HBM TTS Mounting Instructions page 38

38
Specifications (continued)
2)
Load limits
Nominal (rated) torque M
for reference only
Limit torque related to M
Breaking torque related to M
Axial limit force
Lateral force limit
Bending limit moment
External square adapter (within scope of
supply)
Weight with case and a square adapter
2)
The specified values are mainly determined by the square adapter and its fixation. They are valid if the
square adapter is used which is included in the standard scope of supply. If used appropriately, it is not pos-
sible, in practical applications, to apply bending moments and axial forces up to the specified limits, be-
cause these are transferred by the square connector only to a limited degree.
Each type of irregular stress (bending moment, lateral or axial load, exceeding the nominal torque) can only
be permitted with its given static load limit if none of the others can occur. Otherwise the limit values must
be reduced. If for instance 30 % of the bending limit moment and also 30 % of the lateral limit force are
present, only 40 % of the axial limit force are permitted, provided that the nominal (rated) torque is not
exceeded. With the permitted bending moments, axial and lateral limit forces, measuring errors of about 1
% of the nominal (rated) torque can occur. The effects of the bending moments and lateral forces on the
measurement result have already been taken into account upon determination of the class according to
guideline DKD−R−3−7 as far as these result from the intended use of transfer torque wrenches (torque gen-
eration through force application on the lever).
Classification features according to DKD-R 3-7
Nominal (rated) torque M
for reference only
Class according to DKD-R 3-7
Relative repeatability error b'
in one mounting position
Relative reproducibility error b
in varying mounting positions
Relative reproducibility error b
with varying lever arm lengths
Relative zero error f
Relative reversibility error h
Relative interpolation error f
3)
The values refer to the actual torque (actual value) and are valid for torques w 20 % of M
HBM
nom
nom
nom
nom
)
3)
3)
3)
l
related to sensitivity
0
3)
3)
a
NVm 100 200
kNVm
ft-lb 75 150
%
%
kN 2 4
kN 1 3
NVm 70 90
inch 1/2
kg 8 9.5
NVm 100 200
kNVm
ft-lb 75 150
%
%
%
%
%
%
TTS
500
1 3
375 750 2,250
150
200
5 5 5
6 8 15
110 110 200
3/4 1 1 1/2
15 32
500
1 3
375 750 2,250
0.2
0.1
0.2
0.2
0.05
0.25
0.1
.
nom
A1571-1.2 de/en