SECTION 4 MOTOR GUIDE T200 User's Manual
PAGE 4-15
4.6.2 Motor Installation Guideline
MOOG recommends that hexagon socket head screws to DIN 912 8.8 (see column H in) be used to secure the motor.
Assembly is made very much easier by using an Allen key with ball head, particularly in the cases of motor sizes 2 and
3. The screws used to install these motor sizes must not be more than 40 mm long.
MOOG motors can become very hot (up to 155° C winding temperature) in operation. Good heat dissipation must
therefore be ensured when installing the motor, i.e. it should be flanged onto a suitably solid metal part of the machine.
Adequate convection must also be ensured. In individual cases, the motor must furthermore be protected against contact
due to the risk of burns. Forced cooling (e.g. with fans) will increase the continuous power, while bad convection may
decrease the continuous performance.
Before connecting a coupling to the motor shaft, the shaft must be thoroughly degreased. When using a degreasing
agent, care must be taken to prevent it entering the bearing. Otherwise the bearings permanent lubrication can no longer
be guaranteed. Moog recommends the use of a clamp coupling or shrink connection to ensure reliable torque
transmission. An inexpensive and service friendly connection is possible with the slot and key option (ensure tight slot
tolerances).
Impermissibly high axial and radial forces on the shaft can result in motor damage during installation. The service life of
the motor is impaired if the bearing is damaged in any way. Adjusting the rotor shaft by force can impair the correct
functioning of the optional brake to such an extent that it has little or no braking effect. Excessive pressure and impacts
on the front end of the shaft and rear housing cover must therefore be avoided under all circumstances.
Delicate part (sticker on servomotor). A hammer must not be used to force the gearing or
gearwheel onto the shaft when installing such parts. The screw thread in the center of the shaft
must be used for this purpose. An extractor supported on the center of the shaft must be used
when dismantling the parts. The permissible axial and radial forces are in all cases exceeded by
the impulses due to hammering.
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