Removing And Installing The Protecting Ring - Siemens 1PH818 Operating Instructions Manual

Three-phase induction motor ac compact drives
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● Note that these joints between parts (e.g. the sealing gap on the active part of the
● Check the sealing elements fitted (e.g. at the terminal boxes) and replace them if they do
● Follow the manufacturer's application and safety instructions when using the sealant.
● Replace parts that are subject to wear such as the adjusting springs.
Installing the active parts of the bearings
1. First position the parts that must be arranged on the shaft within the bearing.
2. To fit the bearings on the shaft, heat them up to about 80 °C in oil or air.
3. Then push the bearings onto the shaft up to its shoulder. Avoid any heavy blows that
4. Fill the bearing to the top with the specified lubricating grease (Page 59).
9.2.3

Removing and installing the protecting ring

The protecting ring acts as an outer bearing seal. It sits on the shaft outside the bearing end
shield.
Disassembly
● Once the coupling is detached, you can remove the protective ring from the shaft. After it
Assembly
● Push the protecting ring over the end of the shaft. Make sure that the outer collar is
A5E02605207A AA
Siemens AG Operating Instructions V1.0 1PH8
bearing) must also be resealed with a suitable, silicone-free sealant during assembly.
not provide an adequate seal.
might damage the bearings.
has been removed, the protective ring will be deformed and must be replaced.
placed at a spacing of 1 mm from the bearing end shield.
Figure 9-2
Fitting the protecting ring
Maintenance
9.2 Repair
63

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1ph8221ph8281ph818 series1ph822 series

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