Doosan Series Repair
Doosan NHM / NHP / HC Horizontal Spindle Repair & Grinding
Horizontal-machining spindles on NHM 4000 through 8000, NHP 4000 through 6300, and HC 400/500 sit oriented for chip drainage. Pallet-changer thermal cycling drives specific wear patterns. The larger NHM-8000 has a heavier-duty spindle to match the heavier axial cuts; smaller NHM-4000 and NHP-4000 see more pallet-cycle bearing wear.
Models in this series we service
- NHM 4000
- NHM 5000
- NHM 6300
- NHM 8000
- NHP 4000
- NHP 5000
- NHP 6300
- HC 400
- HC 500
Common failure patterns
- Bearing-pack wear from sustained pallet-changer production.
- Larger spindle bearing wear on NHM-8000 from heavy axial cuts.
- Spindle thermal cycling from pallet rotation.
- Taper damage from high-cycle ATC sequences during pallet changes.
Controls used on this series
NHM, NHP, and HC ship on Fanuc 30i (Doosan) — the multi-axis pallet handling fits the 30i family's parameter set.
Lead time
Lead time depends on the model, the failure mode, and parts availability. Diagnostic is fast; full rebuilds run 3 to 5 weeks on most jobs. We scope each job individually rather than quoting a generic window.