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Bipolar Stepper Motor with Planet Gear Box ( (FIT0349)

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This bipolar stepper motor with planet gear box (gear ratio: 5.18) uses a standard 8mm-diameter D type output shaft, and has a 1.8° step angle (200 steps/revolution). Each phase draws 1.6 A at 2.78 V, allowing for a holding torque of 18kg-cm (176N-cm). The motor has a body dimension of 42mm square and 40mm in length, while the planet gear box is 36mm in diameter and 27mm in length. The motor has four color-coded wires terminated with bare leads: black and green connect to one coil; red and blue connect to the other. It can be easily mounted with 4 M3 threaded holes and can be controlled with the Dual Bipolar Stepper Motor Shield for Arduino (A4988).

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I am looking for a stepper motor with smaller steps than the usual 200 step/1.8 degrees (or even 400/0.9).

With the gearbox on this unit, does that mean this part takes 1036 steps (5.18 x 200) for the output shaft to make one revolution?

Hey Thirteen,

That should be correct, although if you’d like we should be able to set up a little test here in the warehouse to make sure. However, that may not be necessary for your application, what you may be able to do is use micro-stepping to reduce the holding torque on a “Normal” stepper and get smaller steps for your project, although they’ll become less accurate in position as you’re essentially taking advantage of the fact that a stepper motor isn’t rigidly required to be in any given position and can move freely between them.

Microstepping in Stepper Motors Tutorial | Motion Control Blog.

If there’s anything else that you’d like to know please ask. Have a great day!

Many thanks, Bryce. :slight_smile:

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