STEPPERONLINE Double Shaft Nema 17 Stepper Motor 1.68A 45Ncm Bipolar 4-wires 3D Pinter DIY CNC

This is the most popular Nema 17 stepper motor in 3D printer market, with 1.8° step angle (200 steps/revolution). Each phase draws 1.68A, allowing for a holding torque of 44Ncm(62.3oz.in). It's very good choice for 3D printer, a rear shaft is made for encoder or equals. Electrical Specification * Manufacturer Part Number: 17HS19-1684D * Motor Type: Bipolar Stepper * Step Angle: 1.8° * Holding Torque: 44Ncm(62.3oz.in) * Rated Current/phase: 1.68A * Phase Resistance: 1.65ohms * Recommended Voltage: 12-24V * Inductance : 2.8mH±20%(1KHz) Physical Specification * Frame Size: 42 x 42mm * Body Length: 48mm * Shaft Diameter: ?5mm * Front Shaft Length: 24mm * Rear Shaft Length: 13mm * Number of Leads: 4 * Lead Length: 500mm * 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.