Cable; Rotary Servo Motors With An Oil Seal - Mitsubishi Electric MELSERVO-J5-HK-KT Series User Manual

2.5

Cable

The power supply and encoder cables routed from the rotary servo motor should be fixed to the rotary servo motor to keep
them unmovable. Otherwise, the cable may be disconnected. In addition, do not modify the connectors, terminals, and other
areas at the ends of the cables.
Precautions
The cables should not be damaged, stressed, loaded, or pinched.
2.6

Rotary servo motors with an oil seal

For rotary servo motors with an oil seal, the oil seal prevents the entry of oil into the rotary servo motor. Make sure to install it
in accordance with this section.
Even if the oil seal on the rotary servo motor makes noises during operation, it does not indicate a problem with the functions.
Pressure and oil level
Install the rotary servo motor horizontally, and set the oil level in the gear box to be always lower than the oil seal lip. If the oil
level is higher than the oil seal lip, the oil enters the rotary servo motor and may cause a malfunction. For the height above oil
level, refer to the chapter of the applicable rotary servo motor series.
Gear Shaft
Rotary servo motor
Height above
oil level
Lip
Oil seal
High pressure against the oil seal causes abrasion, which shortens the service life of the product. Keep constant internal
pressure by equipping a ventilator to the gear box.
Temperature
If the oil seal lip reaches a high temperature, the service life of the oil seal will be shortened. The maximum applicable
temperature of material of the oil lip is 100 ˚C, and the temperature of the oil lip increases by 10 ˚C to 15 ˚C at maximum
rotation. Keep high-temperature oil away from the oil lip.
2
2 INSTALLATION
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2.5 Cable