Howard Randolph
Plastic
- Joined
- Jan 6, 2017
I am trying to refurbish a 1967 Delta Rockwell drill press model 17-600. The lower spindle shaft has a threaded collar at the end just above the Jacobs taper. It is used in conjunction with a special Jacobs chuck with matching female threaded collar that is used to pull the Chuck onto the taper and keep it there.
The collar on the spindle shaft is pinned in place and the collar is what holds the lower bearing assembly in place. The hole for the pin is slightly off center.
Problem is I mangled the pin on my first attempt to reinstall the collar after doing a bearing replacement. Also the collar is a very tight fit and I am stumped as to how to put it on and have the pin holes perfectly aligned.
The through hole seems a weird size. I can fit a 4.5mm drill bit through with some play but not a 5mm or 3/16".
I am not a machinist so I am reaching out to anyone who can help.
What type of pin would you say this is?
I could use a split spring pin but am concerned about shear strength compared to a solid pin.
Any suggestions and insights are greatly appreciated.
Thanks
The collar on the spindle shaft is pinned in place and the collar is what holds the lower bearing assembly in place. The hole for the pin is slightly off center.
Problem is I mangled the pin on my first attempt to reinstall the collar after doing a bearing replacement. Also the collar is a very tight fit and I am stumped as to how to put it on and have the pin holes perfectly aligned.
The through hole seems a weird size. I can fit a 4.5mm drill bit through with some play but not a 5mm or 3/16".
I am not a machinist so I am reaching out to anyone who can help.
What type of pin would you say this is?
I could use a split spring pin but am concerned about shear strength compared to a solid pin.
Any suggestions and insights are greatly appreciated.
Thanks