Originally Posted by Kevin Sevcik
To be more precise, there are two ball bearings on the output shaft and one (I think, don't have one in front of me) on the input side holding the input coupling. So the output shaft can definitely support some cantilevered loads.
Do remember that you're not going to be able to stick a mini-cim into this gearbox. You'll have to go with a BAG motor and a 3:1 ratio, which will endup somewhat slower than your mini-cim. So you might be better off figuring out how to make up a shaft coupling and support system for the mini-cim.
EDIT:Actually, a BaneBots RS550 motor into a 3:1 gearbox gets you a similar free speed to the mini-CIM with a bit more power. You might try that combo as a drop-in replacement for your mini-CIM.
If you're clever, with a custom mount plate and a trimmed down shaft, you can mount a MiniCIM to a VersaPlanetary gearbox.