> **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

# 5202 Series Yellow Jacket Planetary Gear Motor (139:1 Ratio, 24mm Length 6mm D-Shaft, 43 RPM, ø36mm Gearbox, 3.3 - 5V Encoder)

**Type:** Product page · **SKU:** GB-5202-2402-0139 · **Brand:** [goBilda](https://core-electronics.com.au/brands/gobilda)
**Page:** https://core-electronics.com.au/5202-series-yellow-jacket-planetary-gear-motor-1391-ratio-24mm-length-6mm-d-shaft-43-rpm-36mm-gearbox-33-5v-encoder.html ([markdown](https://core-electronics.com.au/5202-series-yellow-jacket-planetary-gear-motor-1391-ratio-24mm-length-6mm-d-shaft-43-rpm-36mm-gearbox-33-5v-encoder.html.md))

This 139:1 ratio gear motor runs at a no-load speed of 43RPM when 12VDC is applied. Mounted to the back of the

## Pricing

- **Price:** $104.95 (inc GST) — $95.41 AUD, exc GST
- **Quantity discounts:** 10+ $90.64 (exc GST) · 25+ $85.87 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Aug 17 and Aug 20.

## How to buy

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- **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there.
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## Description

This 139:1 ratio gear motor runs at a no-load speed of 43RPM when 12VDC is applied. Mounted to the back of the [Modern Robotics/MATRIX 12VDC Motor](https://core-electronics.com.au/modern-roboticsmatrix-12vdc-motor.html) driving the gearbox is a quadrature encoder able to run on both 3.3V and 5V. Its bullet connectors are a reliable connection style that allows you to easily reverse polarity to the motor and pass its wires through 14mm holes in goBILDA® channel, even when grommets are installed.

### Downloads

- [ STEP File ](https://core-electronics.com.au/attachments/localcontent/5202-2402-0139_2418026da61.zip)
- [ Spec Sheet ](https://core-electronics.com.au/attachments/localcontent/5202-2402-0139_spec_sheet_845650c708b.pdf)

### Specs

| Motor Size | RS-555 |
|---|---|
| Motor Type | Brushed DC |
| Nominal Voltage | 12VDC |
| Output Shaft | 6mm D |
| Gearbox Style | Planetary |
| Gear Ratio | 139:1 |
| Gear Ratio Formula | ((((1+(46/11))) \* (1+(46/11))) \* (1+(46/11))):1 |
| Gear Material | Steel |
| No-Load Speed @ 12VDC | 43 RPM |
| No-Load Current @12VDC | 0.25A |
| Stall Current @12VDC | 9.2A |
| Stall Torque @12VDC | 185 kg.cm (2,570 oz-in) |
| Wire Length | 470mm (including connectors) |
| Wire Gauge | 18AWG |
| Motor Connector Type | 3.5mm FH-MC Bullet Connectors |
| Encoder Connector Type | 4-Pos JST XH \[FH-MC\] |
| Encoder Type | Relative, Quadrature |
| Encoder Sensor Type | Magnetic (Hall Effect) |
| Encoder Voltage Range | 3.3 - 5VDC |
| Encoder Resolution | 3,895.9 PPR at the Output Shaft |
| Encoder Resolution Formula | (((((1+(46/11))) \* (1+(46/11))) \* (1+(46/11))) \* 28) |
| Weight | 483g |
| IP | Patented |

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/G/B/GB-5202-2402-0139-1.jpg)