STEPPERONLINE 5:1 Planetary Gearbox Nema 17 Stepper Motor 0.4A for DIY CNC Robot 3D Printer
This is a short geared NEMA 17 Stepper motor, total length inlcuding shaft
below 80mm, and with 6mm diameter shaft. It has an integrated planetary
gearbox with a 5.18:1 gear ratio, the resolution reach 0.35 deg. 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:
17HS13-0404S-PG5  Motor Type: Bipolar Stepper  Step Angle: 0.35 deg.
Holding Torque without Gearbox: 25Ncm(31.2oz.in)  Rated Current/phase: 0.4A
 Phase Resistance: 27ohms  Inductance: 28.5mH+/-20%(1KHz) Gearbox
Specifications:  Gearbox Type: Planetary  Gear Ratio: 5.18:1  Efficiency:
90%  Backlash at No-load: <=3 deg.  Max.Permissible Torque: 3Nm(424.83oz.in)
 Moment Permissible Torque: 5Nm(708.06oz.in)  Shaft Maximum Axial Load: 50N
 Shaft Maximum Radial Load: 100N Physical Specifications:  Frame Size: 42 x
42mm  Motor Length: 34mm  Gearbox Length: 27.3mm  Shaft Diameter: 6mm 
Shaft Length: 18mm  D-cut Length: 12mm  Number of Leads: 4  Lead Length:
500mm  Weight: 380g 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.
 
Product Features
  

         
Good Torque Good Speed
         
0.35 deg. Step Angle
         
NEMA 17 bipolar 4-wire
         
Planetary Gearbox Ratio 5.18:1
         
Rated current 0.4A & resistance 27ohms