> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt # Stepper Motor: Unipolar/Bipolar, 200 Steps/Rev, 57×76mm, 4.5V, 2 A/Phase **Type:** Product page · **SKU:** POLOLU-1475 · **Brand:** [Pololu](https://core-electronics.com.au/brands/pololu-australia) **Page:** https://core-electronics.com.au/stepper-motor-unipolar-bipolar-200-steps-rev-57-76mm-4-5v-2-a-phase.html ([markdown](https://core-electronics.com.au/stepper-motor-unipolar-bipolar-200-steps-rev-57-76mm-4-5v-2-a-phase.html.md)) This NEMA 23-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 2 A at 4.5 V, allowing for a holding torque of 14 kg-cm (190 oz-in). ## Pricing - **Price:** $289.95 (inc GST) — $263.59 AUD, exc GST - **Quantity discounts:** 3+ $255.68 (exc GST) · 5+ $250.41 (exc GST) ## Availability & dispatch - Available with a lead time — expect dispatch between Aug 17 and Aug 20. ## How to buy - **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=POLOLU-1475:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart. - **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/POLOLU-1475:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.) - **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there. - **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works) - **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt ## Description | [![](https://core-electronics.com.au/attachments/localcontent/0J2977_13939d2264e.jpg)](https://core-electronics.com.au/attachments/localcontent/0J2977_11248715419.jpg) | |---| | 6-lead, unipolar/bipolar stepper motor wires are terminated with bare leads. | | ![](https://core-electronics.com.au/attachments/localcontent/0J2979_18200c4621.gif) | |---| | 6-lead, unipolar/bipolar stepper motor wiring diagram. | This high-torque hybrid stepping motor has a 1.8° step angle (200 steps/revolution). Each phase draws 2 A at 4.5 V, allowing for a holding torque of 14 kg-cm (190 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). Pololu recommend using it as a bipolar stepper motor and controlling it with an appropriately powerful [bipolar stepper motor driver](https://core-electronics.com.au/breakout-boards-and-modules/motor-drivers-controllers/stepper-motor-drivers.html), such as Pololu's [High-Power Stepper Motor Driver 36v4](https://core-electronics.com.au/pololu-high-power-stepper-motor-driver-36v4.html), or Pololu's [Tic 36v4 High-Power Stepper Motor Controller](https://core-electronics.com.au/pololu-tic-36v4-usb-multi-interface-high-power-stepper-motor-controller.html). In particular, the Tic makes control easy because it supports six different interfaces (USB, TTL serial, I²C, RC, analog voltages, and quadrature encoder) and is configurable over USB with Pololu's free configuration utility. | [![](https://core-electronics.com.au/attachments/localcontent/0J6183_22306ccfa6d.jpg)](https://core-electronics.com.au/attachments/localcontent/0J6183_2595935f0c9.jpg) | |---| | NEMA 23 stepper motor (item #1475) mounted with a steel L-bracket for NEMA 23 stepper motors. | Pololu's [1/4" universal mounting hub](https://core-electronics.com.au/pololu-universal-aluminum-mounting-hub-for-1-4-shaft-4-40-holes-2-pack.html) and [1/4" scooter wheel adapter](https://core-electronics.com.au/pololu-aluminum-scooter-wheel-adapter-for-1-4-shaft.html) can be used to mount objects on the stepper motor’s 1/4"-diameter output shaft, and Pololu carry a [NEMA 23 steel bracket](https://core-electronics.com.au/steel-l-bracket-for-nema-23-stepper-motors.html) for securely mounting this stepper motor to a flat surface. **Specifications** - Size: 56.4 mm square × 76 mm, not including the shaft (NEMA 23) - Weight: 1 kg (35 oz) - Shaft diameter: 6.35 mm (0.25") “D” - Steps per revolution: 200 - Current rating: 2 A per coil - Voltage rating: 4.5 V - Resistance: 2.25 O per coil - Holding torque: 14 kg-cm (190 oz-in) - Inductance: 3.6 mH per coil - Lead length: 30 cm (12") - Output shaft supported by two ball bearings More specifications are available in the datasheet (39k pdf). **Dimensions** The following diagram shows the stepper motor dimensions in mm. The output D-shaft has a 0.25" (6.35 mm) diameter with a section that is flattened by 0.5 mm. This shaft works with Pololu's [1/4" universal mounting hub](https://core-electronics.com.au/pololu-universal-aluminum-mounting-hub-for-1-4-shaft-4-40-holes-2-pack.html) and [1/4" scooter wheel adapter](https://core-electronics.com.au/pololu-aluminum-scooter-wheel-adapter-for-1-4-shaft.html). | ![](https://core-electronics.com.au/attachments/localcontent/0J4513_31117c2a936.jpg) | |---| | [![](https://core-electronics.com.au/attachments/localcontent/0J2297_3186898a777.jpg)](https://core-electronics.com.au/attachments/localcontent/0J2297_246528185f4.jpg) | |---| | 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 | [![](https://core-electronics.com.au/attachments/localcontent/0J4511_6816439839d.jpg)](https://core-electronics.com.au/attachments/localcontent/0J4511_16633f7f040.jpg) | |---| | Pololu’s assortment of stepper motors. | **Note:** This stepper motor is SOYO part number SY57STH76-2006A. **People often buy this product together with:** | [![Pololu Universal Aluminum Mounting Hub for 1/4](https://core-electronics.com.au/attachments/localcontent/0J5002_3605ff5eca.jpg)](https://core-electronics.com.au/pololu-universal-aluminum-mounting-hub-for-1-4-shaft-4-40-holes-2-pack.html) | [Pololu Universal Aluminum Mounting Hub for 1/4" (6.35mm) Shaft, #4-40 Holes (2-Pack)](https://core-electronics.com.au/pololu-universal-aluminum-mounting-hub-for-1-4-shaft-4-40-holes-2-pack.html) | |---|---| | [![Steel L-Bracket for NEMA 23 Stepper Motors](https://core-electronics.com.au/attachments/localcontent/0J6182_42964164ec.jpg)](https://core-electronics.com.au/steel-l-bracket-for-nema-23-stepper-motors.html) | [Steel L-Bracket for NEMA 23 Stepper Motors](https://core-electronics.com.au/steel-l-bracket-for-nema-23-stepper-motors.html) | |---|---| | [![DRV8825 Stepper Motor Driver Carrier, High Current](https://core-electronics.com.au/attachments/localcontent/0J4226_497407771f.jpg)](https://core-electronics.com.au/drv8825-stepper-motor-driver-carrier-high-current.html) | [DRV8825 Stepper Motor Driver Carrier, High Current](https://core-electronics.com.au/drv8825-stepper-motor-driver-carrier-high-current.html) | |---|---| **Dimensions** | Size: | 56.4 mm square × 76 mm[1](https://core-electronics.com.au/#note1) | |---|---| | NEMA size: | 23 | | Weight: | 1000 g | | Shaft diameter: | 6.35 mm | **General specifications** | Shaft type: | 1/4 inch "D" | |---|---| | Current rating: | 2000 mA[2](https://core-electronics.com.au/#note2) | | Voltage rating: | 4.5 V | | Holding torque: | 190 oz·in | | Steps per revolution: | 200 | | Resistance: | 2.25 Ohm[2](https://core-electronics.com.au/#note2) | | Inductance per phase: | 3.6 mH | | Number of leads: | 6 | | Lead length: | 30 cm | **Notes:** 1Not including the shaft.2Per coil. **File downloads** - **SY57STH76-2006A stepper motor datasheet (39k pdf)** - **3D model of the SY57STH76-2006A stepper motor (Pololu item #1475) (3MB step)** ## Images - [Product image 1](https://core-electronics.com.au/media/catalog/product/s/t/stepper_motor_unipolar_bipolar_200_steps_rev_57x76mm_4.5v_2_a_phase__pololu_1475__00.jpg)