Periodic Maintenance; Servomotor Life Expectancy - Omron R88M-K User Manual

12 Troubleshooting and Maintenance

12-5 Periodic Maintenance

After replacing the unit, transfer to the new unit all data
needed to resume operation, before restarting the operation.
Equipment damage may result.
Never repair the product by disassembling it.
Electric shock or injury may result.
Servomotors and Servo Drives contain many components and will operate properly only when each of
the individual components is operating properly. Some of the electrical and mechanical components
require maintenance depending on application conditions. Periodic inspection and replacement are
necessary to ensure proper long-term operation of Servomotors and Servo Drives. (Quoted 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 Servomotors and Servo Drives. Recommended maintenance times are given below for
Servomotors and Servo Drives. Use these for reference in periodic maintenance.

12-5-1 Servomotor Life Expectancy

• The lifetimes for the different motor parts are listed below.
Bearings:
Decelerator: 20,000 hours
Oil seal:
Encoder:
These values assume an ambient motor operating temperature of 40°C, a shaft load within the
specified value, operation within the rated values (rated torque and rated rotation speed), and proper
installation as described in this manual.
The bearings, decelerator, oil seal, and encoder can be replaced for repair.
• The radial load during Servomotor operation on timing pulleys and other components contacting belts
is two or more times the static load or more. Consult with the belt and pulley manufacturers and
adjust designs and system settings so that the motor allowable axial load is not exceeded even
during operation. If a motor is used under a shaft load exceeding the allowable limit, the motor shaft
can break and the bearings can be damaged.
12-36
20,000 hours
5,000 hours
30,000 hours
G5-series AC Servomotors and Servo Drives User's Manual (with Built-in EtherCAT Communications)
Caution