Operating instructions

16
Mechanical and electrical design
32
2371
Back gable and bearing
The back gable and the bearing trunnion housing
are constructed of a webbed heavy casting for
extra rigidity. The bearings are protected against
filtration of water by three seals. An intermediate
safety outlet provides an escapement for any
possible condensation.
The seals are mounted on a chrome-plated,
noncorrosive, specially hardened sleeve bushing
that is mounted on the drive shaft to prevent wear
of the seals and shaft. The main bearing is fitted
machinetight into the bearing trunnion housing. A
nut is tightened on the shaft to prevent the cylinder
from moving in and out.
The extension of the bearing trunnion housing
supports the rear bearing holding the shaft. A
grease seal is mounted to prevent escape of
grease. The bearings are permanently lubricated
and need no maintenance.
Fig.
32
Clamping sleeve
Pulley
Rear bearing
Bearing housing
Shaft
Sealing rings
Bushing
Front bearing
Drum
Back gable
Rotation guard