Yaskawa AC Servo Drive Rotary Servomotor Safety Precautions - Manual (Page 27)

1 Product Handling Precautions
E-25
• Measure the belt tension at 45 ° intervals of the shafts. Turn the shafts
and take measurements with a belt tension meter at each point.
Servomotors with Oil Seals
If the Servomotor is used where the shaft opening is subject to oil mist,
use a Servomotor with an Oil Seal. If the Servomotor is used where the
shaft opening is not subject to oil mist, use a standard Servomotor.
The operating conditions for a Servomotor with an Oil Seal are given
below.
Note: The oil seal is a single-lip, spring-loaded oil seal made of nitrile rubber
(NBR).
Check the type of oil to be used with the oil seal and make sure that it
is suitable.
• Use the oil seal in a lubricated condition with only splashing of oil.
• Do not use the Servomotor where the oil seal would be below the oil sur-
face.
Oil will enter the Servomotor, which may damage the Servomotor.
8888
Turn to 45˚ intervals.
Belt

Oil seal