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Reduced price! Pololu 1204 - Stepper Motor: Bipolar, 200 Steps/Rev, 20x30mm, 3.9V, 600mA View larger

Pololu 1204 - Stepper Motor: Bipolar, 200 Steps/Rev, 20x30mm, 3.9V, 600mA

Stepper Motor: Bipolar, 200 Steps/Rev, 20x30mm, 3.9V, 600mA

More details

ID: 195538

20,63€ gross (23% VAT)
16,77€ net

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Data sheet

Coil current600 mA
Inductance of the coil1,7 mH
Torque180 g-cm
Coil resistance6,5 Ω
Shaft diameter4 mm
Resolution200 step/rev
Voltage3,9 V
Weight60 g

More info

Stepper Motor: Bipolar, 200 Steps/Rev, 20x30mm, 3.9V, 600mA

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). With a weight of 60 g, this is the smallest stepper motor we carry.

Note: As of July 16, 2012, this stepper motor has a D-shaft in place of the previously cylindrical shaft. The shaft diameter is still 4 mm, but now a section of the cylinder has been flattened by 0.5 mm. Adapters that worked with the previous shaft should work fine with the new shaft, and the flattened section lets the new shaft work better with set screws.

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

Overview

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

Specifications

  • Size: 20 mm square x 30 mm, not including the shaft (NEMA 8)
  • Weight: 60 g (2 oz)
  • Shaft diameter: 4 mm “D”
  • Steps per revolution: 200
  • Current rating: 600 mA per coil
  • Voltage rating: 3.9 V
  • Resistance: 6.5 Ohm per coil
  • Holding torque: 180 g-cm (2.5 oz-in)
  • Inductance: 1.7 mH per coil
  • Lead length: 12 in

Dimensions

The following diagram shows the stepper motor dimensions in mm. The dimension labeled “Length” is 30 mm. The output shaft has a length of 15 mm and a diameter of 4 mm. Though not shown in the diagram, the output is a D-shaft with a section that is flattened by 0.5 mm.

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
  • Laser cutters
  • Pick and place machines
  • Linear actuators
  • Hard drives
Bipolar stepper motors; from left to right: 20×30, 28×32, 28×45, 35×26, 35×28, 35×36mm.

People often buy this product together with:

Pololu Universal Aluminum Mounting Hub for 4mm Shaft Pair, 4-40 HolesPololu Universal Aluminum Mounting Hub for 4mm Shaft Pair, 4-40 Holes
A4988 Stepper Motor Driver CarrierA4988 Stepper Motor Driver Carrier
Stepper Motor: Bipolar, 200 Steps/Rev, 28x32mm, 3.8V, 670mAStepper Motor: Bipolar, 200 Steps/Rev, 28x32mm, 3.8V, 670mA

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