ThyssenKrupp Rothe Erde Manual Del Usuario página 15

Bearing inspection
The alternative:
IWM (integrated wear measuring device)
ThyssenKrupp Rothe Erde always focuses on developing innovative solutions for
permanently monitoring the condition of a bearing in order to further optimize the
function and reliability of plant operations. The integrated wear measuring device
for slewing bearings is a patented invention which enables online inspection of the
maximum permissible axial clearance or axial reduction of a slewing connection.
Figure 9
Figure 10
Advantage It is no longer necessary to
interrupt operations in order to determine
the axial clearance.
A pin made of stainless steel is located in
the peak load area of the raceways. The
electrically isolated pin is mounted in one
ring and protrudes into a groove in the other
ring. The maximum tolerated clearance can
be adjusted by means of the groove width.
If the clearance changes by an impermissible
amount, the ring and the pin will make con-
tact with each other. The pin's electrical
connection results in a signal being triggered
when the pin touches the other ring. This
signal indicates that the permissible relative
movement of the rings has been reached
and that it is time to inspect the bearing.
Advantage The deformation of the compa-
nion structure and the elasticity of the bolt
connections do not signifi cantly infl uence
the measurement result. The elastic appro-
ximation of the raceways, the axial clearance
of the bearing and the out-of-fl atness of the
contact surface are compensated. Costs for
maintenance personnel are minimized.
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