LDO-42STH60-2004MAC is the highest torque 0.9° motor. It is 60mm high, weighs half a kilogram, so it might be worth using in a setup where it doesn't move.
- NEMA 17.
- 0.9° Step Angle.
- 400 Steps Per Revolution.
- 2.0 Amp
- 6.0 kg/cm Holding Torque.
- 60mm Body
- Weight: 500g
- 25mm Output Shaft (5mm diameter)