
B–65152E/03
4. NOTES ON INSTALLATION
BCATLTLON EOT TFC α
29
CAUTION
6 Output shaft seal
To prevent cutting lubricant or dust from penetrating inside the motor, one of the following
output shaft seals is provided on the output shaft. (For the use and applicable motors, see
Chapter 3, “Selecting a Motor.”)
For those models with an oil seal, ensure that the surface of the lubricant is below the lip of the
oil seal.
If a simple labyrinth is used as the output shaft seal (high–speed model) or if no seal is provided
(foot mounting type), ensure that lubricant does not splash onto the flange surface. (If such a
motor is directly mounted on a gear box, the lubricant may gradually penetrate inside the motor
even when no lubricant splashes on flange surface, thus resulting in motor failure. Therefore,
do not mount such a motor on a gear box directly.
Inside of the motor
Output shaft
Oil seal
(rubber)
Lip
No gap
With an oil seal
Gap
Gap
Simple labyrinth
(metal)
Gap
With a simple labyrinth No seal
Gap