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V. Disassembly, Assembly
This motor incorporates permanent magnet in its rotor. Owing to this composition, pulling out of
the rotor from the stator is quite difficult. Therefore, do not pull out the rotor from the stator at the
time of disassembly/assembly of motor, such a case of replacement, etc. of bearing. Replacement of
bearing can be carried out keeping the rotor inserted in the stator. Also, at the time of
disassembly/assembly, do not proceed the work at load side and non-load side simultaneously.
Surely after completion of work of one side, start the work of the other side (As to the order of work,
starting from any of both side is available). Since magnetism of the magnet of rotor acts to outside
a little during the works of disassembly/assembly of motor, do not make Watch, Magnetic Card, etc.
approach to the motor.
1. Disassembly/assembly procedures
(See Fig. 9 below and structural sectioned drawings (Fig. 17
～
Fig. 20)
(1) Break the power supply.
(2) Remove the connection with the load.
(3) Remove all the external wirings connected with the terminals in the terminal box.
(4) Remove the connection part of pulse oscillator output cable connector at upper part of fan cover.
1.1 Non-load side
(1) Remove pulse oscillator output cable connector from fan cover.
(2) Remove fitting bolts of fan cover and remove fan cover. At this time, cooling fan installed at fan
cover is also removed in combined state with fan cover.
(3) Remove fitting screws of pulse oscillator cover and remove pulse oscillator cover. At this time,
pulse oscillator output cable is led from lower part of pulse oscillator and therefore, pay attention
not to be pulled this cable.
(4) Remove screws, which fix the plate spring of pulse oscillator stator to the mount of pulse
oscillator.
Fig. 9 Detailed drawing of non-load side pulse oscillator and bearing part
position cross section
of motor shaft (See
[Note] of P15 )
Position of plate spring
fitting screw
Pulse oscillator output cable
Detail of A-A
Set screw (M4-2
positions)
(applied with
screw lock for
loosening-stop)
Pulse oscillator output cable connector
Non-load side
bearing
Fan cover
Frame
Non-load side bracket
Inner cover of
non-load side
bearing
Plate
spring
Pulse oscillator mount
Pulse oscillator cover
Pulse oscillator
Motor shaft
C-type snap ring
