Greetings,
I recently tore apart my spindle on a mill I got, It had been sitting sometime. Its a Milltronics Partner 1D (The bearings had rusted inside an Im doing a Yaskawa Retrofit)I have not rebuilt a spindle before and budget does not allow for me to out source. I have got talked to Milltronics and managed to get the bearings specs I need, Ordered NSK bearings. Im aware how to grease the bearings. Dont need to touch on that. What I am looking for advice on is how to get the shaft back into the cartridge without hurting the bearings and making sure that the spindle doesn't turn into a noisy heater after. Currently Cartridge is still in the Z axis. I was able to pop everything apart. I thought if I leave the cartridge in the Z axis I have the "hydraulic press" I need if I introduce a bottle jack on the table.(I dont have a press, but need be I can get access) I have a lathe I can make anything I need to for pressing the bearings on correct shoulders and such. Its 2 flush angular contact bearings on bottom with a nut holding them down and 1 deep grove ball bearing on top (no fastener). KEEP IN MIND!!!: This is not a 40hr a week machine. This thing may run a couple hours a week and no big production line is waiting on it. If the spindle would last 2 years at that duty cycle Id be pumped. By then I would be able to justify a professional rebuild. If I knew the mechanical steps to do this Id be more confident.
What can I do to ensure the bearings go in well?
Should I be looking into the Drawbar Spring Washer condition before reassembly?
Is it dumb not to get taper reground?
Was it dumb for me to try this?
What else am I not thinking of?
Edit:
should I press A/C bearings onto shaft, press ball bearing into cartridge, put shaft and A/C assemnly into freezer then try to pressing shaft into cartridge?
do I need to support inner race of the upper ball bearing while pressing shaft through if I follow above method?
Is cooling shaft a bad idea due to condensation?
Any and all help greatly appreciated.
Thanks
I recently tore apart my spindle on a mill I got, It had been sitting sometime. Its a Milltronics Partner 1D (The bearings had rusted inside an Im doing a Yaskawa Retrofit)I have not rebuilt a spindle before and budget does not allow for me to out source. I have got talked to Milltronics and managed to get the bearings specs I need, Ordered NSK bearings. Im aware how to grease the bearings. Dont need to touch on that. What I am looking for advice on is how to get the shaft back into the cartridge without hurting the bearings and making sure that the spindle doesn't turn into a noisy heater after. Currently Cartridge is still in the Z axis. I was able to pop everything apart. I thought if I leave the cartridge in the Z axis I have the "hydraulic press" I need if I introduce a bottle jack on the table.(I dont have a press, but need be I can get access) I have a lathe I can make anything I need to for pressing the bearings on correct shoulders and such. Its 2 flush angular contact bearings on bottom with a nut holding them down and 1 deep grove ball bearing on top (no fastener). KEEP IN MIND!!!: This is not a 40hr a week machine. This thing may run a couple hours a week and no big production line is waiting on it. If the spindle would last 2 years at that duty cycle Id be pumped. By then I would be able to justify a professional rebuild. If I knew the mechanical steps to do this Id be more confident.
What can I do to ensure the bearings go in well?
Should I be looking into the Drawbar Spring Washer condition before reassembly?
Is it dumb not to get taper reground?
Was it dumb for me to try this?
What else am I not thinking of?
Edit:
should I press A/C bearings onto shaft, press ball bearing into cartridge, put shaft and A/C assemnly into freezer then try to pressing shaft into cartridge?
do I need to support inner race of the upper ball bearing while pressing shaft through if I follow above method?
Is cooling shaft a bad idea due to condensation?
Any and all help greatly appreciated.
Thanks