Loading Capacity; Measuring Dynamic Torque - HBM T10FS Operating Manual

T10FS
8

Loading capacity

Nominal torque can be exceeded statically up to the limit torque. If the
nominal torque is exceeded, additional irregular loading is not permissible.
This includes longitudinal forces, lateral forces and bending moments. Limit
values can be found in the "Specifications" chapter, on Page 67.

8.1 Measuring dynamic torque

The torque flanges can be used to measure static and dynamic torques. The
following rule applies to the measurement of dynamic torque:
 The T10FM calibration made for static measurements is also valid for
dynamic torque measurements.
 The natural frequency f
the moments of inertia J
T10FM's torsional stiffness.
Use the equation below to approximately determine the natural frequency f
the mechanical measuring arrangement:
+۷ 1
f c
·۷
0 T
2p
 The mechanical vibration bandwidth (peak‐to‐peak) must be no more than
200 % (measuring range 100 NV@m 400 %; measuring range 3 ... 10
kN@m 160 %) of the nominal (rated) torque identified for the T10FS. The
vibration bandwidth must fall within the loading bandwidth specified by
-M and +M
nom
(at 100 N@m: -2 M
resonance points.
A0785-1.4 en
for the mechanical measuring system depends on
0
and J
1 2
· 1 ۷) 1
J J
1 2
nom
and +2 M
nom
of the connected rotating masses and the
f = natural frequency in Hz
0
J J = mass moment of inertia in kg@m
1, 2
c = torsional stiffness in Nm/rad
T
*)
). The same also applies to transient
nom
57
of
0
2
HBM