Operating instructions – ROHM ZG/ZS, ZGU/ZSU, EG/ES - Geared scroll chucks User Manual
Page 13
Gripping ranges of jaw steps (guideline values) -- valid for all lathe chuck types
Size
74
80
85
100
110
125
140
160
200
250
A 1 (BB)
2-24
2-30
2-30
3-38
3-42
3-53
3-53
3-72
4-100
5-122
A 2 (DB)
2-24
2-30
2-30
3-38
3-42
3-53
3-53
3-72
4-100
5-122
A 3 (DB)
23-46
27-55
27-55
38-71
39-77
39-89
47-97
47-116
56-152
73-190
A 4 (DB)
45-68
52-80
52-80
70-100
70-110
75-125
91-140
91-160
104-200 131-250
Greatest swing
88
104
104
128
138
157
174
194
238
302
Jaw stroke
11
14
14
15
19
25
25
34
48
58
Size
315
350
400
500
630
700
800
1000
1250
A 1
6-135
20-180
20-200
35-260
50-350
110-350 150-450 250-600 320-600
A 2
6-135
20-180
20-200
35-260
50-350
280-672 325-853 425-1070 490-1150
A 3
96-225
110-270 110-300 140-360 190-490 356-748 400-928 500-1150 564-1224
A 4
186-315 200-350 200-400 280-500 330-630
--
--
--
--
Greatest swing
395
440
480
600
730
1000
1170
1390
1476
jaw stroke
64
80
100
110
150
120
150
175
140
Size
74
80
85
100
110
125
140
160
200
250
J 1
23-46
25-53
25-53
33-66
33-71
37-87
39-89
39-107
44-140
59-165
J 2
45-68
50-78
50-78
65-94
65-104
73-123
83-132
83-152
92-186
119-236
Size
315
350
400
500
630
700
800
1000
1250
J 1
96-224
100-260 100-300 135-355 150-450 212-648 251-855 356-1080 426-1162
J 2
186-305 190-350 190-390 275-460 290-590 290-758 326-930 430-1150 500-1236
J 3
--
--
--
--
--
526-922 566-1094 660-1314 740-1400
Gripping ranges of lathe chucks with individually adjustable jaws agree approximately with the above values. They apply to 3 and 4-jaw
chucks and lathe chucks with reversible jaws.
Do not exceed the maximum gripping ranges.
External chucking
Internal chucking
W 74-630
W 700-1250
W 74-630
W 700-1250
Lathe chuck ZG-ZS, ZGU-ZSU, ZGF and ZGD
with cylindrical centring rim
Lathe chuck ZG-ZS, ZGU-ZSU, ZGF and ZGD
with short taper mounting
Lathe chuck ZG Hi-Tru
Lathe chuck EG-ES
1
Chuck body
5
Stud bolt
2
Backplate
6
Drilling jaw
3
Scroll
7
Lathe jaw
4
Pinion
8
Mounting screw
9
Backplate mounting screw
13
Base jaw
10
Adapter plate
14
Reversible jaw
11
Adapter plate mounting screw
15
Reversible top jaw
Face plate UGE-UGU, USE-USU
12
Adjusting spindle
16
Spindle
Gripping ranges for stepped jaws (guideline values) -- valid for face plates
Size mm
150
200
260
310
350
400
450
500
560
600
630
710
800
900 1000 1100 1200
A1 min.
16
16
20
20
20
35
40
40
45
50
60
130
190
190
200
210
220
A2 max.
130
190
260
295
350
400
450
500
550
570
585
690
800
900 1000 1100 1200
Greatest swing
170
235
305
355
410
465
510
570
640
660
675
785
870
Operating instructions
GB
13