Oh, I misread it as you wanted to use the motor as a drill when you said you wanted a motor with a large shaft to drill a hole into...
Well...an RC hobby outrunner with a gearbox is probably your best bet. It may be a bit larger than you want though.
If you use a wheel on the shaft to wind something with, you need more torque (due to the lever effect). Torque is normally a specification of force-length (like Newton-cm/meters or pounds-inches/foot). For a given torque, as the length of the lever arm (or wheel radius) gets longer the applied force at the end (or edge) decreases. But larger wheels also move (or wind) more for a particular RPM since the edge travels farther in one rotation.
So your specifications of RPM and force required isn't really enough information. YOu need to know the linear speed of you want for winding and the weight of the object. From there you can figure out the wheel diameter, motor torque, and motor RPM that you need to achieve. And there is more than one combination of these 3 factors that will achieve the same linear speed and force. If you don't have enough torque, make the wheel smaller (which will slow down the winding speed but increase force), so you can compensate by making the motor spin faster. If you don't have enough speed you can make the wheel larger (but this reduces force, but you don't want to make the wheel so large that the motor does not have enough torque to produce the force at the edge of the wheel to actually spin as fast as you wanted it to). It's a fine balance...increasing speed decreases torque, but after a certain point the motor does not have enough torque to actually go that fast anymore and it actually starts slowing down again.
It is very difficult for motors to spin slowly and produce a lot of torque without a large (and expensive hard to find) gearbox. I suggest that instead, you reduce your wheel size a LOT (like almost bare shaft diameter if possible) to minimize the lever effect, allowing your motor to produce maximimum force on the edge of the shaft with it's torque. THe motor will be spinning fast without the gearbox, but the linear travel per rotation is small because the leverl length/winch diameter is small so the high rotational speed should help compensate for the smaller linear travel per rotation.
But good motor specs are hard to come by unless you're a giant company making a mass order from a company that specifically builds motors...so trial and error with the RC outrunners + gearbox (if you can find one to fit) is probably best.