Operating manual
Explosion-protected right angle servo gear units KL/KS/PHK/PHKX/PHQK/PK/PKX
301/2019
WE KEEP THINGS MOVING
ID 443005_en.01
en
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5.2 Installation of gear unit
Mount the gear unit on an even, vibration-reducing and
torsion resistant substructure. Use screws of strength class
10.9 to fasten the gear unit KL, KS, PK, PKX . Use screws of
strength class 12.9 for all other gear units.
Fit the gear unit on the pilot (H7 fit).
Observe the following for assembly:
• Only for KL gear units with foot fastening: the housing
feet and attachment area may not be braced against
each other.
• The permitted shear and axial forces may not be
exceeded.
• Existing vent valves must be freely accessible.
• Earthing the gear unit housing via metal components of
the system must be ensured.
Gear units/geared motor with solid shaft; installation of
power transmission elements:
The output shaft is equipped with a centering thread
according to DIN 332, Sheet 2, which is provided both for
fitting and for axial mounting of transmission elements (gear,
chain wheel, pulley, coupling hub) by means of a central
screw. Shaft ends with a diameter up to 55 have tolerance
ISO k6, those larger than 55 have tolerance ISO m6. The
fitting keys correspond to DIN 6885, Sheet 1.
NOTICE
Damage to the bearing race.
Avoid all impacts to the output shafts.
Gear units/geared motor with hollow shaft and fitting key
connection:
a) Shaft-mounted gear units are mounted on the drive shaft of
the machine to be driven. The reactive torque must be
supported either by flange-mounting of the gear unit or a
torque bracket. If flange-mounted, the flange connection point
on the machine must not exceed a right-angle deviation to the
shaft axis of 0,03/100 mm (danger of distortion of bearings,
excessive bending strain on the machine shaft).For gear units
with a hollow shaft, always make sure that the machine shaft
is aligned with the hollow shaft of the gear unit (max. deviation
≤ 0.03 mm).b) The hollow shaft bore is designed according to
tolerance ISO H7 and the keyway according to DIN 6885
Sheet 1. The machine shaft must be ISO k6! The machine
shaft must have a centering thread according to DIN 332,
Sheet 2. The integrated fitting/push-off disk is provided for
axial mounting of the gear unit by means of a central screw.
Fitting the gear unit onto the machine shaft:
- Coat machine shaft with mounting grease
- Coat hollow shaft spiral groove and keyway with mounting
grease
- Fit gear unit by means of central screw. Do not use
hammer!
NOTICE
Rust on of the gear unit.
Never mount the gear unit without lubrication, since it will
rust on and cannot be removed for repairs.
Disassembly: Press the gear unit off by means of the push-
off disk and matching push-off screw. Support machine shaft
to keep it centered! If the shaft is stuck, we recommend
applying rust penetrating oil to the shaft ends in the key seat
for an extended period.
Gear units/geared motor with hollow shaft and shrink
disk:
The information under a) applies here as well and must be
observed! The description of the shrink disk connection and
the installation and safety instructions can be found in the
TECHNICAL INFORMATION SHEET “Installation
instructions for hollow shaft with shrink disk”.
5.3 Ventilation
The gear units are closed on all sides and are not vented.
6 Commissioning
6.1 Prior to commissioning
Check the following before commissioning:
• Is it ensured that the gear unit is adequately vented and
no external heat input (e.g. Via a coupling) is present?
The cooling air may not exceed a temperature of 40° C.
• For gear units with hollow shaft and shrink disk: were the
clamping bolts tightened to the specified torque? Is the
cover of the shrink disk properly mounted?
• Does the attached motor cover the full flange surface of
the motor adapter for gear units with motor adapters so
that IP65 protection class is provided?
• For gear units with motor adapter ME: is the clamp
coupling tightened to the specified torque? Is the plug
properly mounted?
• If ring screws were dismantled, are the holes sealed with
appropriate plugs?
• Is it ensured that no gear unit overload relating to the
permitted torque can occur due to the mounted motor?
(The permitted torque can be found in the order
confirmation.)
• When operating the attached motor at a drive controller:
is the drive controller parameterized so that a gear unit
overload is prevented?
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?
