Specifications

4– 8
4.INSTALLATION
2) When the gear box is mounted horizontally, the oil level in the gear box should always be
lower than the oil seal lip on the servo motor shaft. If it is higher than the oil seal lip, oil will
enter the servo motor, leading to a fault. Also, provide a breathing hole in the gear box to
hold the internal pressure low.
The HC-MF series servo motor is not equipped with a V ring or an oil seal and cannot be
used with the gear box as described above. Oil should be shut off on the gear box side.
Some HA-FF series servo motors are equipped with an oil seal. Please contact Mitsubishi.
Servo motor
V ring
Gear
Lip
Height above oil level h
Servo Motor Height above Oil Level h [mm] ([in])
8 (0.32)
12 (0.48)
14 (0.56)
20 (0.79)
25 (0.98)
20 (0.79)
25 (0.99)
20 (0.79)
25 (0.98)
20 (0.79)
20 (0.79)
25 (0.98)
12 (0.47)
14 (0.55)
20 (0.79)
053 · 13
23 · 33
43 · 63
81
121 to 301
52 to 152
202
· 352
53 to 153
203 · 353
103 to 203
72 · 152
202 to 502
13
23 · 43
73
HA–FF
HC–SF
HC–UF
HC–RF
3) When installing the servo motor horizontally,
face the power cable and encoder cable down-
ward. When installing the servo motor vertically
or obliquely, provide a trap for the cable.
Cable trap
5) When the servo motor is to be installed with
the shaft end at top, provide measures to pre-
vent oil from entering the servo motor from the
gear box, etc.
Gear
Lubricating oil
Servo motor
4) Do not use the servo motor with its cable
soaked in oil or water. (Figure on the right)
Cover
<Incorrect> Capillary phenomenon
Oil/water pool
Servo
motor