 10″, and 12″

  • Suitable for chucking or barwork

  • Less overhang. Lighter in weight

  • Minimum maintenance

  • Quick, simple Lever or Foot Pedal Operation

  • Easy installation

  • Optional top jaws

  • 1.5X60° & 1/16″ x 90° serrated master jaws available with T-nut

  • Available in 2 Jaw, 3 Jaw and 4 Jaw configurations.

Available in A, D, L, Threaded and Custom Mounts
Chuck Size
3-Jaw Part #
2-Jaw Part #-1
4-Jaw Part #-2
5" (1/16" x 90 serrations)
9730-01310
9720-01310
Not Available
5" (1.5 x 60 serrations)
9730-01323
9720-01323
Not Available
6" (1/16" x 90 serrations)
9730-01710
9720-01710
Not Available
6" (1.5 x 60 serrations)
9730-01723
9720-01723
Not Available
8" (1/16" x 90 serrations)
9730-02110
9720-02110
9740-02110
8" (1.5 x 60 serrations)
9730-02123
9720-02123
9740-02123
10" (1/16" x 90 serrations)
9730-02610
9720-02610
9740-02610
10" (1.5 x 60 serrations)
9730-02623
9720-02623
9740-02623
12" (1/16" x 90 serrations)
9730-03210
9720-03210
9740-03210
12" (1.5 x 60 serrations)
9730-03223
9720-03223
9740-03223
MK4 CHUCKS TECHNICAL SPECIFICATINS
Chuck Size
A
B
C
D
E
F
Mtg. Bolts
Mtg. Holes
Wt. Lbs.
Max rpm*
Radial Jaw Travel
OD Min-Max
ID Min-Max
Grip Force Lbs.**
5"
5.354"
8.0315"
4.8031"
1.260"
4.7244"
0.2559"
M6x70 (6)
6.2795"
31
4500
0.1181"
NA
NA
5,845
6"
6.693"
9.9213"
5.0394"
1.535"
6.1024"
0.2559"
M8x75 (8)
8.0906"
51
4500
0.1575"
.63" to 7.09"
2.80" to 7.80"
10,566
8"
8.465"
11.4961"
5.3150"
2.047"
7.6772"
0.2559"
M8x75 (8)
9.6654"
77
3600
0.1575"
.98" to 8.62"
3.58" to 9.58"
15,737
10"
10.236"
13.1890"
6.0236"
3.622"
9.2520"
0.2559"
M10x90 (8)
11.2795"
112
3500
0.1969"
1.22" to 10.71"
4.45" to 11.39"
18,659
12"
12.402"
14.2520"
6.4961"
4.528"
9.2520"
0.2559"
M10x140 (8)
12.3031"
154
2500
0.1969"
1.57" to 13.35"
5.31" to 14.69"
20,458
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