Torques per screw
04.00|0889132_ROTA TB2 / ROTA TB2 LH |en
35
Grades of Accuracy
Tolerances for radial and axial run-out accuracy correspond to the
Technical Supply Terms for lathe chucks as per DIN ISO 3442-3.
Permissible imbalance
The ROTA TB2 / ROTA TB2 LH 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.
Torques per screw
Tightening torques for mounting screws used to clamp the chuck
on lathes or other suitable technical equipment
(screw quality
10.9)
Screw size
M6 M8 M10 M12 M14 M16 M18 M20 M22 M24 M27 M30
Admissible torque
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
Max. admissible torque M
A
(Nm) 16
30
50
70
130
150
220
450
3.4
3.5
4
