This round size hybrid bipolar Nema 14 stepper motor with 0.9° step angle (400 steps/revolution). Each phase draws 500 mA at 8.5 V, allowing for a holding torque of 5Ncm(7.08oz.in). Electrical Specification * Manufacturer Part Number: 14HR05-0504S * Motor Type: Bipolar Stepper * Step Angle: 0.9° * Holding Torque: 5Ncm(7.08oz.in) * Rated Current/phase: 0.5A * Phase Resistance: 17ohms * Recommended Voltage: 12-24V * Inductance : 7.5mH±20%(1KHz) Physical Specification * Frame Size: Φ36mm * Body Length: 12.5mm * Shaft Diameter: Φ5mm * Shaft Length: 10.5mm * D-cut Length: 5mm * Number of Leads: 4 * Lead Length: 300mm * Weight : 50g 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.

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