STEPPERONLINE Nema 17 Geared Stepper Motor Gear Ratio 5:1 3D Printer Extruder Motor DIY CNC Robotics: Maxedbuy.com

This high precision NEMA 17 Stepper motor has an integrated Planetary gearbox with a 5.18:1 gear ratio, the resolution reach 0.35 deg. step angle. <br>It's a good solution in applications that need very low rotation speeds and/or lots of torque. <br> <br> <b>Electrical Specification:</b> <br> <br> * Manufacturer Part Number: 17HS19-1684S-PG5 <br>* Motor Type: Bipolar Stepper <br>* Step Angle: 0.35 deg. <br>* Holding Torque: 2Nm <br>* Rated Current/phase: 1.68A <br>* Phase Resistance: 1.65ohms <br>* Inductance: 2.8mH+/-20%(1KHz) <br> <br> <b>Gearbox Specifications:</b> <br> * Gearbox Type: Planetary <br>* Gear Ratio: 5.18:1 <br>* Efficiency: 90% <br>* Backlash at No-load:&lt;=3 deg. <br>* Max.Permissible Torque: 2Nm(283oz-in) <br>* Moment Permissible Torque: 4Nm(566oz-in) <br>* Shaft Maximum Axial Load: 50N <br>* Shaft Maximum Radial Load: 100N <br> <br> <b>Physical Specifications:</b> <br>* Frame Size: 42 x 42mm <br>* Motor Length: 48mm <br>* Gearbox Length: 27.3mm <br>* Shaft Diameter: 8mm <br>* Shaft Length: 20mm <br>* D-cut Length: 15mm <br>* Number of Leads: 4 <br>* Lead Length: 500mm <br>* Weight: 520g <br> <br> <b>Connection:</b> <br> <br> Black(A+), Green(A-), Red(B+), Blue(B-) <br> <br> <b>Warning:</b> <br> <br> Make sure the motor connect to a constant current or chopper drive controller before you test motor. <br>Connecting the motor directly to a power supply will destroy the motor.