Shaft Collar Question

chawalang

Well-Known Member
What is this kind of shaft collar and sprocket called? I have tried to search for similar ones on Grainger and McMaster with no success. This looks like the most ideal for mounting on the shaft, once the set screws are screwed in between the sprocket and collar it would create a tight hold on the shaft.
 

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I've used "Mounting shaft collars" or Mounting collars before but I've not seen one like this before.
 
I don't understand. This is for when you need to put a sprocket on a non keyed drive shaft? When is a drive shaft not keyed?
 
Looks like a detachable bushing to me.

I started with clam plate shaft as my search.

Grainger item#5UJA5
 
This is a taper-lock sprocket. The part that touches the shaft is a taper-lock bushing. Tightening the set screws pulls the bushing into the tapered sprocket or hub causing it to grab the shaft and shaft key. There’s a third tapped hole on the bushing for removal. You can buy just the hub portion which is a very common way to attach hoist drums to the shaft.
 

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