Well, it's a Feeler FTL-618EM, but I like so much to call it a Hardinge :-)
The spindle would make funny noises at RPMs above 2000 and TIR was as much as 0.0005" on both - inner and outer tapers. It produced nasty finishes on everything except 4140.
As if my life was not challenged enough, I started to slowly disassemble the headstock with intention to check out grease in the bearings.
In a creative impulse of violence, I didn't notice myself how the spindle was taken apart down to a smallest piece.
The rear bearing feels OK, but the front one gives a lot of roughness, like if balls were square-shaped. It would also spin 10-20 revolutions if I push it by hand.
What is the diagnosis? Re-lubrication? Replacement?
On the last photo is a tool that I made to undo the spindle nut.
Thanks!
![Click image for larger version.
Name: IMG_9229.jpg
Views: 82
Size: 89.5 KB
ID: 247011]()
![Click image for larger version.
Name: IMG_0808.jpg
Views: 81
Size: 94.2 KB
ID: 247012]()
![Click image for larger version.
Name: IMG_3361.jpg
Views: 82
Size: 96.7 KB
ID: 247013]()
![Click image for larger version.
Name: IMG_8995.jpg
Views: 80
Size: 95.9 KB
ID: 247014]()
The spindle would make funny noises at RPMs above 2000 and TIR was as much as 0.0005" on both - inner and outer tapers. It produced nasty finishes on everything except 4140.
As if my life was not challenged enough, I started to slowly disassemble the headstock with intention to check out grease in the bearings.
In a creative impulse of violence, I didn't notice myself how the spindle was taken apart down to a smallest piece.
The rear bearing feels OK, but the front one gives a lot of roughness, like if balls were square-shaped. It would also spin 10-20 revolutions if I push it by hand.
What is the diagnosis? Re-lubrication? Replacement?
On the last photo is a tool that I made to undo the spindle nut.
Thanks!
