NEMA 17 stepper motors are used in almost all the Reprap 3D Printers. This 40mm motor is ideal to drive the Z axis of a Raprap 3D printer as well as a extruder with a high gear ration like the Wade's Extruder. This is a high torque, bi-polar, 4-wire stepper motor and comes with pig tail leads.

Specifications:

• Size: NEMA 17 (42mm x 42mm)
• Length: 40mm
• Step angle: 1.8 Degrees
• Rated voltage: 3.84V
• Current/Phase: 1.2A
• Resistance/Phase: 3.2Ohm
• Inductance/Phase: 2.8mH
• Holding Torque: 3.6kg.cm (0.36Nm)
• Number of leads: 4
• Rotor inertia: 54g.cm^2
• Weight: 288g