Shaft Extension for Wheelchair Motors

[Trumpkin]

I need to make the shaft on a couple of wheelchair motors longer, they have key seats on the shafts so I'm thinking of getting a couple of woodruff keys and using these: http://www.thebigbearingstore.com/servlet/the-1526/1-fdsh-2%22-Keyed-Shaft-Coupler/Detail along with some key stock, to attach this http://www.robotmarketplace.com/products/shafts_keyed_main.html and then use these: http://www.thebigbearingstore.com/servlet/the-5/1-fdsh-2%22-Pillow-Block-Bearing/Detail to reinforce the keyed shaft. There will be ~60 lbs on the shafts, so do you think this will work?

[ArcMan]

I'm not sure what you mean by "reinforce" the keyed shaft.  If you use 2 bearings on the keyed shaft which completely support the load, you'll be fine.  Just be sure you don't transmit any radial force to the shaft coupling. It cannont take it.

[Trumpkin]

By "reinforce" I did mean "support the load". Thanks for the help.