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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2 Jaw High Speed Open Center Power Chucks 
 

2ATL 6" - 12" Chucks

• 1.5mm x 60° master jaw
• Repeatability ± .0005"
• Large thru-hole
• Hardened jaw ways and all internal parts
• All steel body
• High RPM
Model Through Hole (in) Plunger Stroke (in) Jaw Stroke (Dia. in) Max Pull Force (lbf) Max. Gripping Force (lbf) Max. Speed (rpm) Weight (lbs) Moment of Inertia l (kg - m2) Gripping O.D. Range (in)
2ATL6-A5 1.77 0.472 0.2165 4935 12790 6000 33 0.062 .59-5.0
2ATL8-A5 2.07 0.63 0.2913 7830 19970 5000 57 0.19 .79-7.0
2ATL8-A6 2.07 0.63 0.2913 7830 19970 5000 55 0.184 .79-7.0
2ATL10-A6 2.95 0.748 0.3464 9659 24902 4200 90 0.37 .98-8.25
2ATL10-A8 2.95 0.748 0.3464 9650 24902 4200 84 0.34 .98-8.25
2ATL12-A6 3.58 0.905 0.4173 12790 32978 3300 138 0.809 1.18-10.0
2ATL12-A8 3.58 0.905 0.4173 12790 32978 3300 131 0.77 1.18-10.0
2ATL12-A11 3.58 0.905 0.4173 12790 32978 3300 154 0.912 1.18-10.0
2ATL15-A8 4.62 0.905 0.4173 15930 40382 2500 276 2.255 1.96-13.0
2ATL15-A11 4.62 0.905 0.4173 15930 40382 2500 260 2.241 1.96-13.0
2ATL18-A11 4.62 0.905 0.4173 15930 40382 2000 364 3.744 1.96-16.0
2ATL18-A15 4.62 0.905 0.4173 15930 40382 2000 421 5.183 1.96-16
Dimensional Data (in inches)
Dimensional Data (in inch)
Model A B C D E F G H J K L M N 
Max.
2ATL6-A5 6.65 3.58 5.51 0.787 0.59 3.25 4.566 4.125 0.629 3-M10 1.77 0.197 1.26
2ATL8-A5 8.27 4.29 6.69 0.984 0.905 3.25 5.25 4.125 0.512 3-M12 2.05 0.197 1.523
2ATL8-A6 8.27 4.05 6.69 0.984 0.669 4.187 5.905 5.25 0.708 3-M12 2.05 0.197 1.523
2ATL10-A6 10 4.721 8.66 1.181 0.987 4.187 6.75 5.25 0.708 3-M16 2.95 0.197 2.007
2ATL10-A8 10 4.45 8.66 1.181 0.708 5.507 7.48 6.75 0.945 3-M16 2.95 0.197 2.007
2ATL12-A6 11.96 5.08 8.66 1.181 0.987 4.187 6.75 5.25 0.708 3-M16 3.58 0.236 2.413
2ATL12-A8 11.96 4.8 8.66 1.181 0.708 5.5 7.48 6.75 0.984 3-M16 3.58 0.236 2.413
2ATL12-A11 11.96 6.06 8.66 1.181 1.968 7.75 6.75 9.252 1.102 3-M16 3.584 0.236 2.413
2ATL15-A8 15 6.3 11.81 1.692 1.299 5.5 9.252 6.78 0.945 3-M20 4.62 0.236 3.228
2ATL15-A11 15 5.86 11.81 1.692 0.866 7.75 10.236 9.252 1.102 3-M20 4.62 0.236 3.228
2ATL18-A11 17.72 5.86 11.81 1.692 0.866 7.75 10.236 9.252 1.102 3-M20 4.62 0.236 3.228
2ATL18-A15 17.72 7.24 11.81 1.692 2.244 11.25 9.252 13 0.945 3-M20 4.62 0.236 3.228
Dimensional Data (in inch)
Model O 
Max.		 O 
Min.		 P 
Max.		 P 
Min.		 Q R S T U V W X Y Ref.
2ATL6-A5 0.895 0.364 1.023 0.551 0.079 0.472 0.748 1.22 M55x2 3-M6 2.362 1.456 2.874 Fig-1
2ATL8-A5 1.171 0.462 1.476 0.846 0.079 0.551 0.807 1.378 M60x2 6-M10 2.598 1.496 3.74 Fig-2
2ATL8-A6 1.171 0.462 1.24 0.61 0.079 0.551 0.807 1.378 M60x2 3-M6 2.598 1.496 3.74 Fig-1
2ATL10-A6 1.328 0.561 1.318 0.571 0.079 0.63 0.984 1.575 M85x2 6-M12 3.7 1.693 4.338 Fig-2
2ATL10-A8 1.328 0.561 1.043 0.295 0.079 0.63 0.984 1.575 M85x2 3-M8 3.7 1.693 4.338 Fig-1
2ATL12-A6 1.801 0.62 1.3 0.394 0.079 0.826 1.102 1.968 M100x2 6-M12 4.252 2.009 5.118 Fig-2
2ATL12-A8 1.801 0.62 1.023 0.118 0.079 0.826 1.102 1.968 M100x2 3-M8 4.252 2.009 5.118 Fig-1
2ATL12-A11 1.801 0.62 2.283 1.378 0.079 0.826 1.102 1.968 M100x2 6-M20 4.252 2.009 5.118 Fig-3
2ATL15-A8 1.801 0.62 1.575 0.669 0.197 ..866 1.693 2.441 M130x2 6-M16 5.472 2.598 6.496 Fig-2
2ATL15-A11 1.801 0.62 1.141 0.236 0.197 0.866 1.693 2.441 M130x2 6-M20 5.472 2.598 6.496 Fig-1
2ATL18-A11 3.139 0.62 1.141 0.236 0.197 0.866 1.693 2.441 M130x2 3-M10 5.472 2.598 6.496 Fig-1
2ATL18-A15 3.139 0.62 2.578 1.614 0.197 0.866 1.693 2.441 M130x2 6-M24 5.472 2.598 6.496 Fig-3


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