Data Sheet

RB-Phi-266

12V, 2.8A, 3333 oz-in NEMA-23 Bipolar Stepper Motor

This NEMA-23 motor has an integrated Planetary gearbox with a 76 49/64 :1 ratio. It comes with the

rear shaft exposed, so you can mount an encoder or shaft coupler. When connected to a Bipolar HC, the

3334 has a maximum speed of 25 RPM. At the output of the gearbox, the step angle approximately

0.023°. When using the step angle in calculations, you should derive the exact step angle by dividing

1.8° by the gearbox reduction ratio.

At 2.8 Amps, this stepper motor can produce a maximum torque of 960 kg-cm. However, the gearbox

is only rated for 240 kg-cm of continuous torque. Loading this gearbox stepper beyond the torque

rating of the gearbox will shorten its useful life.

Motor Controller and Connection

The stepper motor connects to a bipolar motor controller. 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.

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RB-Phi-266 12V, 2.8A, 3333 oz-in NEMA-23 Bipolar Stepper Motor This NEMA-23 motor has an integrated Planetary gearbox with a 76 49/64 :1 ratio. It comes with the rear shaft exposed, so you can mount an encoder or shaft coupler. When connected to a Bipolar HC, the 3334 has a maximum speed of 25 RPM. At the output of the gearbox, the step angle approximately 0.023°. When using the step angle in calculations, you should derive the exact step angle by dividing 1.8° by the gearbox reduction ratio. At 2.
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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. Motor Properties • Motor Type: Bipolar Stepper • Step Angle: 0.