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Bipolar stepper motor wires are terminated with bare leads. |
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Bipolar stepper motor wiring diagram. |
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Overview
This hybrid bipolar stepping motor has a 1.8deg; step angle (200steps/revolution). Each phase draws 670mA at 4.5V, allowing for a holding torque of 950g-cm (13oz-in). 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 controlled by a pair of suitable H-bridges (one for each coil), but we recommend using a bipolar stepper motor driver or one of our Tic Stepper Motor Controllers. In particular, the Tics make control easy because they support six different interfaces (USB, TTL serial, I²C, RC, analog voltages, and quadrature encoder) and are configurable over USB with our free configuration utility.
Our 5mm universal mounting hub can be used to mount objects on the stepper motor#8217;s 5mm-diameter output shaft.
Specifications
- Size: 28mmsquare—45mm, not including the shaft (NEMA 11)
- Weight: 140g (5oz)
- Shaft diameter: 5mm #8220;D#8221;
- Steps per revolution: 200
- Current rating: 670mA per coil
- Voltage rating: 4.5V
- Resistance: 6.8Omega; per coil
- Holding torque: 950g-cm (13oz-in)
- Inductance: 4.9mH per coil
- Lead length: 30cm (12³)
- Output shaft supported by two ball bearings
More specifications are available in the datasheet (45k pdf).
Dimensions
The following diagram shows the stepper motor dimensions in mm. The dimension labeled #8220;Length#8221; is 45mm. The output shaft has a length of 20mm and a 5mm diameter with a section that is flattened by 0.5mm. This shaft works with our 5mm universal mounting hub.
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The inside of a bipolar stepper motor (SOYO NEMA 14-size). |
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Stepper Motor Applications
Stepper motors are generally used in a variety of applications where precise position control is desirable and the cost or complexity of a feedback control system is unwarranted. Here are a few applications where stepper motors are often found:
- Printers
- CNC machines
- 3D printer/prototyping machines (e.g. RepRap)
- Laser cutters
- Pick and place machines
- Linear actuators
- Hard drives
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Pololu#8217;s assortment of stepper motors. |
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Note: This stepper motor is SOYO part number SY28STH45-0674A.