
Installation and connection • Shaft end and bearing
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8JSA user's manual V1.00
3 Shaft end and bearing
The motor shaft is supported on both sides with grease-lubricated grooved ball bearings. Protect the motor from
damage due to excessive radial and axial forces!
Under all circumstances, avoid the following loads on the front shaft end or the rear motor housing cover:
•
Excessive pressure
•
Impacts
•
Hammer blows
Warning!
Damage due to excessive axial forces!
The motor bearings can be damaged or the service life reduced by excessive axial forces (e.g. by
impacting or pressing) on the shaft. Damage to the encoder or any installed options (holding brake,
gearbox) is also possible.
•
Do not hit the motor or output shaft with a hammer. The impact of a hammer certainly exceeds
the permissible values.
•
In addition, avoid impact and excessive pressure on the motor and output shaft.
Overdetermined bearing
Avoid an overdetermined bearing when attaching drive elements onto the output shaft! The necessarily occurring
tolerances cause additional forces on the output shaft bearing. This can damage or significantly reduce the service
life of the bearings!
Lifting and transporting
The weight of attachment elements (toothed gears, pulleys, couplings, etc.) can have a harmful effect on the
bearing during lifting and transportation from the motor. Take into account these radial and axial loads during these
operations!
Installing and removing attachment elements
Always install and remove the attachment elements (toothed gears, pulleys, couplings, etc.) at the shaft end without
any axial load on the motor bearings and all other parts installed in the motor. For this, use suitable clamping sets,
pressure sleeves, other clamping elements, retractors, etc. The centering hole on the face side of the shaft end
can be used for this work.
Pay attention to balanced connection elements or corresponding assembly.
Secure the attachments against unintended loosening after installation and before operation.