> **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, 42×48mm, 4V, 1.2 A/Phase **Type:** Product page · **SKU:** POLOLU-1200 · **Brand:** [Pololu](https://core-electronics.com.au/brands/pololu-australia) **Page:** https://core-electronics.com.au/stepper-motor-unipolar-bipolar-200-steps-rev-42-48mm-4v-1-2-a-phase.html ([markdown](https://core-electronics.com.au/stepper-motor-unipolar-bipolar-200-steps-rev-42-48mm-4v-1-2-a-phase.html.md)) This NEMA 17-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 1.2 A at 4 V, allowing for a holding torque of 3.2 kg-cm (44 oz-in). ## Pricing - **Price:** $97.65 (inc GST) — $88.77 AUD, exc GST - **Quantity discounts:** 6+ $85.22 (exc GST) · 12+ $82.55 (exc GST) ## Availability & dispatch - Available with a lead time — expect dispatch between Aug 20 and Aug 24. ## How to buy - **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=POLOLU-1200:1` (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-1200:1.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 This hybrid stepping motor has a 1.8° step angle (200 steps/revolution). Each phase draws 1.2 A at 4 V, allowing for a holding torque of 3.2 kg-cm (44 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 one of Pololu's [bipolar stepper motor drivers](https://core-electronics.com.au/breakout-boards-and-modules/motor-drivers-controllers/stepper-motor-drivers.html) or one of Pololu's [Tic Stepper Motor Controllers](https://core-electronics.com.au/breakout-boards-and-modules/motor-drivers-controllers/stepper-motor-drivers.html). 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. | \| [![](https://core-electronics.com.au/attachments/localcontent/0J2469_203747aadb0.jpg)](https://core-electronics.com.au/attachments/localcontent/0J2469_3984935ddfb.jpg) \| \|---\| \| 5mm Pololu universal aluminum mounting hub on a stepper motor with a 5mm-diameter output shaft. \| | \| [![](https://core-electronics.com.au/attachments/localcontent/0J5627_18338ce127b.jpg)](https://core-electronics.com.au/attachments/localcontent/0J5627_527269eb330.jpg) \| \|---\|---\| \| NEMA 17 stepper motor (item #1200) mounted with a Pololu stamped aluminum L-bracket for NEMA 17 stepper motors. \| | |---| | [![](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. | Pololu's [5 mm universal mounting hub](https://core-electronics.com.au/pololu-universal-aluminum-mounting-hub-for-5mm-shaft-4-40-holes-2-pack.html) can be used to mount objects on the stepper motor’s 5 mm-diameter output shaft, and Pololu's [NEMA 17 aluminum bracket](https://core-electronics.com.au/pololu-stamped-aluminum-l-bracket-for-nema-17-stepper-motors.html) offers a variety of options for mounting this stepper motor in your project. A [similar NEMA17 stepper motor](https://core-electronics.com.au/stepper-motor-bipolar-200-steps-rev-42-38mm-2-8v-1-7-a-phase.html) is available [with a threaded rod output shaft](https://core-electronics.com.au/stepper-motor-with-28cm-lead-screw-bipolar-200-steps-rev-42-38mm-2-8v-1-7-a-phase.html) that converts its rotations into linear motion of the included traveling nut. **Specifications** - Size: 42.3 mm square × 48 mm, not including the shaft (NEMA 17) - Weight: 350 g (13 oz) - Shaft diameter: 5 mm “D” - Steps per revolution: 200 - Current rating: 1.2 A per coil - Voltage rating: 4 V - Resistance: 3.3 O per coil - Holding torque: 3.2 kg-cm (44 oz-in) - Inductance: 2.8 mH per coil - Lead length: 30 cm (12") - Output shaft supported by two ball bearings More specifications are available in the datasheet (189k pdf). **Dimensions** The following diagram shows the stepper motor dimensions in mm. The dimension labeled “length” is 48 mm. The output D-shaft has 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](https://core-electronics.com.au/pololu-universal-aluminum-mounting-hub-for-5mm-shaft-4-40-holes-2-pack.html). | ![](https://core-electronics.com.au/attachments/localcontent/0J2980_300255f3c38.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) | |---| **Note:** This stepper motor is SOYO part number SY42STH47-1206A. **People often buy this product together with:** | [![A4988 Stepper Motor Driver Carrier](https://core-electronics.com.au/attachments/localcontent/0J10064_4074c7c4a6.jpg)](https://core-electronics.com.au/a4988-stepper-motor-driver-carrier.html) | [A4988 Stepper Motor Driver Carrier](https://core-electronics.com.au/a4988-stepper-motor-driver-carrier.html) | |---|---| | [![Pololu Universal Aluminum Mounting Hub for 5mm Shaft, #4-40 Holes (2-Pack)](https://core-electronics.com.au/attachments/localcontent/0J2468_33052118e3.jpg)](https://core-electronics.com.au/pololu-universal-aluminum-mounting-hub-for-5mm-shaft-4-40-holes-2-pack.html) | [Pololu Universal Aluminum Mounting Hub for 5mm Shaft, #4-40 Holes (2-Pack)](https://core-electronics.com.au/pololu-universal-aluminum-mounting-hub-for-5mm-shaft-4-40-holes-2-pack.html) | |---|---| | [![Pololu Stamped Aluminum L-Bracket for NEMA 17 Stepper Motors](https://core-electronics.com.au/attachments/localcontent/0J5626_2887ef923a.jpg)](https://core-electronics.com.au/pololu-stamped-aluminum-l-bracket-for-nema-17-stepper-motors.html) | [Pololu Stamped Aluminum L-Bracket for NEMA 17 Stepper Motors](https://core-electronics.com.au/pololu-stamped-aluminum-l-bracket-for-nema-17-stepper-motors.html) | |---|---| **Dimensions** | Size: | 42.3 mm square × 48 mm (NEMA 17)[1](https://core-electronics.com.au/#note1) | |---|---| | NEMA size: | 17 | | Weight: | 350 g | | Shaft diameter: | 5 mm | **General specifications** | Shaft type: | 5 mm "D" | |---|---| | Current rating: | 1200 mA[2](https://core-electronics.com.au/#note2) | | Voltage rating: | 4 V | | Holding torque: | 44 oz·in | | Steps per revolution: | 200 | | Resistance: | 3.3 Ohm[2](https://core-electronics.com.au/#note2) | | Inductance per phase: | 2.8 mH | | Number of leads: | 6 | | Lead length: | 30 cm | **Notes:** 1Not including the shaft.2Per coil. **File downloads** - **SY42STH47-1206A stepper motor datasheet (189k pdf)** ## Images - [Product image 1](https://core-electronics.com.au/media/catalog/product/s/t/stepper_motor_unipolar_bipolar_200_steps_rev_42x48mm_4v_1.2_a_phase__pololu_1200__00.jpg)