Rockwell Automation W-Series Brushless Servo Motor - Manual (Page 18)

18 W-Series Motor Installation Instructions
Publication 1398-IN520A-EN-P — May 2001
Shaft Seals
Shaft seals that provide environmental sealing of W-Series motors are
available from Allen-Bradley. They provide an additional barrier to
moisture and particle intrusion to the motor bearings. W-Series motors are
shipped with either a Teflon or a Viton shaft seal installed.
Using Shaft Seals
Teflon shaft seals are primarily for applications above a foodline. As such,
Teflon shaft seals are not lubricated and are typically replaced at 3 to 6
month intervals.
Viton shaft seals may be lubricated and should only be used in
applications below a foodline. Viton shaft seals are typically replaced at
12 month or greater intervals when lubricated. Lubricant is supplied with
Viton shaft seal kits.
Removal and Installation of Shaft Seals
Teflon seals may be removed by carefully lifting with a small, flat-bladed
screwdriver around the outside edge of the seal.
Viton seals are mounted on a steel carrier. They may be removed by
carefully forcing a small, flat-bladed screwdriver between the seal and the
end cap periphery. This deforms the metal inward until there is sufficient
room to grasp the deformed steel with a needle-nose pliers and remove
the seal.
IMPORTANT
Damage to the motor surface where shaft seals make
contact can cause excessive wear and early failure of the
shaft seal.
Use care to prevent scratching or damaging the surface
of the motor.
Failure to observe these safety procedures could result in
damage to equipment.