| 3307_0 - NEMA-23 Bipolar 76mm Stepper |
Product Features
- Very High Torque
- 1.8° Step Angle
- 12.5 kg-cm holding torque @ 2.2A
- 11.06 kg-cm low speed torque
- NEMA-23 Bipolar 4-wire
At 12.5 Kg-cm of holding torque, this is our strongest stepper motor without a gearbox.
The 3307 stepper motor connects to a bipolar motor controller:
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. |
Motor Properties
| Motor Type | Bipolar Stepper |
| Manufacturer Part Number | 57BYG621 |
| Step Angle | 1.8° |
| Step Accuracy | 5 % |
| Holding Torque | 12.5 kg·cm |
| Rated Torque | 11.1 kg·cm |
| Maximum Speed (w/1063 Motor Controller) | 600 RPM |
| Maximum Speed (w/1067 Motor Controller) | 4688 RPM |
| Acceleration at Max Speed (w/1067 Motor Controller) | 180000 1/16 steps/sec² |
Electrical Properties
| Recommended Voltage | 24 V DC |
| Rated Current | 2.2 A |
| Coil Resistance | 1.8 Ω |
Physical Properties
| Shaft Diameter | 1⁄4″ |
| Mounting Plate Size | NEMA - 23 |
| Weight | 916 g |
| Number of Leads | 4 |
| Wire Length | 300 mm |






