repeated for the other side of each tooth. If very distinctive pitting is visible the maximum
permitted
fl
ank backlash
c
max
of 3 mm is to be limited to 2.2 mm, see Figure 4 - distinctive pitting.
Figure 4 - distinctive pitting
4.3.4
Measured values:
D
a
Outer diameter of traction sheave in mm
a
Distance from outer diameter of traction sheave to measuring point in mm
R
a
meas
a
2
=
D
+
Measurement radius in mm
c
meas
Measured clearance in mm relative to measurement radius
4.3.5
Table values:
c
max
Maximum permitted
fl
ank clearance
r
Reference radius in mm for the maximum permitted
fl
ank clearance and the current
fl
ank clearance
4.3.6
Calculation of current
fl
ank clearance:
c
curr
c
meas
=
r
R
meas
*
c
s
max
4.3.7
Maximum permitted values:
Drive
Gear
s
max
in mm
r
in mm
ZAS0
SWG0
3
2.2*
260
ZAS1
SWG1
ZAS2
SWG2
ZAS3
SWG3
* if very distinctive pitting
Service instructions
ZAS0, ZAS1, ZAS2, ZAS3
Flank backlash measurement
A-TIA19_07-GB 1936 Index 001
Part.-No. 01013457-GB
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