This is popular geared Nema 17 stepper motor with a medium body and torque. It has an integrated planetary gearbox with a 5.18:1 gear ratio, the resolution reach 0.35°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-PG5
* Motor Type: Bipolar Stepper
* Step Angle: 0.35°
* Holding Torque: 1.68Nm
* 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 : 5.18:1
* Efficiency: 90%
* Backlash at No-load : <=1°
* Max.Permissible Torque: 2Nm(283oz-in)
* Moment Permissible Torque: 4Nm(566oz-in)
* Shaft Maximum Axial Load: 50N
* Shaft Maximum Radial Load : 100N

Physical Specifications
* Frame Size: 42 x 42mm
* Motor Length: 40mm
* Gearbox Length: 27.3mm
* Shaft Diameter: Φ8mm
* Shaft Length: 20mm
* D-cut Length: 15mm
* Number of Leads: 4
* Lead Length: 500mm
* Weight : 460g

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.