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This Nema17 Stepper is what you need for your Reprap, Makerbot and other 3D Printers or CNC or Laser or Plasma cutter kits.

200 steps per revolution (1.8 deg/step)

2 Phase bipolar 4 wires

Rated Voltage 2V DC (It's not working voltage of this stepper. There is No problem to use 12V, 24V or even higher to 36V to drive this motor.)

Rated Current 1.5A

Phase Resistance: 1.7 Ohm ± 10% (20º C)

Phase inductance: 4.5 mH ± 20% (1kHz 1 V rms)

Holding torque: 0.65 N.m Min.

Shaft diameter: 5mm / 0.188" (3/16")

Shaft length: 22mm

Motor depth: 60mm

We usually have these NEMA17 stepper motors in stock. A flat 22mm long Shaft is compatiable with our GT2 pulleys. For orders over 50 or 100 motors please write us for the lead time and price. This NEMA17 40mm Stepper Motor can do all the jobs for your Reprap, Prusa Mendel or any 3d printers. Suitable for X,Y and Z axis. Can work in pairs and has enough torque to run any extruder design with any common filament size. We offer this motor with a customized 5mm flat shaft and 700mm long lead wires w/ connectors already attached. These will just plug right into your RAMPs 1.4 board.