Stepper Motor: Unipolar/Bipolar, 200 Steps/Rev, 42×48mm, 4V, 1.2 A/Phase

Stepper Motor: Unipolar/Bipolar, 200 Steps/Rev, 42×48mm, 4V, 1.2 A/Phase
Pololu item #: 1200 1417 in stock

Price break Unit price (US$)
1 19.95
10 17.96
50 15.96


backorders allowed

This NEMA 17-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 1.2 A at 4 V, allowing for a holding torque of 3.2 kg-cm (44 oz-in).

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 Description Specifications (13) Pictures (6) Resources (1) FAQs (2) 

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

Overview

This hybrid stepping motor has a 1.8° step angle (200 steps/revolution). Each phase draws 1.2 A at 4 V, allowing for a holding torque of 3.2 kg-cm (44 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 5 mm universal mounting hub can be used to mount objects on the stepper motor’s 5 mm-diameter output shaft. A similar NEMA17 stepper motor is available with a threaded rod output shaft that converts its rotations into linear motion of the included traveling nut.

Specifications

  • Size: 42.3 mm square × 48 mm, not including the shaft (NEMA 17)
  • Weight: 350 g (13 oz)
  • Shaft diameter: 5 mm “D”
  • Steps per revolution: 200
  • Current rating: 1.2 A per coil
  • Voltage rating: 4 V
  • Resistance: 3.3 Ω per coil
  • Holding torque: 3.2 kg-cm (44 oz-in)
  • Inductance: 2.8 mH per coil
  • Lead length: 30 cm (12″)

More specifications are available in the datasheet (189k pdf).

Dimensions

The following diagram shows the stepper motor dimensions in mm. The dimension labeled “length” is 48 mm. The output D-shaft has a 5 mm diameter with a section that is flattened by 0.5 mm. This shaft works with our 5 mm 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

Note: This stepper motor is SOYO part number SY42STH47-1206A.

People often buy this product together with:

A4988 Stepper Motor Driver Carrier A4988 Stepper Motor Driver Carrier
Pololu Universal Aluminum Mounting Hub for 5mm Shaft, #4-40 Holes (2-Pack) Pololu Universal Aluminum Mounting Hub for 5mm Shaft, #4-40 Holes (2-Pack)
A4988 Stepper Motor Driver Carrier with Voltage Regulators A4988 Stepper Motor Driver Carrier with Voltage Regulators