Stepper Motor: Bipolar, 200 Steps/Rev, 42×38mm, 2.8V, 1.7 A/Phase

Stepper Motor: Bipolar, 200 Steps/Rev, 42×38mm, 2.8V, 1.7 A/Phase
Pololu item #: 2267 488 in stock

Price break Unit price (US$)
1 16.95
10 15.26
50 13.56


backorders allowed

This NEMA 17-size hybrid bipolar stepping motor has a 1.8° step angle (200 steps/revolution). Each phase draws 1.7 A at 2.8 V, allowing for a holding torque of 3.7 kg-cm (51 oz-in).

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 Description Specs (13) Pictures (6) Resources (1) FAQs (2) On the blog (1) 

Bipolar stepper motor wires are terminated with bare leads.
Bipolar stepper motor wiring diagram.

Overview

This hybrid bipolar stepping motor has a 1.8° step angle (200 steps/revolution). Each phase draws 1.7 A at 2.8 V, allowing for a holding torque of 3.7 kg-cm (51 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 DRV8825 stepper motor driver carrier is probably the best option for this stepper motor.

Our 5 mm universal mounting hub can be used to mount objects on the stepper motor’s 5 mm-diameter output shaft. This NEMA17 stepper motor is also 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 × 38 mm, not including the shaft (NEMA 17)
  • Weight: 285 g (10 oz)
  • Shaft diameter: 5 mm “D”
  • Steps per revolution: 200
  • Current rating: 1.68 A per coil
  • Voltage rating: 2.8 V
  • Resistance: 1.65 Ω per coil
  • Holding torque: 3.7 kg-cm (51 oz-in)
  • Inductance: 3.2 mH per coil
  • Lead length: 30 cm (12″)

More specifications are available in the datasheet (39k pdf).

Dimensions

The following diagram shows the stepper motor dimensions in mm. The dimension labeled “length” is 38 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

Pololu’s assortment of stepper motors.

Note: This stepper motor is SOYO part number SY42STH38-1684A.

People often buy this product together with:

DRV8825 Stepper Motor Driver Carrier, High Current DRV8825 Stepper Motor Driver Carrier, High Current
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 A4988 Stepper Motor Driver Carrier