QCS Workholding LLC
10635 Tower Oaks Blvd.  Ste. E
Houston  TX   77070
Toll Free (888) 869-2424    Local (281) 664-1020   Fax  (281) 664-1026
mailto:workholding@hotmail.com
 

AtlasChucks.com

An Online Pratt Burnerd/Atlas Chuck Distributor
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Large Closed Center Adjustable Jaw Power Chucks for Vertical and Horizontal Lathes 
 

40 - 79 inches

  • Ideal for Large vertical and Horizontal Lathe applications
  • Universal Wedge Design with manually adjustable Master Jaws
  • Available in 3, 4 and 6-Jaw configurations
  • Sealed front Master Jaw design for Vertical Use
  • High Speed Design
  • Available Mountings Straight Recess and ‘A’ Type Spindles
  • Contact Factory for application expertise and quotation
MODEL V-240 VIT-240 V-250 VIT-250 VE-250 VIT-263 VE-263 VE-279
Number of Jaws 3 4 3 4 6 4 6 6
Plunge Stroke (in) 2.244 2.244 2.244 2.244 2.244 2.362 2.362 2.362
Radial Jaw Stroke 
(+ Manual Setting) (in)		 .90+1.18 .90+1.18 .90+1.18 .90+1.18 .90+1.18 1.34+1.57 1.34+1.57 1.34+1.57
Pull Force (lbf) 40465 40465 40465 40465 40465 44961 44961 44961
Grip Force (lbf) 71938 71938 71938 71938 71938 80931 80931 80931
Oper. Pressure (psi) 610 610 610 610 610 670 670 670
Max. Speed (rpm) 630 550 500 400 360 300 280 230
Weight (lbs) 1422 1544 1962 2073 2140 3748 3969 6284
Mount of Inertia (kg-m2) 82 89 168 177 183 518 548 1350
Matching Cylinder ALT250C ALT250C ALT250C ALT250C ALT250C ALT250C ALT250C ALT250C
Grip O.D. Range (in) 11.22-38 11.22-38 10.63-47 10.63-47 10.63-47 15.35-61 15.35-61 17.32-76

Dimensional Data  (in inches)
Dimensional Data (in inch)
Model A B C D Max H J K L M
40" V/VIT-240" 39.56 7.086 20.47 19.76 18.25 4.25 M24 M52x1.5 0.315
50" V/VIT/VE-250" 49.21 7.068 20.47 24.53 18.25 4.25 M24 M52x1.5 0.315
63" VIT/VE-263" 63 8.661 28.34 31.34 25.49 5.67 M30 M52x1.5 0.315
79" VE-279" 78.74 9.37 28.34 39.21 25.49 5.67 M30 M52x1.5 0.315
Dimensional Data (in inch)
Model N Max. O P Max. P Min. Q R S T U
40" V/VIT-240" 17.992 1.181 2.323 0.078 0.157 7-M24 0.748 3.346 2.834
50" V/VIT/VE-250" 22.165 1.181 2.323 0.078 0.157 10-M24 0.748 3.346 2.834
63" VIT/VE-263" 29.055 1.575 3.228 0.866 0.236 13-M24 0.866 4.331 2.834
79" VE-279" 35.984 1.575 3.937 0.866 0.236 17-M24 0.866 4.331 2.834


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Toll Free (888) 869-2424   Fax (281) 664-1026
Email   workholding@hotmail.copm
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