3330 - 57STH56 NEMA 23 Bipolar Precision Gearless Stepper
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This NEMA-23 motor generates 12 kg-cm of torque at 2.8 Amps. It comes with the rear shaft exposed, so you can mount an encoder or shaft coupler.
This motor is particularly suited for precision applications due to its 0.9° step angle.
When connected to a 1067 - PhidgetStepper Bipolar HC, the 3330 has a maximum speed of approximately 2250 RPM.
The 3330 stepper motor connects to a bipolar motor controller such as the 1067 - PhidgetStepper Bipolar HC.
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 | TO | B | C | D |
Note: Make sure to unplug the power cord from the motor controller before switching wires around.
Warning
| 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. |
Product Features
- High Precision, Good Speed
- 0.9° Step Angle
- Motor can produces 12 kg-cm holding torque @ 2.8A
- NEMA-23 Bipolar 4-wire
- Rear shaft exposed for compatibility with encoders
Motor Properties
| Motor Type | Bipolar Stepper |
| Manufacturer Part Number | 57STH56-2804MB |
| Step Angle | 0.9° |
| Step Accuracy | 5 % |
| Holding Torque | 12 kg cm |
| Rated Torque | 11.2 kg·cm |
| Maximum Speed (w/1063 Motor Controller) | 208 RPM |
| Maximum Speed (w/1067 Motor Controller) | 2250 RPM |
| Acceleration at Max Speed (w/1067 Motor Controller) |
800000 1/16 steps/sec² |
Electrical Properties
| Recommended Voltage | 12V DC |
| Rated Current | 2.8A |
| Coil Resistance | 900mΩ |
Physical Properties
| Shaft Diameter | 1⁄4 ″ |
| Rear Shaft Diameter | 3.9mm |
| Mounting Plate Size | NEMA - 23 |
| Weight | 695 g |
| Number of Leads | 4 |
| Wire Length | 300 mm |