PRATATLAS UNIVER 4-JAW SCROLL CHUCKS

One-year warranty
Sizes 6″ thru 24″
Chucks can be supplied in front-mount configuration for mounting on rotary tables or centers
Maximum .003″ TIR using nominated pinion
.001″ Repeatability using nominated pinion
Two-piece American Standard tongue and groove jaws
Nitride hardened and ground scroll
Hardened pinions
Iron body
Can be used for either two jaw or four jaw concentric, self-centering chucking
Larger sizes available on request
Sizes 20″ and 24″ chucks also available in iron body on request

Chuck Size	Flatback	D Type	Chuck No.	L Type	Chuck No.-1	A Type	Chuck No.-2	Threaded Type	Chuck No.-3
6	0673-2000	D-3	0673-20D3	L-00	0673-2L00	A-4	0673-20A4	1-1/2 - 8	0673-2041
6		D-4	0673-20D4	L-0	0673-20L0	A-5	0673-20A5	1-3/4 - 8	0673-2042
6								2-1/4 - 8	0673-2043
6								2-3/8 - 6	0673-2046

8	0873-2000	D-4	0873-20D4	L-00	0873-2L00	A-5	0873-20A5	2-1/4 - 8	0873-2043
8		D-5	0873-20D5	L-0	0873-20L0	A-6	0873-20A6	2-3/8 - 6	0873-2046
8		D-6	0873-20D6

10	1073-2000	D-5	1073-20D5	L-0	1073-20L0	A-5	1073-20A5	2-1/4 - 8	1073-2043
10		D-6	1073-20D6	L-1	1073-20L1	A-6	1073-20A6	2-3/8 - 6	1073-2046
10		D-8	1073-20D8			A-8	1073-20A8

12	1273-2000	D-6	1273-20D6	L-0	1273-20L0	A-6	1273-20A6
12		D-8	1273-20D8	L-1	1273-20L1	A-8	1273-20A8
12		D-11	1273-2D11	L-2	1273-20L2

16	1673-2000	D-6	1673-20D6	L-1	1673-20L1	A-8	1673-20A8
16		D-8	1673-20D8	L-2	1673-20L2	A-11	1673-2A11
16		D-11	1673-2D11

20	2073-2000	D-8	2073-20D8	L-1	2073-20L1	A-8	2073-20A8
20		D-11	2073-2D11	L-2	2073-20L2	A-11	2073-2A11

24	2473-2000	D-8	2473-20D8	L-2	2473-20L2	A-8	2473-20A8
24		D-11	2473-2D11			A-11	2473-2A11

Chuck Size	B1	B3	B4	B5	B6	B7	B15	J10
6-1/4	6.3	4.921	1.65	0.157	5.51	3xM10	2.56	1.64
8	7.9	6.299	2.16	0.157	6.92	3xM10	2.95	1.69
10	9.8	7.952	3.15	0.165	8.74	3xM12	3.26	2.11
12	12.4	10.157	3.74	0.196	11.18	3xM14	4.13	2.12
16	15.8	12.598	5.11	0.196	14.25	3xM16	5.55	2.44
20	19.6	15.748	6.49	0.236	18.03	3xM16	4.17	2.93
24	23.6	21.456	8.07	0.275	23.07	3xM16	5.51	2.93

AUTHORIZED PRATT BURNERD/ATLAS DISTRIBUTOR