What is the minimum shaft distance required to do a shaft coupling.
I want to mount encoders on my motors but the shaft length is only 15 mm long. My encoders are 12 mm wide. So, I only have 3 mm to do a shaft coupling.
The motors are this
The shaft have a diameter of 6 mm and the motors have a stall torque of 416 oz-in (30 kgf-cm). I am planning to do a 6mm to 6mm shaft coupling and I was wondering if 3 mm is enough distance. I want to mount the encoders like in the picture. From a graph in the motor website I think the power is around 15 Watts.