Shars U2 Universal Tool and Cutter Grinder-Adapter removal?

[Janderso]

Hey all,
My plan is to have a few grinding wheels (diamond and aluminum oxide) pre mounted on their own adapters.
I just got this unit, I don’t want to screw anything up.
The adapter is on a taper, it appears you can push it off by just threading a bolt into the spindle.
I would appreciate confirmation on this.
The pics show the adapter on the taper and the wheel hold down screw. I tried to drive it off with this Allen head stud but the Allen tool was bending.
Thank you for the advice,
Jeff

 

[Stonebriar]

Watching with interest. I bought 3 spare adapters for mine.

 

[Janderso]

Well, don’t I feel silly.
The adapter thread is 8mm X 1.25.
I screwed a matching bolt into the mounted adapter and with a bit of pressure the adapter popped off the taper.
I guess it would be best to find a longer threaded rod and reduce the part in front so it can push off the inside of the taper on the spindle rather than the end. There are no marks on the spindle end but I don’t like the idea.

What have the rest of you done?

 

[pontiac428]

You need to reduce the diameter of the last 1/2" of your bolt so it actually pushes the spindle, or else you'll just booger things up. The breaking torque of the taper is pretty modest, so if you are forcing it it's because the tip of the bolt isn't engaging the spindle and just catching the hub instead.

I posted this before, it's my tool that has the tip profile needed (no, that's not what she said):

 

[NC Rick]

I have done that on my Sheckle. I just moved mine to a more accessible spot in the shop. I think ill use it more this way. Better dust collection is a must.

 

[Janderso]

You need to reduce the diameter of the last 1/2" of your bolt so it actually pushes the spindle, or else you'll just booger things up. The breaking torque of the taper is pretty modest, so if you are forcing it it's because the tip of the bolt isn't engaging the spindle and just catching the hub instead.

I posted this before, it's my tool that has the tip profile needed (no, that's not what she said):

View attachment 344989

That's the idea!
I don't know anything else about the rest of the story.

 

[Janderso]

I have done that on my Sheckle. I just moved mine to a more accessible spot in the shop. I think ill use it more this way. Better dust collection is a must.

I've been noticing that (about the dust). I was successful this morning in truing the pink wheel and grinding a broken tap into a useable bottom tap.
Shoot, it's already paying me back

 

[NC Rick]

I'm lazy, I'll make a better one one day... m8 screw drilled on the end with a 3/16" dowel pin shoved in it. About 33mm protrusion.

 

[NC Rick]

Hey all,
My plan is to have a few grinding wheels (diamond and aluminum oxide) pre mounted on their own adapters.
I just got this unit, I don’t want to screw anything up.
The adapter is on a taper, it appears you can push it off by just threading a bolt into the spindle.
I would appreciate confirmation on this.
The pics show the adapter on the taper and the wheel hold down screw. I tried to drive it off with this Allen head stud but the Allen tool was bending.
Thank you for the advice,
Jeff

Jeff,
I little tip on extracting these (I hope I'm not repeating someone else's post...): put a reasonable amount of torque on the extractor and then give the end of the bolt a little rap from a hammer. It will pop right off.

 

[Janderso]

Yeah, I’ve changed back and forth a few times today with the 8x1.25 bolt, it pops right off.
I’ll get the tool made this week.