At High Speed Technologies, Inc. we repair Mori Seiki NH 5000 Spindles to original factory condition. Our repairs come with a one year warranty.
This spindle was sent to us because the front bearings were damaged from contamination. Our comprehensive evaluation showed that the spindle had excessive run out at the taper ID. The contact area on the taper was damaged and tool contact was well below acceptable limits.
Mori Seiki NH 5000 Spindle ready to ship
As we dismantled the spindle we found that contamination had migrated past the front seal and migrated into bearings #1 and # 2. This link speaks to some of the problems associated with high speed spindle seals.
# 2 Bearing badly contaminated
Mori Seiki uses a special quad set of bearings with tolerances specific to this model spindle; so not just any bearings will work.
The taper ID was damaged bad enough to require our GPG process to restore it. This machine had a Big Plus taper. HST is a certified Big Plus repair house. To comply with Big Plus specifications HST must grind to extraordinarily tight tolerances.
We always ship the Mazak NH series spindles with a new Super Precision rear roller bearing. With this series spindles the rear roller must be installed on-site by a qualified technician.
|Mori NH 5000 parts cleaned and ready
|Mori Seiki NH 5000 Big Plus
|HST is Big Plus Certified.|