Okuma Howa 550H

6000 rpm
Stator driven
Spindle was crashed, shaft nose was cracked, rotor came loose and rubbed out on rear housing. Rear housing was egged shaped. The taper had 20+ microns of runout.
Northland Tool & Electronics replaced the bearings, ground/plate/ground the rear housing and 50 taper. Kiss ground the front journal and shoulders. Welded and machined the cracks in shaft nose.

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