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MNA1MLSDM00EN, V2.01, 07.2009
PAS4•S 4 Installation
Portal axes with ball screw drive 47
4.2 Mechanical installation
Accessibility for servicing When mounting the linear axis, the motor and the sensors, keep in mind
that they may have to be accessed for servicing.
Mounting position The linear axis can be installed in any position.
If a linear axis with a mounted motor is mounted in a vertical position, the
motor should be at the top. This way, the ball screw is under tension and
there is no buckling stress.
4.2.1 Standard tightening torques
Special tightening torques are applicable for mounting sensors and
elastomer couplings; these tightening torques are listed in the appropri-
ate chapters.
The following, generally applicable tightening torques apply to mounting
the payload and fastening slot nuts, clamping claws, motor and contact
plate with hex socket screws.
Table 4.1 Standard tightening torques for screws, ISO 4762 - 8.8
Thread Wrench size [mm] M
Amax.
[Nm]
M3 2.5 1.1
M4 3 2.5
M5 4 5
M6 5 8.5
M8 6 21
M10 8 42
M12 10 70