Available with a lead time
Expect dispatch between Dec 11 and Dec 16
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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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This small hybrid bipolar stepping motor has a 1.8° step angle (200 steps/revolution). Each phase draws 600 mA at 3.9 V, allowing for a holding torque of 180 g-cm (2.5 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. These leads connect to the stepper motor through a removable JST-ZHR-5 connector. The motor can be controlled by a pair of suitable H-bridges (one for each coil), but Pololu recommend using a bipolar stepper motor driver or one of Pololu's 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 Pololu's free configuration utility.
Pololu's 4 mm universal mounting hub can be used to mount objects on the stepper motor’s 4 mm-diameter output shaft. For a slightly more powerful motor in the same NEMA size but a longer length, consider Stepper Motor: Bipolar, 200 Steps/Rev, 20×42mm, 4.3V, 0.8 A/Phase. A comparison between these two motors can be seen in the image below.
SY20STH30-0604A (top) and SY20STH42-0804A (bottom). |
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Specifications
More specifications are available in the datasheet (51k pdf).
Dimensions
The following diagram shows the stepper motor dimensions in mm. The dimension labeled “Length” is 30 mm. The output D-shaft has a length of 15 mm and a 4 mm diameter with a section that is flattened by 0.5 mm. This shaft works with Pololu's 4 mm universal mounting hub.
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:
Pololu’s assortment of stepper motors. |
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Note: This stepper motor is SOYO part number SY20STH30-0604A.
People often buy this product together with:
Pololu Universal Aluminum Mounting Hub for 4mm Shaft, #4-40 Holes (2-Pack) |
A4988 Stepper Motor Driver Carrier |
Stepper Motor: Bipolar, 200 Steps/Rev, 28×32mm, 3.8V, 0.67 A/Phase |
Dimensions
Size: | 20 mm square × 30 mm1 |
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NEMA size: | 8 |
Weight: | 60 g |
Shaft diameter: | 4 mm |
General specifications
Shaft type: | 4 mm "D" |
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Current rating: | 600 mA2 |
Voltage rating: | 3.9 V |
Holding torque: | 2.5 oz·in |
Steps per revolution: | 200 |
Resistance: | 6.5 Ohm2 |
Inductance per phase: | 1.7 mH |
Number of leads: | 4 |
Lead length: | 30 cm |
Notes:
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