Mitsubishi Electric HR Series, Instruction Manual

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[Supplement] Structure of outdoor type motor
The major parts of the outdoor type motors (IP44) are the same as those of the indoor type motors. Further,
special consideration is given to the following items to enhance the waterproofing effect.
(1) Shaft through hole ...... Provided with flinger, V-ring and end cover. The parts used for horizontal type
motors with legs are shown in Table 17. When replacing the bearing, replace
the flingers and V-ring with new ones.
(2) Terminal box ............. For frame size of 63 to 180, steel plate boxes are used, and for frame size of
200 and above, steel or cast iron terminal boxes are used. Packing is provided
between terminal-box cover and its base. If the packing is deformed or cracked,
replace it with new one.
(3) Fitting surfaces ........... A sealing agent has been applied to the fitting surfaces of frame and bracket.
When reassembling, apply the agent in the same manner.
(4) Installation method ..... Use the motor in the posture shown in the outline drawing. Take care that the
drain hole is not clogged.
(5) Painting ...................... Paints excelling in weather resistance, salt water resistance and chemical
resistance are used.
Table 17 Standard parts of shaft through holes of outdoor type motors (horizontal type with legs)
Frame No.
Installation method/part
63, 71 80 to 132 160 to 225
Installation with
shaft horizontal
Anti-load side V-ring Flinger Flinger
Load side
Flinger
End cover
Flinger
End cover
Flinger
End cover
Installation with
shaft end
downward
Anti-load side V-ring V-ring Water flinger
Load side
Flinger
End cover
Flinger
End cover
Flinger
End cover
Installation with
shaft end upward
Anti-load side V-ring Flinger Flinger
Load side Flinger Water flinger Water flinger
(Note) 1. The structure of the shaft through hole on the load side of the flanged motor is basically same as that of the indoor type
motor.
2. The end cover is fitted after a sealing agent is applied.
3. It is recommended to replace rubber parts every 2 years.
Fig. 13 Parts used for shaft through hole of outdoor type motor
(The part names are shown. Refer to Table 17 above for explanations of the outdoor structure.)
Flinger V-ring Water flinger
Bearing
V-ring
Bearing
Flinger
Bearing
Water flinger