This is NEMA 17 bipolar with 1.8º (200 steps/revolution). Stepper motor is perfect for open loop motion control.

Features:

• Bipolar Nema 17 Stepper Motor with high torque
• Each phase current is 1.7A (at 12V) & phase reslstance 1.5ohms, and the holding moment is 40Ncm (56.2oz.in).
• NEMA 17 bipolar 4-wire, with 1.8° step angle (200 steps/revolution)
• Warning: It should be connected to a constant current or chopper driver as a stepper motor. If you connect the motor directly to a power supply, the motor is destroyed.
• Connection:Black(A+), Green(A-), Red(B+), Blue(B-).
• This is the most popular Nema 17 model. It with 1.8 deg. step angle (200 steps/revolution).

Electrical Specification:

• Manufacturer Part Number: 17HS4401
• Motor Type: Bipolar Stepper
• Step Angle: 1.8 deg.
• Holding Torque: 40Ncm(56.2oz.in)
• Rated Current/phase: 1.7A
• Phase Resistance: 1.5Ohm±10%
• Insulation Resistance: 100MΩ¸ Min, 500VDC
• Insulation Strength: 500VAC for one minute

Physical Specification:

• Frame Size: 42 x 42mm
• Body Length: 40mm
• Shaft Diameter: 5mm
• Number of Leads: 4
• Lead Length: 400mm
• Weight: 280g
• Temperature rise: 80deg Max(rated current, 2 phase on)