Siemens 580 用户手册
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Maintenance
11. Lubricate. Turn motor by hand to be sure of
proper fit and oil ring operation.
12. Start motor without load and check oil ring
operation.
Figure 8.
Sleeve bearing construction with
labyrinth-type oil seals-580 Frame.
880, SH400, SH450, and SH560 Frames (See
Figure 9)
1. Check replacement bearings for nicks or
shipping damage. Do not scrape.
2. Carefully remove the bearing housing cap by
first lifting straight up, then pulling away from the
bearing area.
bearing area.
3. Remove top half of bearing liner.
4. Remove the bolts at the split line of the oil ring.
5. Remove bearing temperature probes if so
4. Remove the bolts at the split line of the oil ring.
5. Remove bearing temperature probes if so
equipped.
6. Raise the shaft slightly and support it.
7. Rotate the lower bearing half 180° and remove
7. Rotate the lower bearing half 180° and remove
the lower half of the bearing.
8. Reassemble, reversing the steps above. Apply
sealant. The side faces of the labyrinth seals
must be sealed with CURIL-T or equivalent non-
hardening sealing compound. Be careful not to
disturb or jam the seals when replacing the
upper half of the bearing capsule.
must be sealed with CURIL-T or equivalent non-
hardening sealing compound. Be careful not to
disturb or jam the seals when replacing the
upper half of the bearing capsule.
9. Lubricate. Turn motor by hand to be sure of
proper fit and oil ring operation.
10. Start motor without load and check oil ring
operation.
End Float – Sleeve Bearings
Control of rotor end float in sleeve bearing motors is
maintained in the drive end bearing. The total end
float is 0.5 inch. On the 500 and 580 frames the
bearings are located axially by shims between the
bearing bushing and the housing shoulders in the
lower half of the housing. On the 880, SH400,
SH450, and SH560 frames the shims are located
between the bearing housing mounting
flange and the bearing bracket. The shims permit
the bearing
to be adjusted axially to maintain coincidence of
electrical and mechanical center. Any adjustment of
the axial position of one bearing should be
accompanied by the same axial adjustment of the
opposite end bearing.
the bearing
to be adjusted axially to maintain coincidence of
electrical and mechanical center. Any adjustment of
the axial position of one bearing should be
accompanied by the same axial adjustment of the
opposite end bearing.
The coupling should limit the end float of the shaft to
±0.18 inch from the mechanical center. The limited
end float coupling prevents the rotor from rubbing
against the bearing shoulders during operation.
±0.18 inch from the mechanical center. The limited
end float coupling prevents the rotor from rubbing
against the bearing shoulders during operation.
Figure 9. Sleeve Bearing
Construction 880, SH400, SH450,
and SH560 Frames.