Saturday, September 5, 2009

Air End Repair -AC - 03/Sept/2009

Common Air End Failure and Repair







WHY ?
Its Bearings need to replace regularly ?

The bearings are to hold both the rotors in horizontal position;
they are not to rub against each others.

















A failed Rotary Screw Air Compressor's Air End:= Atlas Copco GA132, we dismantle on Thursday, 3rd September, 2009 from a factory in Prai Industrial, Penang. 

 A female rotor of the twin screw rotary screw air compressor. 
The male [drive rotor], note; the DE bearing side. 


  


Four Point Ball bearing position and set clearances of rotors end cover clearances !!!!!



  



  Air End Bearings:= 



 Types and size of bearings: 
QJ 315 = 2 sets 
NU 315 ECJ/C3 = 4 sets 

 Note:= 
There are three types of bearing cage to choose from, there are NU 315 ECJ = Steel cage 

NU 315 ECP = Polyamide cage [ a type of plastic material ] 
NU 315 ECM = Brass cage

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