Screw tightening torques
32
02.00|1416054_ROTA-M2 + 2 |en-US
The calculated RPM n
perm
= 1495 RPM is smaller than the
maximum permissible RPM of the lathe chuck n
max
= 3200 RPM
This calculated RPM may be used.
Accuracy classes
Tolerances for run-out accuracy and axial run-out accuracy
correspond to the Technical Supply Terms for lathe chucks as per
DIN ISO 3442-3.
Permissible imbalance DIN ISO 21940-11
The ROTA-M flex 2+2 in ungreased state without T-nuts and top
jaws corresponds to the balancing quality class 6.3 (according to
DIN ISO 21940-11). Residual imbalance risks may arise due to
insufficient rotation compensation being achieved (see DIN EN
1550 6.2 e). This applies particularly to high speeds, asymmetrical
workpieces or the use of various top jaws, as well as uneven
application of lubricants. In order to prevent damage resulting
from these residual risks, the entire rotor is to be dynamically
balanced in accordance with DIN ISO 21940-11.
Screw tightening torques
Tightening torques for mounting screws used to set up the lathe
chuck on lathes or other suitable technical equipment and screws
of the lathe chuck itself.
(Screw quality 10.9)
Screw size
M6 M8 M10 M12 M14 M16 M18 M20 M22 M24 M27 M30
Tightening torques
M
A
(Nm)
13
28
50
88
120 160 200 290 400 500 1050 1500
Tightening torques for mounting screws used to attach top jaws
onto the chuck
(screw quality 12.9)
Screw size
M6
M8
M10 M12 M14 M16 M20 M24
Tightening torques M
A
(Nm)
16
30
50
70
130
150
220
450
3.5
3.6
4
