Rockwell Automation W-Series Brushless Servo Motor - Manual (Page 8)

8 W-Series Motor Installation Instructions
Publication 1398-IN520A-EN-P — May 2001
Using Shaft Seals
A seal is required on the motor shaft near the motor front bearing to
reduce exposure to fluids or fine dust that could contaminate the motor
bearing and reduce its lifetime. Refer to Motor Catalog Number
Identification on page 2 to identify the Frame Size and Shaft Seal type for
a particular motor. Refer to Shaft Seals on page 18 for usage information.