This NEMA 14-size hybrid bipolar stepping motor has a 1.8° step angle (200 steps/revolution). Each phase draws 1 A at 2.7 V, allowing for a holding torque of 1.4 kg-cm (20 oz-in).
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| 5mm Pololu universal aluminum mounting hub on a stepper motor with a 5mm output shaft. |
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Overview
This hybrid bipolar stepping motor has a 1.8° step angle (200 steps/revolution). Each phase draws 1 A at 2.7 V, allowing for a holding torque of 1.4 g-cm (20 oz-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.
Our 5mm universal mounting hub can be used to mount objects on the stepper motor’s 5mm-diameter output shaft.
Specifications
- Size: 35 mm square × 36 mm, not including the shaft (NEMA 14)
- Weight: 180 g (6 oz)
- Shaft diameter: 5 mm
- Steps per revolution: 200
- Current rating: 1 A per coil
- Voltage rating: 2.7 V
- Resistance: 2.7 Ohm per coil
- Holding torque: 1.4 kg-cm (20 oz-in)
- Inductance: 4.3 mH per coil
- Lead length: 12 in
 | | Bipolar stepper motor wires are terminated with bare leads. |
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 | | Bipolar stepper motor wiring diagram. |
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Dimensions
The following diagram shows the stepper motor dimensions in mm. The dimension labeled “length” is 36 mm. The output shaft has a length of 21 mm and a diameter of 5 mm. Though not shown in the diagram, the output is a D-shaft with a section that is flattened by 0.5 mm.
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| The inside of a bipolar stepper motor. |
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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
- Laser cutters
- Pick and place machines
- Linear actuators
- Hard drives
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| Bipolar stepper motors; from left to right: 20×30, 28×32, 28×45, 35×26, 35×28, 35×36mm. |
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Note: This stepper motor is SOYO part number SY35ST36-1004A.
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