Ash Crusher Repair

Pump Supply & Repair Group have recently undertaken the repair of a coal ash crusher on behalf of a UK power station. The crusher was found to be in a poor condition after many years of service. Impact damage was found to the rotor hubs which needed to be corrected by carrying weld repairs using stelite impact HS360 rod.

Other areas of concern included wear to the shaft locations and wear to the gland sleeves. these areas were spiral welded and machined. Both gears were also found to be worn with excessive clearance found between the teeth. New gears were manufactured and fitted then new side sections were fabricated and fitted to badly eroded areas.

Internals and externals of the hopper box were grit-blasted. The unit was then rebuilt with new copper bearing assemblies, new sets of packing rings and new gasket & shim sets.

We have modified the main problem area which was the primary cause of bearing failure – gland leakage – fitted new labyrinth seals and large shaft throwers to deflect debris away from bearings.