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Technical data - Key bar chucks
8. Technical data
Chuck dimensions DURO-T
3012
Chuck size A
ø
Outer-
Jaw movement
Bore
Bore cab be enlarged
Min. thickness of flange
Moment of inertia GD 2 1)
approx. kg
1) The moment of inertia was measured with base jaws but without top jaws or back plate
The bore could be enlarged (measure C, at surcharge)
Enlarged bore max.
Max. permissible speed
The maximum permissible speed has been fixed so that 1/3 of the gripping force is still available as residual gripping force if
the maximum grippping is applied and the chuck is fitted with its heaviest jaws. The jaws may not project beyond the outside
diameter of the chuck. The chuck must be in perfect condition. The specification DIN 6386 Part 1 shall be observed.
Chuck size
Max. speed
Gripping force
The gripping force is the sum total of all jaw forces acting radially on the stationary workpiece.
The specified gripping forces are standard values.
They apply to chucks in a perfect condition which have been lubricated with RÖHM grease F79 and F80.
Chuck size
1)
Torque applied on key
1)
Total gripping force
Torque applied on key
Max. total gripping force
1) Maintaining the accuracy
Chuck capacities of jaw steps
Chuck size
External chucking
Jaw
position
Internal chucking
125
160
200
A1
128
164
206
B
4,8
6,2
6,8
C
32
42
52
C max.
35
45
55
D
46,5
63
81
E H6
115
145
185
F
4
5
5
G
100
125
160
H
3xM8
3xM10
3xM12
J
12
15
18
K
22,5
31,5
43
L
32,5
42
53,5
M
SW8
SW10
SW12
N
117
182
211
O
180
210
270
P
8,5
13
14
Q
17
30
30
kgm
2
-
0,13
0,41
o
o
o
α
21
35´
22
18
kg
4,0
9,3
18,6
125
160
200
min
-1
6000
5400
4600
125
160
200
Nm
20
40
60
kN
8,5
30
48
Nm
40
120
155
kN
23
73
114
125
160
200
A1
3-30
5-51
7-70
A2
31-65
45-91
58-123
A3
63-97
89-135
114-179
A4
95-129
115-161
142-207
J1
26-59
67-105
71-131
J2
57-91
93-132
99-159
J3
89-123
135-174
154-214
250
315
400
256
322
407
8
10,2
12,5
62
87
102
75
102
130
92
111
118
235
300
380
6
6
6
200
250
315
3xM16
3xM20
3xM24
25
30
37
47
59
57 ,7
66,5
86
110
SW14
SW17
SW19
284
309
359
450
500
600
17
21
25
35
35
40
1,14
3,25
8,8
o
o
o
19
17
20
34,5
64
112
250
315
400
4200
3300
2200
250
315
400
70
80
90
66
80
95
190
210
260
185
240
260
250
315
400
8-97
12-131
16-168
82-172
93-216
119-278
-
-
-
163-253
201-323
260-413
99-182
102-213
120-272
-
-
-
178-261
207-319
260-412
Han
mit Ba
Frem
Fremd
F
E
500
630
507
630
12,5
14
162
252
180
270
RUSS
118
143
460
580
D
6
6
400
520
3xM24
3xM24
37
37
57 ,5
72
152,5
196
SW19
SW24
356
570
600
600
25
29
45
55
22
70
o
o
15
69
30´
166
300
500
630
1900
1100
500
630
100
100
102
102
320
350
290
320
500
630
64-256
30-322
167-360
200-490
-
-
308-501
360-650
166-360
184-489
-
-
306-500
341-646
39
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