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Atlas Floating Type Compensating Power Chucks

DFC Series Chucks 7″ – 16″

3 jaw power chuck with float compensation designed for shaft applications machined on centers
Supplied with fixed or spring center (specify when ordering)
Maximum durability achieved through internal sliding on spherical surface
Adapter mount for A type spindles
Larger sizes available on request

Model No.	Jaw Stroke Dia.	Sleeve Stroke	Comp Range Stroke	Min. Gripping Dia.	Draw Bar Pull lb/f	Grip Force lb/f	Max RPM	Wt lbs.
DFC7-A4	0.394	0.787	0.157	0.787	3200	5550	4000	33
DFC7-A5	0.394	0.787	0.157	0.787	3200	5550	4000	33
DFC7-A6	0.394	0.787	0.157	0.787	3200	5550	4000	33
DFC8-A6	0.787	0.984	0.157	0.984	4400	6600	3200	62
DFC8-A8	0.787	0.984	0.157	0.984	4400	6600	3200	62
DFC10-A6	0.787	0.984	0.196	1.181	5076	7936	2500	108
DFC10-A8	0.787	0.984	0.196	1.181	5076	7936	2500	108
DFC12-A8	0.984	1.181	0.236	1.181	5700	9250	2000	128
DFC12-A11	0.984	1.181	0.236	1.181	5700	9250	2000	128
DFC16-A8	1.181	1.634	0.394	1.575	6850	19850	1000	374
DFC16-A11	1.181	1.634	0.394	1.575	6850	19850	1000	374
DFC18 and larger sizes available on request.

Dimensional Data (in inch)	#COLSPAN#	#COLSPAN#	#COLSPAN#	#COLSPAN#	#COLSPAN#
MODEL	DFC7	DFC8	DFC10	DFC12	DFC16
A	6.69	8.46	10	11	16.5
B	3.9	4.97	5.63	6.09	7.28
C	5.512	7.48	8.66	10.039	14.961
D	0.157	0.165	0.196	0.224	0.224
E	4.125	5.25	6.75	6.748	8.661
F	1.654	2.244	2.64	2.835	3.543
G	1.024	1.575	1.77	1.969	1.969
H	0.433	0.512	0.67	0.669	1.102
J	M34x1.5	M50x1.5	M58x1.5	M55x1.5	M70x1.5
K	0.787	0.787	0.787	0.787	0.787
L	1.772	2.264	2.519	2.835	5.295
M	0.433	0.591	0.708	0.787	0.787
N	0.63	0.787	0.745	1.024	1.102
T	0.433	0.551	0.708	0.787	0.826
U	M8	M10	M12	M12	M16
V	1.083	1.339	1.575	1.732	1.929
W	M10x100	6-M12x125	6-M16x160	6-M16x160	9-M20x180
X	1.102	1.062	1.062	1.063	0.984