Hex Shaft Collar
 

Hey,
What kind of collar do I use for a hex shaft?

Re: Hex Shaft Collar
 

Calculate the distance from opposite angles by diameter/ sqrt(3) * 2. Find the nearest size up (ie 7/16" collar for 3/8" hex or 5/8" collar for 1/2" hex).

Alternatively, take out the set screw and broach the shaft collar :D

Re: Hex Shaft Collar
 

Re: Hex Shaft Collar
 

We broached 3/8" shaft collars for 3/8th hex shaft ad it worked great!

Re: Hex Shaft Collar
 

If you don't have enough collars of the right size (We never thought to check for ALUMINIUM collars, steel would have been overkill for our application) you can also take some aluminium rod stock, drill+broach the hex into it, and then file a flat to drill and tap! Worked great for us and get us the lightweight piece we needed. :)

Re: Hex Shaft Collar
 

We use shaft collars from McMaster. They are definitely overkill but work great.

Re: Hex Shaft Collar
 

If you have a lathe and know where you want to put things, an E-clip is also an option in some cases. (This is the route we chose on our ball rollers.)