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Stepper Motor: Bipolar, 200 Steps/Rev, 35×26mm, 7.4V, 0.28 A/Phase

Product Code: Pololu #1207

Stepper Motor: Bipolar, 200 Steps/Rev, 35×26mm, 7.4V, 0.28 A/Phase

₹1,289.00
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This hybrid bipolar stepping motor has a 1.8° step angle (200 steps/revolution). Each phase draws 280 mA at 7.4 V, allowing for a holding torque of 650 g-cm (9 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 5mm universal mounting hub can be used to mount objects on the stepper motor’s 5mm-diameter output shaft.

Specifications

  • Size: 35 mm square × 26 mm, not including the shaft (NEMA 14)
  • Weight: 130 g (4.5 oz)
  • Shaft diameter: 5 mm
  • Steps per revolution: 200
  • Current rating: 280 mA per coil
  • Voltage rating: 7.4 V
  • Resistance: 26 Ohm per coil
  • Holding torque: 650 g-cm (9 oz-in)
  • Inductance: 19.2 mH per coil
  • Lead length: 12 in

 

 

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

Dimensions

The following diagram shows the stepper motor dimensions in mm. The dimension labeled “length” is 26 mm. The output shaft has a length of 21 mm and a diameter of 5 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.
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