In your question you asked for a motor with a high stall torque.
This property should be given by the manufacturer, i.e. it is a
specification. However, diameter, the motor constant are
generally proportional to torque capabilities in the same motor
family. In addition, you get more torque with additional
current. In general however, when specifying a motor you want to
know its operating point, i.e. its speed and torque. You
generally get this from the motor's characteristic torque-speed
curve. Torque and speed are linearly related in an electric
motor. Generally this curve is defined by the stall torque and
the "no load speed". The "stall torque" is the torque at zero
speed. The "no load speed" is the speed with zero torque
resisting the motor's rotation. These should be given in the
motor specification and they define the torque-speed curve: The
operating point is somewhere on the torque-speed curve. There
are many ways to obtain the operating point. However, since
you've given me the electrical power, it c