Common Industrial Blower Problems & Reasons For Failure

We've been rebuilding industrial vacuum truck blowers since 1970 and we've seen it all when it comes to mechanical failures with industrial blower units.  Whether it's a lack of maintenance, poor assembly practices, lack of lubrication, incorrect shimming, and various other reasons, we are able to repair or rebuild blowers from almost any manufacturer.


Evidence of heating can be seen externally on this head plate.  This hot spot was the result of excessive rotor end play from improper shimming.


Rotors have expanded in this unit and contacted the gear side head plate resulting in burning.


Some head plates, however, cannot be repaired.  The cracking to this 1024RAS-J head plate was unusually severe and the head plate needed to be replaced.


Heat Effect On Rotors (1021RAS-J Rotor).  This bluing typical of contact with the head plate.


The rotor on this 1021RAS-J blower had light burning.  Lengthening of the rotor was unnecessary and it was easily repaired.


In this case, heating has caused the rotors to expand and contact each other, along with the head plate and cylinder.  Rotors will expand from overheating and come into contact with parts they shouldn't.


Damaged filters have allowed material into this Sutorbilt 1016 blower.


Inlet side contamination caused the failure in this Roots 1125 Trinado blower.


Material can easily build up in uncapped rotors.  If the build up is large enough, there is potential for an unbalance condition as was in this Roots-Dresser 824.


Heavy particulate build up in capped rotor ends caused this Roots 1024RAS-J Rotor to fail.

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