ROHM DURO-T hand-operated chuck (with key bar principle) - Manual (Page 39)

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Chuck dimensions DURO-T
Technical data - Key bar chucks
A A1
E
B
C
G
H
J
D
P
F
Q
K
Chuck size A 125 160 200 250 315 400 500 630
Outer-
ø A1 128 164 206 256 322 407 507 630
Jaw movement B 4,8 6,2 6,8 8 10,2 12,5 12,5 14
Bore C 32 42 52 62 87 102 162 252
Bore cab be enlarged C max. 35 45 55 75 102 130 180 270
D 46,5 63 81 92 111 118 118 143
EH6 115 145 185 235 300 380 460 580
F 4 5 5 6 6 6 6 6
G 100 125 160 200 250 315 400 520
H 3xM8 3xM10 3xM12 3xM16 3xM20 3xM24 3xM24 3xM24
J 12 15 18 25 30 37 37 37
K 22,5 31,5 43 47 59 57,7 57,5 72
L 32,5 42 53,5 66,5 86 110 152,5 196
M SW8 SW10 SW12 SW14 SW17 SW19 SW19 SW24
N 117 182 211 284 309 359 356 570
O 180 210 270 450 500 600 600 600
P 8,5 13 14 17 21 25 25 29
Min. thickness of flange Q 17 30 30 35 35 40 45 55
Moment of inertia GD2 1) kgm 2 - 0,13 0,41 1,14 3,25 8,8 22 70
α 21 o 35´ 22 o 18 o 19 o 17 o 20 o 15 o 69 o 30´
approx. kg kg 4,0 9,3 18,6 34,5 64 112 166 300
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.
Chuck size 125 160 200 250 315 400 500 630
Max. speed min -1 6000 5400 4600 4200 3300 2200 1900 1100
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.
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 125 160 200 250 315 400 500 630
Torque applied on key 1) Nm 20 40 60 70 80 90 100 100
Total gripping force 1) kN 8,5 30 48 66 80 95 102 102
Torque applied on key Nm 40 120 155 190 210 260 320 350
Max. total gripping force kN 23 73 114 185 240 260 290 320
1) Maintaining the accuracy
Chuck size 125 160 200 250 315 400 500 630
External chucking
Jaw
position
A1 3-30 5-51 7-70 8-97 12-131 16-168 64-256 30-322
A2 31-65 45-91 58-123 82-172 93-216 119-278 167-360 200-490
A3 63-97 89-135 114-179 - - - - -
A4 95-129 115-161 142-207 163-253 201-323 260-413 308-501 360-650
J1 26-59 67-105 71-131 99-182 102-213 120-272 166-360 184-489
Internal chucking J2 57-91 93-132 99-159 - - - - -
J3 89-123 135-174 154-214 178-261 207-319 260-412 306-500 341-646
Chuck capacities of jaw steps
Key bar c
huc
ks DURO-T
O
L
α
N
8. Technical data
Montage- und Betriebsanleitung für
Fremdsprachentexte ...
Handspannfutter (Keilstangenprinzip)
Fremdsprachentexte ...
Fremdsprachentexte ...
mit Backensicherung
DURO-T
E
F
RUSS