Omron R88D-KTA5L User Manual page 273

 When connecting to a V-belt or timing belt, consult the manufacturer for belt selection and tension.
 A radial load twice as large as the belt tension will be placed on the motor shaft. Do not allow a
load that exceeds the allowable radial load to be placed on the motor shaft. If an excessive radial
load is applied, the motor shaft and bearings may be damaged.
 Set up a movable pulley in the middle of the motor shaft and the load shaft so that the belt tension
can be adjusted.
Water and Drip Resistance
 The protective structure for the motors is as follows:
Equivalent to IP67 (except for through-shaft parts and motor connector pins and encoder
connector pins)
Oil-water Measures
Use the Servomotor with an oil seal if you are using it in an environment where oil drops can
adhere to the through-shaft part. The operating conditions of the Servomotor with an oil seal
are as follows:
 Keep the oil level below the lip of the oil seal.
 Prepare a good lubricated condition under which only oil droplets splash on the oil seal.
 If you are using the Servomotor with the shaft in upward direction, make sure that no oil
accumulates on the lip of the oil seal.
Radiator Plate Installation Conditions
 When you mount a Servomotor onto a small device, be sure to provide enough radiation space
on the mounting area. Otherwise the Servomotor temperature rises too high. One of the
preventive measures is to install a radiator plate between the motor attachment area and the
motor flange. (Refer to the following figure.) If a radiator plate cannot be connected, the
Servomotor may be damaged by an excessive rise in temperature. Refer to the "Servomotor
Specifications"(P.3-59) for the radiator plate specifications.
 The temperature rise depends on the mounting part materials and the installation environment.
Check the actual temperature rise by using a real Servomotor.
OMNUC G5-SERIES AC SERVOMOTOR AND SERVO DRIVE USER'S MANUAL
Pulley
Belt
Tension
4-1 Installation Conditions
Tension adjustment (Set a movable structure.)
Radiator plate
4
4-4