i have these steppers: https://www.automationtechnologiesin...l23h286-20-8b/

and these drivers: https://www.automationtechnologiesin...rivers/kl5056/

i wired them bipolar parallel and have 36v power supply.

they run as they should, but it is pretty easy to spin the motor shaft when the motor is powered but not moving. it should be hard to turn, right?

also, they don't get even a little warm. i set the driver at 2.7 amps, but later snuck it up to 4.3 amps, trying to gain some holding torque. still easy to turn the stopped shaft, and still not above room temp.

thanks for any help.
calvin.