Thread: keyways

That wouldn't be easy, as the bulky shaft assembly probably would need to be taken out of the motor housing, then held somehow so you can make the keyway using a slotting action, or milling.
You might do some simpler method of securing the pulley, like cross-drilling the pulley and shaft, reaming them and fitting a roll pin. Or, fit a taper-lock bush but these are expensive.

Jordan

The long set screws that can fit a pulley and a flat filed on the shaft will most likely do ok.
On the cheap without a machine shop.
You can use a dremel or die grinder with a cut off fiber disc. A couple of thin homemade washers on the sides of the disc will control the depth. Finish with a very thin file if needed.

Any of the above methods would probably work fine.
Does the motor shaft allready have a Keyway in it?
Can you use the existing shaft keyway and fit a new or used pulley of the required size to the shaft?
Can you alter the size of the pulley bore to suit the shaft size of the motor if a keyway is present?

You could also just drill a hole in the boss of the pulley and tap it as said above. Then put the pulley onto the shaft and run a small drill bit down the hole to mark the shaft, remove it and spot drill a small hole for the bolt or grub screw to sit in.

Dave

Thanks everyone, sounds like tap and die time. I've been looking for an excuse to break them out. Let the restoration begin...

Originally Posted by Dave J

You could also just drill a hole in the boss of the pulley and tap it as said above. Then put the pulley onto the shaft and run a small drill bit down the hole to mark the shaft, remove it and spot drill a small hole for the bolt or grub screw to sit in.

Dave

Thats what I did for my Mill Head Lift Motor, except I used three grub screws. 120° apart, for maximum security. Hasn't slipped yet....

Sterob

Hi Graeme,
Disregard this if you have experience tapping.
If your using a cheaper carbon tap set just be careful they don't jam or snap. They are really meant for cleaning up threads, but can be used to cut as long as your careful.
You can help the carbon taps out by drilling the hole slightly over size and only having 75% thread depth instead of the full 100% and using oil of cutting fluid if you have it.

Good luck with you restoration, and if it's the saw I am thinking of they are a good table saw that will last for years.

Dave

If you know some one with a mill it would b a fairly simple job just remove the armature, mount it between centres on the mill and cut the keyway with a endmill cutter, some rewind shops can do this also

ill give it a crack for you mate

Hi All,

What about a scotch key?

Regards
Ray

You could just get a new taperlock pulley as these can be fitted without the need for a key in a lot of circumstances.

http://www.p-i-v.com/pdf/installation_instructions.pdf

Originally Posted by China

If you know some one with a mill it would b a fairly simple job just remove the armature, mount it between centres on the mill and cut the keyway with a endmill cutter, some rewind shops can do this also

Not sure I understand why you would need to remove the armature. Couldn't you just hold the shaft in the vise?

Fitting a grubby sounds easiest to me. Drop of Loctite. You could still fall back on a keyway if needed. Taperlocks are a bit pricey aren't they?

what size is the shaft and how far does it stick out from the motor. how much are taperlocks? i was thinking about throwing some out.

Originally Posted by azzrock

what size is the shaft and how far does it stick out from the motor. how much are taperlocks? i was thinking about throwing some out.

You can throw 'em my way if Graeme doesn't need 'em.