Torques per screw
18
03.00|1341130_ROTA NCR-A |en
Technical data
Chuck data
ROTA NCR-A
190
225
250
315
400
500
630
800
1000
Max. actuating
force [kN]
20
28
38
40
54
65
80
80
150
Max. clamping
force [kN]
36
50
64
80
100
125
160
160
300
Max. speed [RPM] 4000 3500 3000 2500 1400
1200
1000
700
600
Stroke per jaw
[mm]
6
6
8
8
12
12
16
16
25
Piston stroke
[mm]
13.5
15.0
18.5
20.0
30.0
30.0
40.0
40.0
60.0
Pendular
compensation
1+1
1+1
2+2
2+2
2.5+2.5 2.5+2.5 3.5+3.5 3.5+3.5 6+6
Moment of inertia
[kgm
2
]
0.055 0.11
0.31
0.71
2.4
5.6
19.1
31.7
143
Weight [kg]
13.5
19.5
35
54
118
175
375
480
1250
Centrifugal force
of the base jaw
M
cGB
[kgm]
0.015 0.023 0.041 0.063 0.216 0.338 0.935 1.491 3.360
Max. jaw
eccentricity of
center of gravity
in axial direction
a
max
[mm]
12
24
24
24
32
32
32
32
40
Sizes 1200 to 2500 on request
The maximum RPM stated is only valid with the maximum
clamping force and when using the hard standard chuck jaws that
go with the chuck.
If unhardened top jaws or special chuck jaws are used, ensure that
the jaws weigh as little as possible.
For soft top jaws or special chuck jaws the speed permitted for the
cutting task must be calculated in accordance with VDI 3106
whereby the max. recommended speed may not be exceeded. The
calculated values must be checked by dynamic measurement.
Function monitoring (piston movement and actuating pressure)
must be performed in accordance with the guidelines of the
Berufsgenossenschaft (employers' mutual insurance association).
3
3.1