We have modified these Miyano spindles to incorporate an air purge to reduce the amount of contamination that is allowed into the spindle. This will increase the life of the spindle considerably. We try to keep our customers informed of why their spindle failed and suggest corrective actions to improve their spindle life. Sometimes that is as easy as installing an air purge. In some cases we need to review the customers process with them and visit the facility to decide on the best repair options for their particular situation.
Possible cause of failure:
Liquid contamination throughout. Front bearings got hot.
Cogged pulley very worn, aluminum pulley is damaged.
Clean, inspect overall dimensions.
Replace bearings and orings.
Replace timing pulley.
Replace belt pulley
Adjust preload, balance, assemble and break in. Final quality control inspection.
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Catastrophic bearing failure was the main cause of this spindle malfunction
Continue reading to learn how Northland Tool performed this repair and converted a Weiss GHK 176239 spindle from grease-injected to permanent grease lubrication…