---
product_id: 44275381
title: "Greartisan DC 12V 100RPM Gear Motor High Torque Electric Micro Speed Reduction Geared Motor Centric Output Shaft 37mm Diameter Gearbox"
brand: "greartisan"
price: "KSh7637"
currency: KES
in_stock: true
reviews_count: 13
category: "Greartisan"
url: https://www.desertcart.co.ke/products/44275381-greartisan-dc-12v-100rpm-gear-motor-high-torque-electric-micro
store_origin: KE
region: Kenya
---

# Bidirectional rotation with torque control 30% power boost with pure copper rotor All-metal gears for max durability Greartisan DC 12V 100RPM Gear Motor High Torque Electric Micro Speed Reduction Geared Motor Centric Output Shaft 37mm Diameter Gearbox

**Brand:** greartisan
**Price:** KSh7637
**Availability:** ✅ In Stock

## Summary

> ⚡ Tiny Beast, Massive Torque — Power Your Innovation with Greartisan!

## Quick Answers

- **What is this?** Greartisan DC 12V 100RPM Gear Motor High Torque Electric Micro Speed Reduction Geared Motor Centric Output Shaft 37mm Diameter Gearbox by greartisan
- **How much does it cost?** KSh7637 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.ke](https://www.desertcart.co.ke/products/44275381-greartisan-dc-12v-100rpm-gear-motor-high-torque-electric-micro)

## Best For

- greartisan enthusiasts

## Why This Product

- Trusted greartisan brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact Yet Mighty:** Tiny 37mm gearbox footprint packs a punch, ideal for everything from vending machines to high-end hobby projects.
- • **Unmatched Durability:** All-metal gears engineered for high abrasion and heat resistance, ensuring your projects run longer without a hitch.
- • **Power-Packed Performance:** Precision-wound pure copper wire rotor delivers a 30% instant power surge—because efficiency is the new luxury.
- • **Precision Torque Control:** Low noise, high torque output (4.5Kg.cm) with adjustable speed down to 10 RPM, perfect for smooth, heavy-duty applications.
- • **Versatile Bidirectional Rotation:** Easily switch rotation direction to fit your custom setups, maximizing flexibility without sacrificing reliability.

## Overview

The Greartisan DC 12V 100RPM Gear Motor features a robust all-metal gear system and a pure copper wire core rotor that boosts power by 30%. Its compact 37mm gearbox and D-shaped hardened steel output shaft deliver high torque (4.5Kg.cm) with low noise, supporting bidirectional rotation and precise speed reduction. Designed for durability and versatility, it’s perfect for professional-grade applications like vending machines, robotics, and automated devices.

## Description

Specifications: Rated Voltage: DC 12V Reduction Ratio: 1: 31.6 No-Load Speed: 100RPM Rated Torque: 4.5Kg.cm Rated Current: 1.1Amp D Shaped Output Shaft Size: 6*14mm (0.24" x 0.55") (D*L) Gearbox Size: 37 x 24.5mm (1.46" x 0.96") (D*L) Motor Size: 36.2 x 33.3mm (1.43" x 1.31") (D*L) Mounting Hole Size: M3 (not included) Application: Vending equipments, pan camera, slot machine, money detector, coin refund devices, automatic doors, peritoneal machine, toys motor etc. Packages: - 1 x DC Geared Motor PLEASE NOTE: 1.Use tolerance: Pay attention to the use of voltage and current range, otherwise the motor performance and motor life will decline. 2.Handling motors: Gently, as far as possible the use of motor shell part. 3.Motor wiring: Red lead to the positive electrode, black lead to the negative pole, if reversed, the motor rotation in the opposite direction. 4.Overload: As far as possible within the specified load range, prohibit motor blocking or close to the stall state for too long time to runs. Otherwise, the motor will burn out. 5.Motor storage: -- Storage temperature: 0℃ - 40℃; -- Storage humidity: 15% -90% RH; -- Avoid placing in high temperature, high humidity and corrosive gases. 6.Motor use temperature: 0℃ - 70℃

Review: Strong, and smooth - Works perfectly! Much more powerful than I expected.
Review: Tiny Little BEAST - This little guy is super tiny, yet an absolute BEAST. Manages to keep the 2.5 rpm (5rpm motor geared down to 2.5) while rotating the huge 26" diameter and over 30" long horn on my siren. 1/2 Scale ACA Hurricane MKII. $15 motor, comes to my door in like 2 days. Absolutely worth the money, great little motor. Uses M3 machine screws to mount it. With no load, it's pretty much silent. With a large load, it makes some noise but is still pretty quiet in general terms. When it's on the pole rotating the head, i can barely hear the motor at all. With the chopper running, it's literally impossible to hear this motor.

## Features

- 【ALL-METAL GEARS】: High-temperature resistance, high abrasion resistance, strong load capacity, sturdy and durable, effectively protect the gear box motor body.
- 【PURE COPPER WIRE CORE ROTOR】: With precision winding technology, the geared motor power instant increased by 30%.
- 【D SHAPED OUTPUT SHAFT】: Using high hardness steel, good toughness, impact resistance, the quality of the bearing and the service life of the gear motor are improved, extremely durable.
- 【POSITIVE-NEGATIVE ROTATION】: You also can adjust the speed, but the motor speed can only be reduced, can not be raised. Low noise and high torque, such as 10rpm can drive 15 kilograms.
- 【RELIABLE GURANTEE】: Any quality issues, we promise 100% unconditional return service. If you need other voltage and rpm, please feel free to contact us!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B072R57C56 |
| Best Sellers Rank | #8,193 in Toys & Games ( See Top 100 in Toys & Games ) #10 in Hobby Remote & App Controlled Vehicle Parts |
| Brand | Greartisan |
| Date First Available | June 15, 2017 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 6.9 ounces |
| Item model number | Greartisan |
| Manufacturer | Greartisan |
| Material | Metal |
| Model Name | gear |
| Product Dimensions | 1.46"W x 1.46"H |
| Speed | 100 RPM |
| UPC | 766330626869 |
| Voltage | 12 Volts |

## Product Details

- **Brand:** Greartisan
- **Model Name:** gear
- **Product Dimensions:** 1.46"W x 1.46"H
- **Speed:** 100 RPM
- **Voltage:** 12 Volts

## Images

![Greartisan DC 12V 100RPM Gear Motor High Torque Electric Micro Speed Reduction Geared Motor Centric Output Shaft 37mm Diameter Gearbox - Image 1](https://m.media-amazon.com/images/I/611r7E3K3zL.jpg)

## Available Options

This product comes in different **Color, Size** options.

## Questions & Answers

**Q: So if I have an average rpm of 100 rpm and the rates torque is .45 kgcm, does that mean this has a power output of 4000 Watts?**
A: I know this answer is coming to you 3 years too late - and you probably figured this all out. Just in case - here is how you can calculate the power from the torque and RPM. A couple of quick notes: Torque is force times length - kg is not a force but a mass. If the "torque" is given in kg*cm - then this is not a proper torque number. It should be in Newton*cm. Newton is the unit for force and kg for mass. The force a mass experiences here on earth is the mass multiplied by the earth's acceleration of the mass in the earth's gravity. This acceleration is 9.81 m/s/s (meters per seconds squared). This unit is the same as N/kg (not that readily visible - but for now we'll just accept that as correct). Now we can calculate the proper torque by multiplying the two numbers: 4.5kg*cm * 9.81 N/kg = 44.2 N*cm. Power is work done per time - work, energy and torque are identical units of measure - force times length - the continuously delivered torque is the same as the work done by the motor. However, for the power to be correct we have to express work in N*m (SI units) - not N*cm. So we have translate N*cm into N*m. 100 cm = 1 m or 1cm = 0.01 m. We can just simply replace the cm with 0.01m and well get the torque (work) in N*m - 4.42N* 0.01m = 0.442 N*m. Next: power is Nm/s in SI units - that means we have to express 100 rpm in rps (revolutions per second = rev/sec). 1 min = 60 seconds. 
100 rpm = 100 revs per 60 secs = 100/60 rps = 1.7 rps. Now we can calculate the power in N*m/s: 0.442N*m * 1.7 rps = 0.74N * m / s = 0.74W of mechanical power - which is even less power.  Of course that's only correct if the 4.5kgcm number is correct for the motor. Some of the suggestions were to use the electrical power of the motor to estimate the mechanical output power. That too is a legit approach - however, that power setting given must be under the same conditions for which the mechanical output was given. E.g. the motor must run at 100 rpm and deliver the torque given - only then the current draw by the motor and the voltage accross the motor can be used to calculate the approximate mechanical power. For example - if the motor draws 1A at 12V when stalled out (motor is slowed down to a stop), then this is not the same condition as running the motor at 100 rpm. Sometimes the specifications given for those products can be a bit questionable.

**Q: Can this fit into a 1/4” metal rod? With a shaft collar or something?**
A: If you are widening a coupler and you can, use a drill press or milling machine.  Be sure the setup is as rigid as possible.  Use a "reamer" 1/4" in diameter if you can get one.  They are special purpose tooling but get used all the time for this exact job.  They cost a few dollars. Use very low speed or even turn the chuck by hand.  Do not use a hand dill at full speed with a twist bit.  I would rather use 400 grit sand paper or fine abrasive padding than any sort of standard drill and bit.

**Q: How many rotations does this motor make a minute**
A: As stated on the label.... 100 revolutions per minute (rpm)

**Q: Is this brushed or brushless?**
A: this is a brushed motor

## Customer Reviews

### ⭐⭐⭐⭐⭐ Strong, and smooth
*by T***M on November 13, 2025*

Works perfectly! Much more powerful than I expected.

### ⭐⭐⭐⭐⭐ Tiny Little BEAST
*by N***1 on January 1, 2025*

This little guy is super tiny, yet an absolute BEAST. Manages to keep the 2.5 rpm (5rpm motor geared down to 2.5) while rotating the huge 26" diameter and over 30" long horn on my siren. 1/2 Scale ACA Hurricane MKII. $15 motor, comes to my door in like 2 days. Absolutely worth the money, great little motor. Uses M3 machine screws to mount it. With no load, it's pretty much silent. With a large load, it makes some noise but is still pretty quiet in general terms. When it's on the pole rotating the head, i can barely hear the motor at all. With the chopper running, it's literally impossible to hear this motor.

### ⭐⭐⭐⭐ Low RPM's with torque.
*by D***. on January 15, 2026*

Well. So far. So good. I'm using this motor for a signaling Cannon I just finished putting together. It is raising and lowering the barrel. I wanted a motor with low RPM's and torque. This seems to be doing the job well at this point. If issues arise. I shall inform all who read.

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*Product available on Desertcart Kenya*
*Store origin: KE*
*Last updated: 2026-02-10*