Niigata SPN 40 Spindle Rebuild

Jesse Riccardi General Manager

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Possible cause of failure:
Catastrophic failure of #1 and #2 front bearings.
Shaft 40 taper is below gauge line.
OD of shaft nose has a large dent, drive dogs have light cosmetic wear.

Repair action:
Clean, inspect overall dimensions.
Grind, plate & regrind shaft 40 taper.
True bearing spacer shoulders.
Replace bearings & o-rings.
Adjust preload, balance, assemble and break in. Final quality control inspection.

Jesse Riccardi General Manager

With over 15 years of spindle rebuilding experience, training, and shop management, Jesse specializes in partnering with industry leaders to advance and improve the precision machine service market.