Flat faced fan spindle - what tool?

[OIC]

Need to remove a fan blade held on with a nut fastened onto a flat faced spindle.

So D shaped in profile.

Rather than strip down the whole induction motor assembly, I'd prefer to clamp the spindle using a spanner or socket with a female D profile and then loosen the nut.

Such a tool must exist, but I can't find it because I don't know what it's called.

Anyone care to edumacate me?

Muchly.

[louiebaby]

How quick do you need it?

Could you get some of that putty that sets rock hard and fashion a tool out of that?

[OutInTheShed]

Impact driver?

Induction heater to loosen the nut?

Dremel the nut off?

Find some way of gripping/stopping the fan?

[Bill]

OutInTheShed said:

Find some way of gripping/stopping the fan?

This. Is the fan blade too fragile to use it to hold the spindle?

[normalbloke]

Surely any correctly sized spanner or adjustable will get a purchase on the single flat side of the spindle. Then use an impact driver to release the nut.

[OIC]

Blade is made of chocolate.

Don't want to flatten the thread on the spindle by using a spanner or grips.

Looks like I was right - it's a tool that doesn't exist.

I've already designed an adjustable D-plier with one flat hardened edge and 1 softer hard rubber edge.

Watch out for my Dragons' Den appearance shortly.

Magic.

[dhutch]

OutInTheShed said:

Impact driver?

Induction heater to loosen the nut?

Dremel the nut off?

Find some way of gripping/stopping the fan?

Sounds about right.

[normalbloke]

Pictures?

[GliderRider]

1. Find a nut that fits the shaft thread.
2. Saw through from one of the hexagon corners of the nut on the axis of the hole.
3. Screw the nut onto the shaft thread
4. Clamp the nut around the shaft thread with either mole grips or a vice, with the sawn slot aligned with the middle of the D flat.
5. Undo the fan clamping nut.

Note: If access is bad, use a flat bike spanner on the fan clamping nut; ideally a six point spanner threaded on first.

Edited by GliderRider on Friday 17th October 17:22

[thebraketester]

Parallel jaw pliers might work. Depends how big the flat is and how tight the bolt is. Do you have a picture?