A worn bore in a large, custom-cast housing: Rebuilding the area restores the bearing fit without having to remanufacture the housing.
Bearing housing bores become oval or wear out over time due to cyclic loads and repeated bearing installations, while the rest of the cast-iron housing remains dimensionally stable.
DED allows these bores to be locally rebuilt to restore their original diameter and fit with the bearings—a repair that is far less expensive than replacing a large housing, which is often custom-cast and has a long lead time.
This approach is particularly beneficial for large or older-model gearboxes, where a replacement housing is not always available from standard stock. The process also allows for the repair of parting surfaces damaged by corrosion or impact, restoring static sealing without requiring a complete remanufacture of the part.
