Product Review

Electrical Specification:
* Manufacturer Part Number: 17HS4401S-PG518
* Motor Type: Bipolar Stepper
* Step Angle(W/O Gearbox) :1.8°±5%
* Holding Torque: 1.68Nm
* Rated Current/phase: 1.68A
* Phase Resistance: 1.65ohms
* Inductance 3.2mH±20%(1KHz)

Gearbox Specifications:

* Gearbox Type: Planetary
* Gear Ratio: 5.18:1
* Efficiency: 90%
* Backlash at No-load:1 deg.
* 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: 8mm
* Shaft Length: 20mm
* D-cut Length: 15mm
* Number of Leads: 4
* Lead Length: 1M
* Weight: 455g

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.