[photomankc]

1.073 would give you a loose class 2B thread, I used a 1.0625 bore for the best class 3B thread with the tap.
Easy as pie, took about 3 seconds to power tap it on the lathe.
Don't trust your chuck, indicate the part face with a DTI.
Hoss

Thanks! Glad I stopped where I did. I'll see if the local shop here has an internal threader. Otherwise I'll order up something. That threader/groover looks pretty interesting.

[Starleper1]

They also make external top notch holders that can do the same.

[photomankc]

They also make external top notch holders that can do the same.

I've got an external guy from AR Warner. I just never have had a cause to do internal threads yet.

[hoss2006]

Have you seen this, only $20.
Z ballnut mount
AM

2 left and then that's it.
Will be no longer available.
Hoss

[diyengineer]

Finally received my R8 conversion so now i can go ahead and swap those new bearings in. I ordered those shims from mcmaster as you advised. does it matter if the shims go above or below the bearing? Or as long as the thickness is good its good? Will i have to press these in or should i be able to get them in by hand?

Thanks Hoss.

I will have to send you a picture of this one part as well, they might have sent me the wrong quill sleeve lower black screw in part.. Thank goodness my MT3 one fits the R8 one though. The one they sent me is like a 1/2 size replica...


EDIT:
Apparently im having issues with the "spindle ring" i think they shipped the wrong part?

Attached is a picture.. I can account for everything else, except this spindle ring.. The thing is there is no spindle ring that came off the MT3 or R8 spindle i already had... Im confused lol..

Part 274 "spindle ring" $4.50

I have a video that i will post later tonight.
Video:
[nomedia="http://www.youtube.com/watch?v=MA8GVZt71xk"]YouTube - Grizzly G0704 Highspeed Bearing upgrade Part 1.[/nomedia]

[CADScott]

I ordered the R8 conversion stuff also (Thanks diyengineer for the help!). Grizzly of course do not have them in stock, so will have to wait to 11th Jan for my bits.

[diyengineer]

I ordered the R8 conversion stuff also (Thanks diyengineer for the help!). Grizzly of course do not have them in stock, so will have to wait to 11th Jan for my bits.

Take a peek at that video in a bit when its done processing and lemme know if you see part "247" in my video.. i have no clue what the "spindle ring" is suppose to be..

[CADScott]

Just watching the video, not sure where that part comes from, will take mine apart tonight to have a look.

[Beezle]

That looks like the ring in the bottom of the quill. Does it not fit there?

[CADScott]

Nope, it's not the lower quill ring, it's too small. Can't find that part anywhere on mine, I guess they have sent you the wrong part diyengineer.

[Beezle]

Nope, it's not the lower quill ring, it's too small. Can't find that part anywhere on mine, I guess they have sent you the wrong part diyengineer.

Ah, and thanks for that video.

So you push down on the sleeve under the drawbar cap and pull that C washer and it all comes out? After pulling the quill moving gears, that is.

[diyengineer]

Nope, it's not the lower quill ring, it's too small. Can't find that part anywhere on mine, I guess they have sent you the wrong part diyengineer.

Must be the wrong part. Here is a comparison.

So the real question is what the heck is part number P07042474!? "spindle ring".

[diyengineer]

Ah, and thanks for that video.

So you push down on the sleeve under the drawbar cap and pull that C washer and it all comes out? After pulling the quill moving gears, that is.

Well after you pull the C washer and take the spring off, Use the manual Quill feed and just keep lowering it on down, make sure you have one hand holding the quill and it will drop right on out!

[CADScott]

I think part 247 is the lower ring, my parts breakdown is different, and clearly shows part 247 at the bottom of the spindle. All the other numbers line up with Grizzly numbers.

[diyengineer]

I think part 247 is the lower ring, my parts breakdown is different, and clearly shows part 247 at the bottom of the spindle. All the other numbers line up with Grizzly numbers.

I am a idiot haha. I guess if i were to follow the line Number 247 does fall right below the bearing..(flame2)

haha! Your schematic in my opinion is clearly laid out better! I guess i have to be smarter than the drawing!

So problem solved, they sent me some Miniature sized version of part 247. Ill have to call them and see whats up with that?!

[hoss2006]

Sounds like you got it all figured out.
One note, the bearings should just fit in the bores, no need to press them in,
just a little love tap with a rubber mallet.
The upper bearing should have a slip fit on the spindle so binding won't screw up the preload.
emery the spindle if needed.
Hoss

P.S., the Z mounts are sold out now.

[Beezle]

Well after you pull the C washer and take the spring off, Use the manual Quill feed and just keep lowering it on down, make sure you have one hand holding the quill and it will drop right on out!

What did you push that sleeve down with? Seems stiff enough to need a clamp, but I haven't really tried yet. Waiting for the parts, etc. to arrive.

[Beezle]

What did you push that sleeve down with? Seems stiff enough to need a clamp, but I haven't really tried yet. Waiting for the parts, etc. to arrive.

To answer my own question - it was easier than I thought.

I locked the quill and have the feed already removed. Just 3 screws and it pulls out.

I left the drawbar cap on to catch the sleeve and pushed the sleeve down with a block of wood at one edge, then pull the C clip out.

Then slowly undo the cap and there wasn't that much spring at the end that anything flew. Then undo the quill lock and the spindle drops out.

So I assume preload of the bearing is in the two threaded rings? The top one having two cap screws in it?

Now I just have to figure out gears to improve RPMs and maybe learn how to use a compound rest so I can make Hoss' pulleys.

[diyengineer]

Umm... I need to order a new lower bearing... Its in pieces.. Banged on it a bit too hard.. opps... =( Now i have half the bearing stuck on the spindle and half in the quill.. ****!!!

[Starleper1]

The top ring is the one to set the preload. The bottom is basically a dust cap. The top ring is split half way and when you tighten those two cap screws it locks the ring in place by spreading the ring slightly. This way you don't loose your preload.