In order to ease customers' identification of 2-phase hybrid stepper motors, we hereby optimized the coding rules & updated the models (part number) of existing 2-phase motors.

Please visit web http://new.motionking.com/Products/Hybrid_Stepper_Motors/Part_Number_Construction/HB_Stepper_Motors_Part_Numbers.htm

The new code rules will help users to understand the motor's main specifications under the part number directly.