8-17
8-5 Periodic Maintenance
8
Troubleshooting
8-5 Periodic Maintenance
The Servomotor and Servo Drive contain many components and will function fully only when each
of the individual components operates properly.
Some of the electrical and mechanical components require maintenance depending on application
conditions. Periodic inspection and part replacement are necessary to ensure the proper long-term
operation of the Servomotor and Servo Drive. (quotes from The Recommendation for Periodic
Maintenance of a General-purpose Inverter published by JEMA)
The periodic maintenance cycle depends on the installation environment and application conditions
of the Servomotor and Servo Drive.
Recommended maintenance times are listed below for reference in determining actual
maintenance schedules.
Servomotor Service Life
The service life for components is listed below.
Bearings: 20,000 hours
Decelerator: 20,000 hours
Oil seal: 5,000 hours
Encoder: 30,000 hours
These values presume an ambient Servomotor operating temperature of 40
°
C, shaft loads within
the allowable range, rated operation (rated torque and rated r/min), and install as described in this
manual.
You can request replacement of the bearings, Decelerator, Oil Seal, or encoder as repair work.
If timing pulleys are belt driven, the radial loads during operation (rotation) are as twice as the static
loads. Consult with the belt and pulley manufacturers and adjust designs and system settings so
that the Servomotor’s allowable shaft load is not exceeded even during operation. If a Servomotor
is used under a shaft load exceeding the allowable limit, the Servomotor shaft may break and the
bearings may burn out.
When requesting a repair or inspection, separate the Servomotor and Decelerator, and make a
separate request for each product.
Caution
Resume operation only after transferring all data required for
operation to the new Unit.
Not doing so may result in damage to the product.
Do not dismantle or repair the product.
Doing so may result in electric shock or injury.
