Siemens 580 Benutzerhandbuch

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Protect the shaft end with a cap. If bearing is reusable, 

make certain the puller applies pressure against the 

bearing inner race only. If puller will not hook the bearing 

inner race, fabricate a split bushing and install it between 

the bearing and the puller hooks. 

 

Figure 6.  Removing Bearing with a Puller 

 

Sleeve Bearing 
When replacing sleeve bearings, it is always 
desirable to check the fit (contact pattern) of the 
bearing to the shaft.  When ordering sleeve 
bearings, be sure to provide complete motor 
nameplate and bearing data. 
 
Whenever a bearing is replaced, cleanliness must 
be observed through every step of the operation. 
 
Always inspect the bearing journal surfaces; they 
must be smooth and polished.  Slight scoring can be 
removed with crocus cloth.  If the motor shaft has 
been seriously scored it must be put between 
centers and reground.  Journals can be ground 
0.001 inch under size, but they must be round and 
concentric with shaft center. 
 
Sleeve Bearing Replacement 
The replacement of sleeve bearings can often be 
accomplished without uncoupling the load or 
otherwise disturbing the installation. 
 
500 Frame (See Figure 7) 
1. Check replacement bearings for nicks or 

shipping damage.  Do not scrape. 

2.  Remove the upper half of the bearing bracket. 
3.  Carefully remove the top half of the bearing 

capsule by first lifting straight up, then pulling 
away from the bearing area. 

4.  Remove the top half of the sleeve bearing. 
5.  Remove bearing temperature probes if so 

equipped. 

6.  Displace the oil rings axially away from the 

bottom half of the sleeve bearing. 

7.  Raise the shaft slightly and support it. 
8.  Rotate the lower bearing half 180° and remove 

the lower half of the bearing. 

9.  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. 

10. Lubricate. Turn motor by hand to be sure of 

proper fit and oil ring operation. 

11. Start motor without load and check oil ring 

operation. 

 

Figure 7.  Sleeve Bearing Construction with 

Floating Type Oil Seals-500 Frame 

580 Frame (See Figure 8) 
1. Check replacement bearings for nicks or 

shipping damage.  Do not scrape. 

2.  Loosen outer oil seal and remove. 
3.  Remove the two long bolts (2:00 and 10:00 

o’clock positions) that go through to the inner oil 
seal. 

4.  Remove the upper half of the bearing capsule. 
5.  Remove the top half of the sleeve bearing. 
6.  Remove bearing temperature probes if so 

equipped. 

7.  Displace the oil rings axially away from the 

bottom half of the sleeve bearing. 

8.  Raise the shaft slightly and support it in that 

position. 

9.  Rotate the lower bearing half 180° and remove 

the lower half of the bearing. 

10. Reassemble, reversing the steps above.  Apply 

RTV silicon rubber or Permatex #2 sealant.