Taper or Flange Design for Drive Shaft of High Speed Centrifuge

[SpinFast]

I'm spinning a 24 in dia., 2 in thick aluminum disc ("table") at a rate of 6000 rpm. The drive shaft design is still not finalized.

Do you think I should go with a tapered drive shaft:

http://files.engineering.com/getfil...0&file=Taper-Shaft_Assembly_cross-section.JPG

Or should I go with a flange drive shaft:

http://files.engineering.com/getfil...-Shaft_Assembly_cross-section-detail-view.jpg

I have a general idea of the advantages/disadvantages of both options, considering slippage and alignment of both table-to-drive-shaft interfaces. I'm still a rookie (I'm going on 19 months out of college!), so any help whatsoever is greatly appreciated.

Thanks!

Phil

 

[plasgears]

Mechanical shafts can benefit from double D section with taper pin retention.

 

[desertfox]

Hi SpinFast

Well with the single nut on the tapered shaft my question is what stops the nut from coming undone also does the disc only turn one way, if so then you can use the opposite hand thread to help prevent loosening.
I think you need to tell us a lot more about the application to get any further feedback

desertfox

 

[TVP]

Another option to consider is a polygon shaft interface. Google shaft-hub connection or similar and you will find some stuff like this:

http://www.drivelines.co.uk/DMS/dynamicdata/docs/20071016152928_2.pdf

http://www.generalpolygon.com/profiles.htm

http://inside.mines.edu/fs_home/jsteele/411/Lectures/L09ShaftsKeysSplinesVibs/L18ShaftDesign.pdf

This type of connection used the shaft geometry to transmit the torque, and allows the threaded connection to see considerably less vibration, cyclic stress, etc.