This compact bipolar stepper with a rear shaft and a planetary gearbox has a 0.067° step angle and 14 kg·cm of torque at low speeds.
When connected to a 1067 - PhidgetStepper Bipolar HC, the 3321 has a maximum speed of 120 RPM. At the output of the gearbox, the step angle approximately 0.067°. When using the step angle in calculations, you should derive the exact step angle by dividing 1.8° by the gearbox reduction ratio.
Motor Controller and Connection
The 3321 stepper motor connects to a bipolar motor controller such as the 1067 - PhidgetStepper Bipolar HC.
The following diagram 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.
Note: Make sure to unplug the power cord from the motor controller before switching wires around.
The rear shaft of this motor can be equipped with the HKT22 Optical Encoder for applications where you need to keep track of the exact position, velocity, or acceleration of the motor.
The mounting holes on this motor are compatible with the 3337 - Mounting Bracket (NEMA11).
|Motor Type||Bipolar Stepper|
|Manufacturer Part Number||28STH32-0674B / 28JXS40K27|
|Step Accuracy||± 5 %|
|Holding Torque||16.1 kg·cm|
|Rated Torque||14 kg·cm|
|Maximum Speed (w/1067 Motor Controller)||120 RPM|
|Acceleration at Max Speed
(w/1067 Motor Controller)
|1.8E+06 1/16 steps/sec²|
|Recommended Voltage||12 V DC|
|Rated Current||670 mA|
|Coil Resistance||5.6 Ω|
|Phase Inductance||3.4 mH|
|Shaft Diameter||6 mm|
|Rear Shaft Diameter||3.9 mm|
|Mounting Plate Size||NEMA - 11|
|Number of Leads||4|
|Wire Length||300 mm|
|Gear Ratio||26 103⁄121 : 1|
|Backlash Error||1 1⁄2°|
|Maximum Strength of Gears||20 kg·cm|
|Shaft Maximum Axial Load||25 N|
|Shaft Maximum Radial Load||35 N|
|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.|