Hmm,they have a single 3 phase winding, but no hall sensors.
Can you count how many magnetic bumps per turn ? It says 1.2deg and oppose to 1.8 on a standard stepper. On a 1.8 deg stepper there are 50 bumps /turn.

What you first turn them on, do they do a dance back and forth ?

Definitely a weird motor not a stepper, but a hybrid of a stepper and brushless. The problem with a system like that is you prpbably won't be able to get replacement drive or motor separately in a year from now.


I've started to make a closed loop stepper (Cobra-sv) that uses any standard stepper and any encoder 500line or 1000 line encoder. Its very new, and i still have some switching noise when the motor is stopped, so i need to make a 4 layer board, but they work good. I'm using the KL23H2100-35-4B motor from keling and a 500 line US digital encoder. It doesn't add more performance to the stepper system, but just reliability.

Larry