Replacing Spindle bearings on a Mill Part 2
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- Опубликовано: 11 ноя 2021
- In part 2 of replacing spindle bearings on a milling machine I will briefly cover setting pre load and end float on the spindle. After that I will quickly run through the assembly of the mill and finish the video of by checking the runout of the mill.
I don't often do these type of videos so apologies if I have missed parts you wanted may have wanted to see.
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Nice Vid Joe, and a prompt for me to drop my spindle out for a regrease and preloaded adjustment 👍
Nice work Joe, just monitor the temperature , it should get a little warm until the bearings bed in a bit ( common with a small preload on the bearings) . Also do a failure analysis on the old bearings, you said they were notchy , I would look for false brinnelling which may be obvious under magnification, this would confirm your suspicions you spoke of. Enjoyed the video, cheers!
Great bit of advise there Howder. Never thought about looking at the bearings under a microscope so will have to test how good the camera is on these iPhones at real close ups.
Great video, thanks! I'm pretty sure you can do this job without removing the quill and all. Just remove the top and bottom spanner nuts. At least that's the way most Bridgeport-type mills are. Saves a lot of work!
Hi Gregg just from memory I can’t remember if the not but Is visible of it is though your method would be a lot easier for sure.
@@MachiningwithJoe I was wrong...not so easy! Had to take the entire quill assembly out. Harbor Freight/Central Machinery mill
Very good runout. I recently converted a 4-speed machine to a 12-speed. The new center pulley's bearings sound like a steam engine. May need to be replaced.
Thanks felix I am happy with the results just need to test the run out directly on the spindle nose for a true reflection.
Sounds Good, it has to make a little bit of noise, it is a mechanical object. :-) Yes the taper rollers will need a little tweak, won't be much, but they will need it. Don't know why, but it reminded me of when I was in the toolroom at BR and the Electricians were doing a bit of maintenance on the Horizontal Mill that I was on at the time, they asked me to put a BIG cut on, I selected a lump of mild steel that was lying about, threw it in a vice and attacked it with a big strong cutter, when it was on max power I got worried, the rotten dogs (electricians) could turn the feeds up in the control box. I shouted for them to STOP what they were doing, they were casual in saying 'wassup' I said you asked for a max cut, if you push it any more there is going to be a stack up. Ha Ha, they stopped
Thanks yeah being a gear driven head there is always going to be a bit of noise but I’m happy how it sounds now.
That amount of runout is negligible, you did a good job there.
Did you request a certain ABEC rating or anything for the bearings you ordered?
Not enough run out or noise to for further action. Well done.
What happened to putting a piece of plywood on the table, it needn't be wood plastic is good, a few layers of cardboard will do. But do something!.
Hi Fred thank you, unfortunately I had already filmed this by the time I had seen your previous comment from part 1. I will be sure to protect the table from now on thanks again.
Bravo, 👷♂️ very interesting and informative video "Innovation is not born of a dream, 💡
Innovation is born of struggle. ”🤠 I hope you will enjoy my videos too👍💐🛠
Thank you glad you enjoyed the video and welcome to the channel. Hope you find the rest of my content as interesting and informative