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

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

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SKU: POLOLU-1207 Brand: Pololu

This NEMA 14-size 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).

$36.15 AUD, inc GST

$32.86 AUD, exc GST

Available with a lead time
Expect dispatch between Dec 03 and Dec 06

Quantity Discounts:

10-25 $31.88 (exc GST)
25+ $31.22 (exc GST)

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 Pololu recommend using a bipolar stepper motor driver or one of Pololu's Tic Stepper Motor Controllers. In particular, the Tics make control easy because they support six different interfaces (USB, TTL serial, I²C, RC, analog voltages, and quadrature encoder) and are configurable over USB with Pololu's free configuration utility.

5mm Pololu universal aluminum mounting hub on a stepper motor with a 5mm-diameter output shaft.

NEMA 14 stepper motor (item #1207) mounted with a Pololu stamped aluminum L-bracket for NEMA 14 stepper motors.

Bipolar stepper motor wires are terminated with bare leads.

Bipolar stepper motor wiring diagram.

Pololu's 5 mm universal mounting hub can be used to mount objects on the stepper motor’s 5 mm-diameter output shaft, and Pololu's NEMA 14 aluminum bracket offers a variety of options for mounting this stepper motor in your project.

Specifications

Size: 35 mm square × 26 mm, not including the shaft (NEMA 14)
Weight: 130 g (4.5 oz)
Shaft diameter: 5 mm “D”
Steps per revolution: 200
Current rating: 280 mA per coil
Voltage rating: 7.4 V
Resistance: 26 O per coil
Holding torque: 650 g-cm (9 oz-in)
Inductance: 19.2 mH per coil
Lead length: 30 cm (12")
Output shaft supported by two ball bearings

More specifications are available in the datasheet (37k pdf).

Dimensions

The following diagram shows the stepper motor dimensions in mm. The dimension labeled “length” is 26 mm. The output D-shaft has a length of 21 mm and a 5 mm diameter with a section that is flattened by 0.5 mm. This shaft works with Pololu's 5 mm universal mounting hub.

The inside of a bipolar stepper motor (SOYO NEMA 14-size).

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 SY35ST26-0284A.

People often buy this product together with:

A4988 Stepper Motor Driver Carrier

Pololu Universal Aluminum Mounting Hub for 5mm Shaft, #4-40 Holes (2-Pack)

Stepper Motor: Bipolar, 200 Steps/Rev, 35×28mm, 10V, 0.5 A/Phase

Dimensions

Size:	35 mm square × 26 mm¹
NEMA size:	14
Weight:	130 g
Shaft diameter:	5 mm

General specifications

Shaft type:	5 mm "D"
Current rating:	280 mA²
Voltage rating:	7.4 V
Holding torque:	9 oz·in
Steps per revolution:	200
Resistance:	26 Ohm²
Inductance per phase:	19.2 mH
Number of leads:	4
Lead length:	30 cm

Notes:

1: Not including the shaft.
2: Per coil.

File downloads

SY35ST26-0284A stepper motor datasheet (37k pdf)
3D model of the SY35ST26-0284A stepper motor (Pololu item #1207) (3MB step)

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