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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⚡ Gear up your projects with power and precision that won’t quit!

PRECISION OUTPUT - D-shaped hardened steel shaft ensures impact resistance and extends motor lifespan.
VERSATILE CONTROL - Supports positive and negative rotation with adjustable speed reduction for tailored performance.
TRUSTED RELIABILITY - Backed by 100% unconditional return guarantee—engineered for professional-grade applications.
UNMATCHED DURABILITY - All-metal gears engineered for high-temp & abrasion resistance, built to last through heavy loads.
POWER SURGE EFFICIENCY - Precision-wound pure copper rotor instantly increases motor power by 30%, delivering superior torque.

The Greartisan DC 12V 30RPM gear motor features a robust all-metal gearbox and a pure copper wire rotor that boosts power by 30%. Its hardened D-shaped output shaft ensures durability and impact resistance, while offering adjustable speed reduction and reversible rotation. Ideal for vending machines, robotics, and automation, this compact motor delivers high torque (12Kg.cm) with low noise, backed by a reliable satisfaction guarantee.

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Brand	Greartisan
Model Name	gear
Speed	30 RPM
Voltage	12 Volts
Horsepower	30 Watts
Material	Metal
Manufacturer	Greartisan
UPC	766330626944
Country of Origin	USA
Model number	Greartisan
Colour	30 RPM
Item Weight	220 g
Package Dimensions	10.2 x 6.2 x 4.9 cm; 220 g
Item model number	Greartisan
Are batteries included?	No

Greartisan Metal Dc 12V 30Rpm Gear Motor High Torque Electric Micro Speed Reduction Geared Motor Eccentric Output Shaft 37Mm Diameter Gearbox

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