This is high torque Nema 17 stepper motor with 1.8 deg. step angle (200 steps/revolution). Each phase draws 2A, allowing for a holding torque of 59Ncm(83.6oz.in). It's very good choice for 3D printer.

Electrical Specification:

• Manufacturer Part Number: 17HS19-2004S
• Motor Type: Bipolar Stepper
• Step Angle: 1.8 deg.
• Holding Torque: 59Ncm(83.6oz.in)
• Rated Current/phase: 2.0A
• Phase Resistance: 1.4ohms
• Inductance: 3.0mH+/-20%(1KHz)

Physical Specification:

• Frame Size: 42 x 42mm
• Body Length: 47mm
• Shaft Diameter: 5mm
• Shaft Length: 19.5mm
• D-cut Length: 19.5mm
• Number of Leads: 4
• Lead Length: 225mm
• Weight: 390g

Connection:

Black(A+), Green(A-), Red(B+), Blue(B-)

Warning:

Make sure the motor connect to a constant current or chopper drive controller before you test motor. Connecting the motor directly to a power supply will destroy the motor.