Stepper Motor: Unipolar/Bipolar, 200 Steps/Rev, 57×76mm, 8.6V, 1 A/Phase

Stepper Motor: Unipolar/Bipolar, 200 Steps/Rev, 57×76mm, 8.6V, 1 A/Phase
Pololu item #: 1477 82 in stock

Price break Unit price (US$)
1 49.95
10 44.96


backorders allowed

This NEMA 23-size hybrid stepping motor can be used as a unipolar or bipolar stepper motor and has a 1.8° step angle (200 steps/revolution). Each phase draws 1 A at 8.6 V, allowing for a holding torque of 14 kg-cm (190 oz-in).

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6-lead, unipolar/bipolar stepper motor wires are terminated with bare leads.
6-lead, unipolar/bipolar stepper motor wiring diagram.

Overview

This high-torque hybrid stepping motor has a 1.8° step angle (200 steps/revolution). Each phase draws 1 A at 8.6 V, allowing for a holding torque of 14 kg-cm (190 oz-in). The motor has six color-coded wires terminated with bare leads that allow it to be controlled by both unipolar and bipolar stepper motor drivers. When used with a unipolar stepper motor driver, all six leads are used. When used with a bipolar stepper motor driver, the center-tap yellow and white wires can be left disconnected (the red-blue pair gives access to one coil and the black-green pair gives access to the other coil). We recommend using it as a bipolar stepper motor.

Our 1/4″ universal mounting hub can be used to mount objects on the stepper motor’s 1/4″-diameter output shaft.

Specifications

  • Size: 56.4 mm square × 76 mm, not including the shaft (NEMA 23)
  • Weight: 1 kg (35 oz)
  • Shaft diameter: 6.35 mm (0.25″) “D”
  • Steps per revolution: 200
  • Current rating: 1 A per coil
  • Voltage rating: 8.6 V
  • Resistance: 8.6 Ω per coil
  • Holding torque: 14 kg-cm (190 oz-in)
  • Inductance: 14 mH per coil
  • Lead length: 30 cm (12″)

More specifications are available in the datasheet (28k pdf).

Dimensions

The following diagram shows the stepper motor dimensions in mm. The output D-shaft has a 0.25″ (6.35 mm) diameter with a section that is flattened by 0.5 mm. This shaft works with our 1/4″ universal mounting hub.

The inside of a bipolar stepper motor.

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 SY57STH76-1006A.

People often buy this product together with:

DRV8825 Stepper Motor Driver Carrier, High Current DRV8825 Stepper Motor Driver Carrier, High Current
DRV8834 Low-Voltage Stepper Motor Driver Carrier DRV8834 Low-Voltage Stepper Motor Driver Carrier