First spindle arbour I have been able to see on YT, thanks. Of course the one I might be dealing with is from a full sized 60's vertical mill . But this just what the doctor ordered as I decide on whether to spend $500 on regrinding the B&S#9 to an R8
Russ, glad to see you back! I hope your cold decides to leave soon. Lots of cleverness in this video...from the pin spanner to the use of an endmill as a boring bar. The mod of the bearing puller was cool too...only advantage to cheap tools...you don't mind cutting on them when you need to! I'm still wishing for a mill, but I recently bought a used South Bend 9" lathe so I'm having fun trying out some of what I've been watching for months. It's amazing what you can learn on RU-vid. Thanks for sharing your upgrade experience...I know I'll be watching it again someday when I get that mill. -- Mike
Thank you very much! It was a bit of a nightmare and also nice to overcome. Very cool about you lathe. I would love something old like a Southbend or even an atlas. I'll probably be going bigger next time :)
I took a pair of slip joint pliers and drilled a hole in each jaw, threaded the holes 8-32 IIRC and used 2 SHCP's to engage the ring. Unscrew the screws and the pliers function as normal. The slip joints and the fact that they are pliers allows possibilities of large rings too.
Thanks! It makes a horrible nightmare of a chip, but you can really plow through material. This was a 2 flute high speed steel end mill intended for use in aluminum only.
So far so good, I think I set the upper spindle too deep in the head though. It wasn't spinning smoothly so I tapped it back up a hair and now it seems better. We'll see how it goes once it's run in a bit. Definitely much quieter than it was and measuring runout on the inside of the R8 taper I'm getting less than 0.001".
Russ, I'm in the process of replacing the bearing on a Okamoto surface grinder. YES, it does have a big effect on how much lubricant you use on bearings. While it may not have very much effect on the stock machine it will when you keep upping the RPM's such as you stated. Do yourself a favor and do some research. It's different for each type of bearing, size, speed, and load. Good luck.
+Mike C. Thanks Mike. I spent a bunch of time working that out using the Kluber specifications for my bearing size, RPM, etc. In the end, it was to difficult to get a precise amount on the bearing so I guess we'll see how long it lasts :)
Cool, thanks Russ. I just did this upgrade a few weeks back. Interesting that your retaining nuts were on there so tight, Mine came off pretty easily. My mill i only 3 months old, so maybe they tighten up with time? Yea, it was painful for me to order that Kluber grease also, and I used a similar serenge/needle setup. Looking forward to your next video...
I don't mean to sound like a familiar broken record, but studies have demonstrated that vitamin C does significantly reduce the length of colds, in many cases as much as half. It's always worth it to make sure you get a good dose of it every day while you have a cold.
Good video russ, i'm in the middle of converting my G0704 to CNC and will be doing the belt drive in the future. Once you post all the videos and work out the kinks:).
If you need a pin spanner just drill 2 holes in the end of a piece of thick walled scrap DOM pipe then insert some steel spin stock than slide that over the spindle shaft and turn the nut out.
Hi Russ- I broke-down my spindle today and found that your video was spot on. I did make a pin spinner per your pictures. Never did find your drawing, but got concept and made it using 9/16 round stock, worked like a champ. I wanted to ask you if you, or anyone else has figured out a way to grease these spindle bearings? When I disassembled I found grease everywhere inside the spindle, except for on the bearings.. my machine is only about a year and a half old, but bottom bearing was really getting hot even running with no load. But I can sure se why now that I found it bone dry. I am really surprised that it didn't seize. Thanks for the video Howard
Hey Howard. I'm glad the video was helpful, and yes it looks like my Dropbox is missing the files for the spanner I made. I'll try and get that added if I can find it. As for the bearings, I just rebuilt my spindle again because I smoked my lower bearing too (I'm pretty sure my flood coolant washed out all of the grease) and I bought a set of syringes to get the grease inside the bearings: www.amazon.com/gp/product/B01ECIVAFE
just place the quill/spindle assembly in the vise. next use the spindle lock tool and a hammer. place the tool in the pin holes (not the threaded holes) on washer nuts and lightly tap with a hammer counter clockwise
Pretty sure they used a screw to index the collet, so that when you eventually manage to jam it up there hard and break it off... you can at least repair it instead of replacing it! :)
why did you change out the taper bearing for a roller bearing on the mill shaft ? they use a taper bearing on the work end of the shaft so the side play can be taken out through bearing load adjustment. I don't understand why you changed this ? any side play you have or develope over time from wear you now cannot remove because the taper bearing is on the wrong end of the shaft.
I really don't remember. I think Hoss did it to his and I figured why not. The AC bearings had large runout though so I eventually went back to tapered.
Like the tool, tryed to make the same but with screws, seems that the cup is pretty tight to unscrew ti with a bolt, all bolt's bended and i will try to turn some tool, did you use mild steel for the pind or something else?
Hoss web site, link in the description. For the spindle he says ".5cc for the upper and 1cc for the lower bearing". I tried to use the syringe method to get my grease installed, but had little luck. In the end I just put some in and have no idea how much it was. The idea is to use a small amount instead of packing them full.
hi i want to make spindle and drow bar to my homemade mill machine can you tell me the size of spindle ..bearing ..drow bar thread ets or if you have plan or Sketch to make the mill head ?? thanks
The bearings are mentioned in the video, so you should be able to find the specs online pretty easily. As for the head, spindle, and drawbar, I do not have detailed drawings but I know there is a guy online who sells a very detailed model of the BF20 mill, which is similar to my G0704. I can't seem to find it though so you may need to just spend some time searching. I think he sells the CAD model for $20 or so.
Hi Ross, just buy my mill and would like to start changing parts. I would like know if you can give me in writing the name of the webside because I have problems with my English thanks
hello sir, I need your help,,,,, spindles always fascinates me,,,,,,can you guide in basics of spindle design. because its in field of spindle design wish to make my carreer
+niketan zode I'm not really the guy to ask, as my own experience with spindles is rebuilding this one. I am sure there is a lot of good information on the internet but you'll have to do some digging. Good luck.
You and a lot of your viewers may already know this, but for the rest, they can pick up an adjustable spanner wrench at any accomplished tool shop or online. www.google.com/search?q=Adjustable+Face+Spanner&rlz=1C1TSNP_enUS610US610&oq=Adjustable+Face+Spanner&aqs=chrome..69i57&sourceid=chrome&es_sm=122&ie=UTF-8
Thanks for the link! I checked everywhere in my area and couldn't find one that came close to fitting this job. If anyone has a link to a spanner they have used on this rebuild I will be happy to annotate the video :)
russtuff You're welcome. Just about any of those wrenches annotated in the link would work. However, it helps to get the right pin size, to avoid slippage and bent knuckles. I used to use these a lot when I was in the military, repairing weapons.
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