Coupling the drill motor with out the 15 tooth gear

[Chopper_Dave]

I would like to couple directly to the drill motor shaft without using the bosch planetary reduction and also without using an additional gear stage outside of our transmission. Has anyone removed the 15 tooth pinion gear from the drill motor and attached a hex coupling or some other type of coupling onto the drill motor? How did you do this and what type of coupling did you use

Thanks for the help!