Rotor Shaft Failure & Repair

Rotor Shaft Failure & Repair

Note:
The worn out bearing seat on pinion shaft.
Cause local vibration to compressor package!


Hitachi Twin Screw Compressors



75kW Compressor



1. If Rotor Shaft is Broken.
2. Worn out shaft, usually on DE bearing seat.



1. Broken Rotor Shaft

Replaceable Rotor Shafts



Replaced Rotor shaft


Group Photo


2. Worn out DE side of bearing seat







After Metalizing and machine to Rotor shaft



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Another Sample

Sample of Atlas Copco GA75 Rotor Shaft failure at gear box:
Note the fail Drive gear & rotor shaft!

A close-up picture!



Peel of part of drive-end Rotor Shaft near key way?

Finally, the Drive shaft Shaft -- Exposed!