Gluing pulleys to shaft?

Bearings/Motors/Belts/Gears/Etc.

Gluing pulleys to shaft?

Postby gavztheouch » Mon Dec 24, 2012 3:39 pm

Im thinking of using some loctite 641 to glue my x-axis drive pulley to my stepper motor. The reason being is the set screw works itself loose after a while and results in some obvious backlash.

My current setup is one set screw located above a flat spot in the shaft. I need to add some threadlock to the set screw to stop it working loose this may cure the problem but I though I would look at the other options in the hope of finding a more robust solution.

After searching the net I have a few options.

1. Add an extra set screw at 90 degrees to the first.
2. Drill through the pulley and motor shaft and insert a small roll pin.
3. Permantly glue the pulley to the shaft using loctite 641 locktites strongest retaining compound
3. Search for a split hub pulley in the size required, no luck so far and they are pricey.
4. Use a less agressive loctite plus some of the mechnical method of retaining the pulley.

Have I missed any better options out?
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Re: Gluing pulleys to shaft?

Postby lasersafe1 » Tue Jan 01, 2013 5:32 pm

Glue sounds fine. Of course if you ever need to remove your motor, you may end up grinding off the pulley to free it. Motors don't fail too often though.
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