Stepper Motor: Bipolar, 200 Steps/Rev, 28×32mm, 3.8V, 0.67 A/Phase

SKU: POLOLU-1205 Brand: Pololu

This NEMA 11-size hybrid bipolar stepping motor has a 1.8° step angle (200 steps/revolution). Each phase draws 670 mA at 3.5 V, allowing for a holding torque of 600 g-cm (8.3 oz-in).

$45.15 AUD, inc GST

$41.05 AUD, exc GST

In stock, ships same business day if ordered before 2PM
Delivered by Mon, 25th of Nov

Quantity Discounts:

10-25 $39.82 (exc GST)
25+ $38.99 (exc GST)

Bipolar stepper motor wires are terminated with bare leads.

Bipolar stepper motor wiring diagram.

This hybrid bipolar stepping motor has a 1.8° step angle (200 steps/revolution). Each phase draws 670 mA at 3.8 V, allowing for a holding torque of 600 g-cm (8.3 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 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 5 mm universal mounting hub can be used to mount objects on the stepper motor’s 5 mm-diameter output shaft.

Specifications

Size: 28 mm square × 32 mm, not including the shaft (NEMA 11)
Weight: 110 g (4 oz)
Shaft diameter: 5 mm “D”
Steps per revolution: 200
Current rating: 670 mA per coil
Voltage rating: 3.8 V
Resistance: 5.6 O per coil
Holding torque: 600 g-cm (8.3 oz-in)
Inductance: 4.2 mH per coil
Lead length: 30 cm (12")
Output shaft supported by two ball bearings

More specifications are available in the datasheet (44k pdf).

Dimensions

The following diagram shows the stepper motor dimensions in mm. The dimension labeled “Length” is 32 mm. The output D-shaft has a length of 20 mm and a 5 mm diameter with a section that is flattened by 0.5 mm. This shaft works with Pololu's 5 mm universal mounting hub.

The inside of a bipolar stepper motor (SOYO NEMA 14-size).

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

Pololu’s assortment of stepper motors.

Note: This stepper motor is SOYO part number SY28STH32-0674A.

People often buy this product together with:

A4988 Stepper Motor Driver Carrier

Pololu Universal Aluminum Mounting Hub for 5mm Shaft, #4-40 Holes (2-Pack)

Stepper Motor: Bipolar, 200 Steps/Rev, 20×30mm, 3.9V, 0.6 A/Phase

Dimensions

Size:	28 mm square × 32 mm¹
NEMA size:	11
Weight:	110 g
Shaft diameter:	5 mm

General specifications

Shaft type:	5 mm "D"
Current rating:	670 mA²
Voltage rating:	3.8 V
Holding torque:	8.3 oz·in
Steps per revolution:	200
Resistance:	5.6 Ohm²
Inductance per phase:	4.2 mH
Number of leads:	4
Lead length:	30 cm

Notes:

1: Not including the shaft.
2: Per coil.

File downloads

SY28STH32-0674A stepper motor datasheet (44k pdf)
3D model of the SY28STH32-0674A stepper motor (Pololu item #1205) (3MB step)

Product Comments

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