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Post Drill, cracked down-feed thrust bearing
Hello everybody ~
I'm fixing up a Buffalo No. 61 Post Drill and have a question for the machinist types. Any guidance would be much appreciated. Pics are attached.
The lower end of the up/down feed screw connects and transfers thrust to the top of the drill spindle through, apparently, a single pair of fixed ball bearings. One bearing is set into the lower end of the feed screw and one bearing is set into the upper end of the spindle.
The ball bearing the top of the spindle is cracked about in half, and the ball bearing on the lower end of the feed screw is worn flat-ish. Neither ball bearing spins and I suspect they were never meant to. Without any real load, the up/down feed operates smoothly despite the cracked bearing. I'm holding off on any real use, pending the advice of my betters.
Questions are: How can I fix this? How did those bearings get in there in the first place? How to extract and then properly replace? I'm a reasonably competent mechanic and have access to a metal shop, but is this a repair that requires a pro or specialized equipment?
Thank you much for reading and considering. May thee and thine be well ~ thom. k
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