Operating manual
EZ/EZHD/EZHP synchronous servo motors, EZS/EZM synchronous servo motors for screw
drive
5
05/2019
WE KEEP THINGS MOVING
ID 443032_en.01
en
www.stober.com
3.5 Synchronous servo motors EZHD,
EZHP
NOTICE
The hollow shaft of the motors moves in relation to the
supply elements passing though during operation.
The supply elements must be protected so they do not
scrape against the hollow shaft.
CAUTION!
The hollow shaft can heat up to 100°C in operation.
Observe the temperature for the supply elements that
pass through.
3.6 Servo spindle motors EZS/EZM
WARNING!
Risk of injury due to moving parts!
Check the following before commissioning:
Are the spindle shaft and the motor properly installed in
the machine?
Are no persons at risk by the axial movement of the spin-
dle shaft or slide?
Can no one touch the spindle shaft by coming in physical
contact with it?
WARNING!
Crushing due to contact with the spindle shaft!
Turning the spindle shaft manually with your hand can lead to
crushing injuries.
Never turn the spindle shaft manually.
NOTICE
Destruction of the spindle system!
Removing the spindle shaft from the spindle nut will cause the
system to be destroyed and will void the warranty.
Never remove the spindle shaft from the spindle nut!
CAUTION!
When EZM synchronous servo motors for screw drives
are in operation the spindle shaft moves axially in refer-
ence to the motor.
Fix the spindle shaft in place and install it in the machine.
Screw the motor together with the machine or moving
slide.
Make certain there are no objects in the axial movement
range of the slide or spindle shaft.
4
Transportation and storage
4.1 Transportation
Use the ring screws in the motor housing for vertical transport
of the motors. Sling the motors without ring screw with a suit-
able support cable directly on the gear unit housing. Note that
ring screw are only intended for vertical transport of the mo-
tors without additional attachments. In addition sling the mo-
tor attachments and make sure that there is no diagonal pull.
If the ring screws are removed after assembly, permanently
seal the threaded holes according to the protection class of
the motor.
When transporting the motors make certain not to damage
the shafts and bearings with impacts.
The motors must not be exposed to acceleration levels or
working times of more than 300 m/s² (30 g) as an individual
shock load during transport as per EN 60 068-2-27. The val-
ues for operation apply to long-term shock loads.
Motors with forced-cooling fan
For a motor with a forced-cooling fan, make sure that the mo-
tor is not supported on the cover of the forced-cooling fan or
connected to it.
Motors with water cooling
If you will be storing or transporting the system in which a syn-
chronous servo motor with water cooling is installed below +3
°C, drain the water completely out of the cooling circuit in ad-
vance.
4.2 Storage
The motors may only be stored in enclosed, dry rooms. Stor-
age in open air areas with a roof is only permitted for brief pe-
riods. Protect the motors from all damaging environmental
effects and mechanical damage.
When temporarily storing motors, prevent extreme tempera-
ture fluctuations at high humidity so that no condensation wa-
ter forms.
Long-term storage
If long-term storage is planned, protect motor parts that are
not painted against corrosion. Before placing a motor in oper-
ation again, have the winding checked for its insulation resis-
tance by an electrical specialist.
5
Mounting
NOTICE
The lip seals of the shaft seal rings can be damaged by
the use of solvents.
When removing the corrosion protection, make sure that
the lip seals of the shaft seal rings do not come into con-
tact with solvents.
Completely remove all corrosion protection on the shaft ends
prior to installation.
NOTICE
Damage to the bearing raceway and encoder.
Mount the motor/geared motor correctly without knocking
the shafts or housing.
