REDEX KRPX1+ Betriebs-, Montage- Und Wartungsanleitung Seite 18

4.4 Proper tooth meshing validation
Checking that both pinions are properly meshing with the rack by measuring the clearance between rack
and pinion teeth (t
1. Place two indicators as follow:
- One between the KRPX+ housing or carriage and a fixed
reference (1).
- One between the KRPX+ pinion (at pitch diameter) and a
fixed reference (2).
2. Move the carriage in one direction by turning the
gearbox input shaft.
Set the two indicators position at "0".
3.
4. Turn the input shaft to move the carriage in the other direction until both indicators have moved.
The difference between the measurements of the two indicators gives the backlash between rack &
pinion teeth (t
b2
Size
KRPX1+
KRPX2+
KRPX3+
KRPX4+
KRPX5+
Explanation of t
In case of a Twin arrangement (2 KRPX+), this operation should be done for both pinions independently.
It is also strongly recommended to repeat this operation at the highest and lowest points of the rack
topography (see chapter 4.1).
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KRPX+ User manual
)
b2
). Compare the value with the values given in the table below.
t acceptable backlash
b2
between rack and pinion
mm
+0.015
0.070
mm
-0.015
mm
+0.015
0.100
mm
-0.015
mm
+0.035
0.135
mm
-0.035
mm
+0.05
0.135
mm
-0.05
mm
+0.070
0.205
mm
-0.070
:
b2
Ref.: RX182/010
Version 01/2017 - English
(1)
(2)
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