> **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

# Bipolar Stepper Motor with Planet Gear Box (18kg.cm)

**Type:** Product page · **SKU:** FIT0349 · **Brand:** [DFRobot](https://core-electronics.com.au/brands/dfrobot-australia)
**Page:** https://core-electronics.com.au/bipolar-stepper-motor-with-planet-gear-box-18kg-cm.html ([markdown](https://core-electronics.com.au/bipolar-stepper-motor-with-planet-gear-box-18kg-cm.html.md))

This is a bipolar stepper motor with a planetary gearbox (gear ratio: 5.18) and uses a standard 8mm-diameter D type output shaft, with a 1.8° step angle (200 steps/revolution).

## Pricing

- **Price:** $68.65 (inc GST) — $62.41 AUD, exc GST
- **Quantity discounts:** 6+ $59.29 (exc GST) · 12+ $56.79 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Aug 24 and Aug 28.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=FIT0349:1` (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/FIT0349:1.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 bipolar stepper motor with a planet gearbox (gear ratio: 5.18) uses a standard 8mm-diameter D-type output shaft and has a 1.8° step angle (200 steps/revolution). Each phase draws 1.0 A at 3.4 V, allowing for a holding torque of 18kg-cm (176N-cm) (200rpm). The motor has a body dimension of 42mm square and 40mm in length, while the planet gearbox is 36mm in diameter and 27mm in length. The motor has four colour-coded wires terminated with bare leads: black and green connect to one coil; red and blue connect to the other. It can be easily mounted with 4 M3 threaded holes and can be controlled with the [Dual Bipolar Stepper Motor Shield for Arduino (DRV8825)](https://core-electronics.com.au/dual-bipolar-stepper-motor-shield-for-arduino-a4988.html). Notice: please carefully confirm techical details (torque, dimension, mounting, etc) for your project(s) before purchasing.

![](https://core-electronics.com.au/attachments/localcontent/FIT0349-Dimension_31982ad65ba.jpg)

## APPLICATIONS

- Printer
- 3D Printer
- CNC
- Robotics
- Linear Actuators
 
## SPECIFICATION

- Model No: 42BYGH40-18-22A-C5.18
- Step Angle (degrees) :1.8
- 2 Phase
- Voltage: 3.4V
- Current: 1.0A
- Resistance: 1.7±10% Ohm/Phase
- Inductance: 4.3±20% mH/Phase
- Holding Torque: 3600 g.cm
- Detent Torque: 400 g.cm
- Insulation Class: B
- Life: 6000 hours
- Gear Ratio: 5.18:1
- Hold Torque with Gearbox: 18kg·cm (176N·cm) (200rpm)
- Dimension: 42×42×40mm(1.65x1.65x1.57")
- Mounting: 4 x M3
 
## DOCUMENTS

- [Mechanic Datasheet](https://core-electronics.com.au/attachments/localcontent/FIT0349-42BYGH40-18-22A-C5_10488d31b79.pdf)
 
## SHIPPING LIST

- Stepper Motor with Planet Gear Box ×1

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/f/i/fit0349.jpg)