STEPPERONLINE 271 Planetary Gearbox Nema 17 Stepper Motor 168A for DIY CNC Robot 3D Printer

This is popular geared Nema 17 stepper motor with a medium body and torque. It has an integrated planetary gearbox with a 26.85:1 gear ratio, the resolution reach 0.067deg step angle. It's a good solution in applications that need very low rotation speeds and/or lots of torque. Electrical Specification * Manufacturer Part Number: 17HS15-1684S-PG27 * Motor Type: Bipolar Stepper * Step Angle: 0.067deg * Holding Torque: 3Nm * Rated Current/phase: 1.68A * Phase Resistance: 1.65ohms * Recommended Voltage: 12-24V * Inductance : 3.2mH±20%(1KHz) Gearbox Specifications * Gearbox Type: Planetary * Gear Ratio : 26.85:1 * Efficiency: 81% * Backlash at No-load :1deg * Max.Permissible Torque: 3Nm(425oz-in) * Moment Permissible Torque: 5Nm(708oz-in) * Shaft Maximum Axial Load: 50N * Shaft Maximum Radial Load : 100N Physical Specifications * Frame Size: 42 x 42mm * Motor Length: 40mm * Gearbox Length: 35mm * Shaft Diameter: 8mm * Shaft Length: 20mm * D-cut Length: 15mm * Number of Leads: 4 * Lead Length: 500mm * Weight: 510g 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.