Replaced by the 3318_1 - 42STH38-1684A NEMA 17 Bipolar 26.85:1 Planetary Gearbox Stepper.
This NEMA-17 motor has an integrated Planetary gearbox with a 26 103/121 :1 ratio. At 1.6 Amps (maximum current), this gearbox stepper can produce a maximum torque of 77 kg-cm. The gearbox is only rated for 30 kg-cm of continuous torque, and 60 kg-cm for brief overloads. Loading this gearbox stepper beyond the torque rating of the gearbox will shorten its useful life.
When connected to a 1063 - PhidgetStepper Bipolar 1-Motor, the 3318 has a maximum speed of a little under 23 RPM. At the output of the gearbox, the step angle is a little under 0.07°. When using the step angle in calculations, you should derive the exact step angle by dividing 1.8° by the gearbox reduction ratio.
| Motor Properties | |
|---|---|
| Motor Type | Bipolar Stepper |
| Step Angle | 0.067° |
| Step Accuracy | 5 % |
| Holding Torque | 30 kg·cm |
| Rated Torque | 30 kg·cm |
| Rated Speed | 22 RPM |
| Electrical Properties | |
| Recommended Voltage | 12 V DC |
| Rated Current | 1.6 A |
| Coil Resistance | 1.7 Ω |
| Phase Inductance | 3.2 mH |
| Physical Properties | |
| Shaft Diameter | 8 mm |
| Mounting Plate Size | NEMA - 17 |
| Weight | 513 g |
| Number of Leads | 4 |
| Gearbox Properties | |
| Gearbox Type | Planetary |
| Gear Ratio | 26 103⁄121 : 1 |
| Maximum Strength of Gears | 30 kg·cm |
| Gearbox Efficiency | 80 % |
| Shaft Maximum Axial Load | 49.1 N |
| Shaft Maximum Radial Load | 98.1 N |
| Customs Information | |
| Canadian HS Export Code | 8501.10.00 |
| American HTS Import Code | 8501.10.40.60 |
| Country of Origin | CN (China) |
The 3318 stepper motor connects to the 1063 - PhidgetStepper Bipolar 1-Motor.
The following table shows how to connect the motor wires to the board connectors to produce a clockwise rotation in the stepper motor when increasing position. To wire for counter-clockwise rotation when increasing position, reverse the red and blue wires.
| Wire Color | Black | Green | Red | Blue |
|---|---|---|---|---|
| Board Connector | A | B | C | D |
Note: Make sure to unplug the power cord from the motor controller before switching wires around.
|
Connecting the motor directly to a power supply will destroy the motor and void the warranty. If you want to check your motor make sure it is connected to a constant current / chopper drive controller. |
