KE-2050/KE-2060, KE-2050R/2055R/KE-2060R Maintenance Manual
2-7
<Procedure>
c
Put the screw in the tap of the Z-motor and lock
the mounting screw with the screw pulled in the
direction indicated by an arrow with a force of 29.4
N (3 kgf) using a tension gauge.
Rev. 2.00
d
Using a tension gauge, adjust the belt tension so
that the deflection amount is 0.75 mm when the
center part of the belt is pressed with a force of
1.07 N.
Apply Loctite 242 to the Z-motor mounting
screws
Distance between the axes 48
11
(4 pcs.) and tighten them with a
tightening torque of 2.3 Nm.
When tightening the setscrew of the Z-motor
pulley, make sure to align the orientation of the
flat part of the Z-motor shaft and the setscrew of
the pulley. Tighten the setscrew with a torque of
0.5 Nm.
(7) After the Z-axis motor has been assembled, obtain the PWB top surface height of the MS
parameter. If this value is not in a range of 1.5 - 4.5 mm, turn the Z-axis motor pulley 180
°
against the Z-motor shaft and fix it again. Then obtain the MS parameter again and check that
the PWB top surface height is in a range of 1.5 - 4.5 mm.
Timing belt Z
Pull
6 mm
(Stroke for one rotation
of the Z-axis ball screw)
Z-sensor OFF area
1.5 to 4.5 mm Stable area
Z-sensor ON area
