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Gluing pulleys to shaft?

PostPosted: Mon Dec 24, 2012 3:39 pm
by gavztheouch
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?

Re: Gluing pulleys to shaft?

PostPosted: Tue Jan 01, 2013 5:32 pm
by lasersafe1
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.