A client has this monstrosity for a piece of machinery. It's always been problematic for them and I feel the whole thing is just poorly designed.
Anyway the shaft keeps walking in these pillow blocks but they said the present spacing was appropriate, so I machined two spacers (left and right) such that when I pressed the top bearing both bearings traveled together. You can see the line where it was:
The manufacturer of said equipment told them there should be divots in the shaft where the set screws reside, but there are none. Of course the manufacturer gave them the, "It's the first time we've heard of this" line
They wanted me to create divots so I thru-drilled one of the 7/16-20 set screws on the lathe. I then installed this crude guide into every hole and drilled a 9/64" starter hole, then removed the set screw and hand drilled 5/16" (which is about the major diameter of the set screw cup point). I was able to do them all without damaging the female threads
Here you can see my crude guide and the shaft has been drilled 5/16" in the hole:
Anyway the shaft keeps walking in these pillow blocks but they said the present spacing was appropriate, so I machined two spacers (left and right) such that when I pressed the top bearing both bearings traveled together. You can see the line where it was:
The manufacturer of said equipment told them there should be divots in the shaft where the set screws reside, but there are none. Of course the manufacturer gave them the, "It's the first time we've heard of this" line
They wanted me to create divots so I thru-drilled one of the 7/16-20 set screws on the lathe. I then installed this crude guide into every hole and drilled a 9/64" starter hole, then removed the set screw and hand drilled 5/16" (which is about the major diameter of the set screw cup point). I was able to do them all without damaging the female threads
Here you can see my crude guide and the shaft has been drilled 5/16" in the hole: