Electric motor arbor question

[35k0]

I have an old electric motor and I want to put a 9'' sanding disc on the motor, however the motor has 1/2'' arbor/spindle and the disc has a 3/4 opening.
Is there an arbor that would have 3/4'' shaft that I can put on the motor? I’m not finding anything but I may not know the right terminology.
What can I do to make this work?
Thanks!

 

[Snip's]

McMaster-Carr has aluminum bronze sleeve bearings in various lengths, that could be used as a adapter with one of the arbor shafts you have pictured...



Or a $$$ step up shaft adapter....

 

[35k0]

McMaster-Carr has aluminum bronze sleeve bearings in various lengths, that could be used as a adapter with one of the arbor shafts you have pictured...



Or a $$$ step up shaft adapter....

Awesome, thank you.

 

[RTM]

If you have female threads on that sanding disk, his first option may not work for you. If it’s thru bolted, ignore me.

 

[Snip's]

If you have female threads on that sanding disk, his first option may not work for you. If it’s thru bolted, ignore me.

Appears to be a smooth bore with two set screws on the sanding disc...

 

[RTM]

That arbor bushing may not work then,unless you slot or bore it so the set screws hit the main shaft, else any friction may cause it to spin.

 

[Snip's]

Add two holes through the bushing in alignment with the two set screws. It's a $6.00 solution. The other option goes for around $65.00.