YASKAWA SGM series, Safety Precautions

E-8

• A Servomotor is a precision device. Do not subject the output shaft or the 

main body of the Servomotor to strong shock.

• Design the machine so that the thrust and radial loads on the motor shaft 

during operation do not exceed the allowable values given in the catalog.

• When you attach the key to the motor shaft, do not subject the key slot to 

direct shock.

• Do not allow any foreign matter to enter a SERVOPACK or a Servomotor with 

a Cooling Fan and do not cover the outlet from the Servomotor’s cooling fan.

There is a risk of failure.

• If you use oil as the gear lubricant, always inject the specified oil before start-

ing operation.

• You can install the Servomotor either horizontally or vertically. However, if 

you install a Servomotor with an Oil Seal with the output shaft facing upward, 

oil may enter the Servomotor depending on the operating conditions. Confirm 

the operating conditions sufficiently if you install a Servomotor with the out-

put shaft facing upward. Some Servomotors with Gears have restrictions on 

the installation orientation. Refer to the relevant technical documents.

• If an installation orientation is specified for a Servomotor with a Gear, install 

the Servomotor in the specified orientation.

There is a risk of failure due to oil leakage.

• For a Servomotor with an Oil Seal, use the Servomotor with the oil seal in a 

lubricated condition with only splashing of oil.

If the Servomotor is used with the oil seal under the surface of the oil, oil may 

enter the Servomotor, possibly resulting in failure.

• The shaft opening of a Servomotor is not waterproof or oilproof. Implement 

measures in the machine to prevent water or cutting oil from entering the Ser-

vomotor.

There is a risk of failure.

Continued on next page.

• In an application where the Servomotor would be subjected to large quantities 

of water or oil, implement measures to protect the Servomotor from large 

quantities of liquid, such as installing covers to protect against water and oil.

• In an environment with high humidity or oil mist, face Servomotor lead wires 

and connectors downward and provide cable traps.

There is a risk of failure or fire due to insulation failure or accidents from 

short circuits.

Continued from previous page.

NOTICE