Nema 23 Stepper Motor 269oz-in Bipolar 1_8deg 2_8A Stepping Motor for CNC 3D Printer DIY Milling Lathe Router

High Torque Stepper Motor Nema 23 Bipolar 2.8A 269oz-in 4-lead with 11.81" Cable for Extruder 3D Printer Milling CNC Machinery Electrical Specification: * Manufacturer Part Number: 23HE30-2804S * Motor Type: Bipolar Stepper * Step Angle: 1.8 deg. * Holding Torque: 269oz.in( 1.9Nm) * Rated Current/phase: 2.8A * Phase Resistance: 1.13ohms * Inductance: 5.4mH+/-20%(1KHz) Physical Specification: * Frame Size: 2.24 x 2.24 inches(57 x 57 mm) * Body Length: 2.99 inches(76 mm) * Shaft Diameter: ?0.25 inch(?6.35 mm) * Shaft Length: 0.81 inch(21 mm) * Number of Leads: 4 * Lead Length: 11.81 inches(300 mm) * Weight: 42.33oz(1.2 kg) Connection: Black(A+), Green(A-), Red(B+), Blue(B-) Warning: Connecting the motor directly to a power supply can destroy the motor. Make sure the motor connect to a constant current or chopper drive controller before test