Operating manual
EZ/EZHD/EZHP synchronous servo motors, EZS/EZM synchronous servo motors for screw
drive
6
ID 443032_en.01
WE KEEP THINGS MOVING
05/2019
en
www.stober.com
5.1 Assembly of the motors/geared mo-
tors EZHD/EZHP
The motors/geared motors can be operated in any installation
position. Mount the motors/geared motors on an even, vibra-
tion-reducing and torsion resistant substructure. Use screws
of strength class 10.9 to fasten.
Fit the motors/geared motors on the pilot.
Make sure that the permitted shear and axial forces are not
exceeded during assembly.
5.2 Assembly of the threaded spindle on
the EZS motor
Tab. 5-1: Assembly information for clamping units
6
Commissioning
Electrical connections provided by the customer must comply
with applicable regulations.
Note:
The electrical connection diagram and safety regulations are
with the delivery documents of the motor. Comply exactly with
the information and safety regulations therein.
WARNING!
If the motor is in operation while plug connectors are
being disconnected, electric arcs can cause severe in-
jury or even death.
Do not connect or disconnect the plug connectors until after
the motor is deenergized.
WARNING!
Risk of injury due to moving parts!
Before switching on the drive, check the following:
Are no persons in danger due to start-up?
Is all protection and safety equipment properly installed,
in test operation too?
Is the drive not blocked?
Are the brakes released?
Is the direction of rotation of the drive correct?
Are components attached to the output such as feather
keys or coupling elements adequately secured against
centrifugal forces?
7
Maintenance
7.1 EZHP synchronous servo geared mo-
tors with hollow shaft
The planetary gear unit of the synchronous servo geared mo-
tor with hollow shaft is provided with life-long lubrication and
does not need maintenance. The specification and filling
quantity of the lubricant is given on the nameplate of the plan-
etary gear unit.
7.2 Servo spindle motors EZS/EZM
Axial angular ball bearings are installed on the A-side in the
EZS and EZM motors that directly absorb the threaded spin-
dle forces. These axial angular ball bearings are greased with
lithium soap grease GA28 at the factory. Under certain appli-
cation conditions, for example after a prolonged downtime or
for high humidity, relubrication may be required. Mineral-
based grease is suitable for relubrication, for example Arca-
nol Multitop.
Protect the threaded spindle against dirt.
8
Troubleshooting
In the event of a malfunction of the drive unit, call the
STÖBER service department at 07231 582-1190 (-1191, -
1224, -1225) in order to locate the nearest STÖBER service
partner for further action.
In urgent cases outside of normal business hours, you
can call the STÖBER 24-hour service hotline at 01805
786323 / 01805 STOEBER
9
Spare parts
Include the following when ordering replacement parts:
–
item no. of the part according to the replacement parts lis
–
model designation according to the rating plate
–
serial number according to rating plate
You can reach the STÖBER replacement parts service by
phone: 07231 582-1190 (-1191, -1224, -1225), or fax: 07231
582-1010.
Important notice: The replacement parts lists are not assem-
bly instructions! They are not binding for assembly of the gear
unit. Use only original replacement parts from Stöber. Other-
wise we will provide no guarantee and will assume no liability
for resulting damages!
Mount the threaded spindle on the EZS motor:
1. Degrease the threaded spindle in the area where it
comes into contact with the clamping unit.
2. Insert the threaded spindle through the clamping set in
the hole of the motor shaft.
3. The wrench size and the tightening torque that
corresponds to the size of your EZS motor can be found
in the table Tab. 5-1:
4. Tighten the hexagonal screws of the clamping unit
successively in several tightening sequences (approx. 1/
4 revolution per sequence) properly with a torque
wrench until all of them are tightened to the prescribed
tightening torque. Make sure that both spring washers lie
parallel to each other (maximum permitted deviation 0.2
mm).
EZS5
EZS7
Thread
M5
M6
Strength class
8.8
10.9
Wrench size [mm]
8
10
Tightening torque [Nm]
5
12
