• Motors include cables, see individual data sheet for details. Custom cable lengths available here.
• 42STH40-1684AC and 42STH38-1684AC are the same thing, different names for the same motor.
• Winding temperatures are generally about 50C more than ambient, so a 130C winding temperature means a maximum chamber temperature of 80C.

LDO-36STH20-1004AHIG(6T)

Stepper Motor Terminology:

Step Angle: How much of a 360deg circle each full step completes. 1.8 deg/step motors take 200 full steps to complete a revolution. .9 deg/step motors take 400 complete steps. Motors with smaller deg/step values allow for more precise motion.

Voltage: the reference voltage required to make maximum current with the indicated resistance. With chopping stepper drivers used in nearly all 3d printers, this isn’t relevant.   

Current: Maximum recommended continuous (RMS) current per coil

Resistance: Rated resistance per coil

Inductance: Rated resistance to change in current – a higher inductance means the stepper driver will need to work harder to change direction/speed. Lower the inductance, the faster the motor can react (faster acceleration/jerk) as well as reduce EMF to allow for greater maximum speeds.

Holding Torque: Maximum torque motor can exert while powered. Higher is better.

Detent Torque: Torque when the motor is not energized.

# of leads: Quantity of wires you need to connect to run the motor.

Weight: lower is better if motors are on moving axis.

Winding Temp: Maximum temperature motor windings can sustain before damage.