Worm gear NEMA11 stepper motor NEMA11 stepper motors Two phase bipolar 1.8 degree Worm gear ratio 20, 60 or 80 available in stock 28H31 1.77 Ohm and 0.94mH, 0.38Kg.cm holding torque 28H51 3.1 Ohms, 1.9mH inductance and 1.0Kg.cm holding torque Note: Mounting plate and the hand wheel are Not included ...