How much weight can this motor lift if it was used for a "mini" garage door opener? Door would be 50"x30". Approximately 30lbs

The maximum torque this motor could produce is approximately 0.67 lb-in peak at close to stall. The stated speed 120 RPM is assumed to be a no-load value. Using a more reasonable operating 60% of these values, the motor may approximately produce 0.4 lb-in at 90 RPM. The power available from this unit is approximately .426 watts. You want to lift a 30 lb door 30 (?) inches in an assumed 10 seconds which is approximately 10 watts. So what you are asking is will a 0.43 watt motor power a 10 watt requirement. The answer is no. (The preceding power requirement calculation does not address any added wattage requirement due to friction or drive efficiency losses which would increase the "no" to a "HELL NO")

Can I use a 12V 1A adapter with this motor?

Depends on your application. I got 20 RPM motor: no load at 12V ~100mA. No load start-up 2A. I think stall test was nearly 4A.

Do these leak grease from the gear box?

Nope no sign of any grease leaking out yet

If this motor is used as a wind turbine generator, will it output 12v at 200rpm?

I used mine as a hand crank phone charger that charged a battery pack. I worked great and the output will vary based on your load and speed, so it will probably have a lower voltage than 12v at 200RPM. You'll want to put it through a full bridge rectifier with a capacitor in parallel to produce a DC voltage, however the diodes and capacitor will also drop your voltage. The battery pack I was using was only around 6 to 7 volts DC, also the gearing in the motor is really high so for a wind turbine you would probably have to help start the blades to get them to spin.

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DC 12V 30RPM Gear Motor High Torque Electric Micro Speed Reduction Geared Motor Eccentric Output Shaft 37mm Diameter Gearbox

DC 12V 30RPM Gear Motor High Torque Electric Micro Speed Reduction Geared Motor Eccentric Output Shaft 37mm Diameter Gearbox

Product ID: 445364224

Details

Brand
Greartisan
Horsepower
30 Watts
Model name
gear
Speed
30 RPM
Voltage
12 Volts

🔄Bidirectional rotation with speed control

🔋30% power boost with pure copper rotor

⚙️All-metal gears for max durability

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34742CFA

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Description

⚡ Gear up your projects with power, precision, and durability!

RUGGED OUTPUT SHAFT - D-shaped hardened steel shaft boosts impact resistance and extends motor lifespan for relentless reliability.
RISK FREE INVESTMENT - Backed by a 100% unconditional return policy—custom voltage and speed options available to fit your exact needs.
UNMATCHED DURABILITY - All-metal gears engineered for high abrasion and heat resistance, ensuring your motor outlasts the competition.
VERSATILE SPEED CONTROL - Easily switch rotation direction and fine-tune speed down to 10 RPM with high torque to drive loads up to 15 kg.
POWER PACKED PERFORMANCE - Precision-wound pure copper wire rotor delivers an instant 30% increase in power—because efficiency matters.

The DC 12V 30RPM Gear Motor by Greartisan features a robust all-metal gearbox with a 37mm diameter, a pure copper wire core rotor boosting power by 30%, and a hardened D-shaped output shaft for enhanced durability. Designed for low noise and high torque, it supports bidirectional rotation and precise speed reduction, making it ideal for vending machines, cameras, toys, and more. Rated at 12Kg.cm torque and 0.92Amp current, this motor combines industrial-grade reliability with versatile application potential.

Specifications

ASIN	B071GTTX4D
Best Sellers Rank	8,775 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 2 in Gearboxes, Gearheads & Speed Reducers
Brand	Greartisan
Country Of Origin	China
Customer Reviews	4.6 out of 5 stars 77 Reviews
Horsepower	30 Watts
Manufacturer	Greartisan
Manufacturer Part Number	Greartisan
Material	Copper
Model Name	gear
Model Number	Greartisan
Model name	gear
Speed	30 RPM
UPC	766330626944
Unit Count	1.0 count
Voltage	12 Volts

Reviews

A**S

Good Device

Built two automatic ice fishing rod jigging machines. After a season of use, one of the gearboxes got louder. It is very easy to remove the two screws on the shaft end to grease the gears. They are indeed all metal construction - no plastic gears.

8.03.2026

J**E

Sehr guter Motor

Super Qualität 👍

14.06.2026

J**L

It works

The size of the motor was perfect to create a rotation device for a roaster. Low noise, just the right amount of power as I wanted to spin slow. It worked as intended.

4.12.2024

R**T

Sehr leise und kraftvoll. Super für Modellbau.

Habe 6 Stück für meinen "MARS 2020 Persevereance" Mars Rover gekauft. Sie sind sind sehr kraftvoll im Test und leise im Lauf. Der Dauereinsatz wird die Haltbarkeit noch ermitteln. Die sollten das Groẞmodell gut bewegen können. Die 6 Gewinde vorn sind sehr gut, um sie sauber zu montieren. Die ausmittigen Achsen muss man bei seinen Projekten beachten.

4.05.2026

T**E

Works fine, but quite loud

Much louder than a competitor's offering that starts with a U. Works well though. I have it on a proximity sensor so it doesn't run 100% duty cycle.

7.03.2019

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34742CFA

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In stock

Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Senegal.

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