Protection From Oil And Water - Mitsubishi Electric GENERAL PURPOSE AC SERVO MR-E- A/AG Instruction Manual

14. SERVO MOTOR

14.4.5 Protection from oil and water

(1) Next, the servo motor is not waterproof (IP44). Do not subject the servo motor to oil and water.
Especially for the HC-KFE series, do not subject the shaft-through portion to oil.
Servo Motor Series
HC-KFE
Oil or water
Servo motor
(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-KFE 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.
Height above oil level h
Servo Motor
52 to 152
HC-SFE
202 to 702
(3) When installing the servo motor horizontally, face the power cable and encoder cable downward. When
installing the servo motor vertically or obliquely, provide a trap for the cable.
Protection
IP55
Gear
Servo motor
Lip
V ring
Height above Oil Level h
[mm] [in]
20 0.79
25 0.98
Cable trap
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