wonder if anyone can give me a hand.

I was hoping to use a drill motor but because of space that may not be possible. I am looking ideally for a motor thats 5cm in length with the same power and weight of a drill motor (just over 200g). The diameter does not matter. It will be used to spin a 2kg disc so something that is more torque than rpm would also be good.

I doubt there is anything out there but thats why I am asking you guys!