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Reelmaster 3550−D
Cutting Units
Page 7 − 33
Roller Service
Disassembly (Fig. 42)
1. Remove bearing lock nut from each end of roller
shaft.
2. Loosely secure roller assembly in bench vise and
lightly tap one end of roller shaft until outer seals and
bearing are removed from opposite end of roller tube.
Remove second set of outer seals and bearing from roll-
er tube by tapping on opposite end of shaft. Remove
shaft from roller tube.
3. Carefully remove inner seal from both ends of roller
tube taking care to not damage tube surfaces.
4. Discard removed seals and bearings.
5. Clean roller shaft and all surfaces on the inside of the
roller tube. Inspect components for wear or damage.
Also, carefully inspect seating surface and threads of
bearing lock nuts. Replace all damaged components.
Assembly (Fig. 42)
1. Install both inner seals into roller tube making sure
that seal lip (and garter spring) faces end of tube. Use
inner seal tool (see Special Tools in this chapter) and
soft face hammer to fully seat seals against roller shoul-
der (Fig. 43). Apply a small amount of grease around the
lip of both inner seals after installation.
IMPORTANT: During assembly process, frequently
check that bearings rotate freely and do not bind. If
any binding is detected, consider component re-
moval and reinstallation.
2. Install new bearing and outer seals into one end of
roller tube:
A. Position a new bearing into one end of roller tube.
Use bearing/outer seal tool (see Special Tools in this
chapter) with a soft face hammer to fully seat bearing
against roller shoulder (Fig. 44). After bearing instal-
lation, make sure that it rotates freely with no binding.
B. Apply a small amount of grease around the lip of
both outer seals.
C. Install first outer seal into roller tube making sure
that seal lip (and garter spring) faces end of tube.
Use bearing/outer seal tool (see Special Tools in this
chapter) and soft face hammer to lightly seat seal
against roller shoulder (Fig. 45). Make sure that
bearing still freely rotates after seal installation.
D. Using the same process, install second outer
seal making sure to not crush the previously installed
installed outer seal. Again, make sure that bearing
still freely rotates.
1. Roller tube
2. Roller shaft
3. Inner seal
4. Bearing
5. Outer seal
6. Bearing lock nut
7. Grease fitting
Figure 42
6
3
5
4
2
1
7
50 to 60 ft−lb
(68 to 81 N−m)
6
3
5
4
2
1
7
1. Roller tube
2. Inner seal
3. Inner seal tool
Figure 43
3 2 1
1. Roller tube
2. Inner seal
3. Bearing
4. Bearing/outer seal tool
Figure 44
3 2 1
4
DPA Cutting
Units