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Pratt Burnerd/Atlas16C Dead-Length Power Collet Chucks
PRATT-ATLAS DEAD LENGTH 5C & 16C COLLET

A Type Mount

• Short overall length excellent for main or sub-spindle applications
• Chuck accuracy is .0003” TIR from rear mounting register and working collet taper
• High speed up to 6000 rpm
• Body nickel plated for corrosion resistance
• Hardened and ground main body and cone
• Dead Length feature eliminates part pullback
• Straight recess or available with A type mountings. Other mounting types available on request
• In second operations work, shoulder components can be stopped against the face of the collet
• Both collet types are internally threaded in the rear end to house either a backstop or ejector if required
• Drawback Spring CRAWFORD COLLETS achieve the highest possible concentric accuracy
• Chuck includes threaded connector to customers specifications

Chuck Type
5C
5C
16C
16C
Spindle Mount
A2-5
A2-6
A2-5
A2-6
A (mm/in)
137/5.393
158/6.220
137/5.393
158/6.220
B (mm/in)
104.8/4.125
133.4/5.252
104.8/4.125
133.4/5.252
C (mm/in)
82.56/3.250
106.38/4.188
82.56/3.250
106.38/4.188
D (mm/in)
Max. M65
Max. M65
Max. M65
Max. M65
E (mm/in)
137/5.393
137/5.393
137/5.393
137/5.393
F (mm/in)
78/3.071
78/3.071
90/3.543
90/3.543
I (mm/in)
68/2.677
68/2.677
68/2.677
68/2.677
L (mm/in)
122/4.803
122/4.803
145/5.708
145/5.708
Maximum Force
1800kaf/3968lbf
1800kaf/3968lbf
2300kaf/5070lbf
2300kaf/5070lbf
Maximum RPM
6000
6000
5000
5000
Chuck Order Number
CPD-5CA5
CPD-5CA6
CPD-16CA5
CPD-16CA6
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