On 1/22/2018 10:43 AM, Clare Snyder wrote:
....

How about pressing out the existing shaft and replacing with a new
one??

'membered model number off by a digit -- it's 7450 instead 7440.

Here's bestest schematic found...gives an idea how it's built; the rotor
19 and gears 16,18 are the weak links; 5 and 10 never show any
significant wear at all...

https://www.toolpartsdirect.com/blackdecker-7450-type-2-belt-sander-115v.html

--