What is the maximum speed output of the gearbox?

The maximum speed output is about 25RPM.

Is there a torque curve available for this motor?

Stepper motors definitely have torque curves. They are not constant torque. Planetary drives do not lock movement, they can be backdriven. Most likely the best torque performance will be had from this motor between 0 to 300 RPM. Other 2.8A motors I have (with published torque curves) produce about 100 oz. in. at 600 RPM.

What types of voltage supplies would you apply to this motor? For example, a car battery.

24Vdc is what i would recommend to keep the current down.

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⚙️ Power your precision — dominate your DIY CNC game!

BUILT TO LAST - Robust 1.7kg build with premium materials designed for long-lasting, professional-grade CNC applications.
COMPACT YET MIGHTY - NEMA 23 frame with a sleek 56mm motor length fits perfectly in tight DIY setups without sacrificing power.
PLUG PLAY SIMPLICITY - 4-wire bipolar design (Black, Green, Blue, Red) for easy integration and reliable control.
POWERHOUSE PERFORMANCE - 40Nm holding torque ensures your mill, lathe, or router never misses a beat under heavy loads.
UNMATCHED PRECISION DRIVE - 47:1 planetary gearbox delivers ultra-smooth, high-torque motion for your CNC projects.

The STEPPERONLINE 47:1 Planetary Gearbox NEMA 23 Stepper Motor combines a high-precision 47:1 planetary gearbox with a robust 40Nm holding torque and a 2.8A rated current. Its compact 60x60mm frame and 56mm motor length make it ideal for demanding DIY CNC mill, lathe, and router projects, delivering reliable, powerful, and smooth motion control in a durable 1.7kg package.

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Brand	STEPPERONLINE
Model Name	gear
Voltage	48 Volts
Material	lead
Item Weight	1.7 Kilograms
Shaft Diameter	12 Millimeters
Manufacturer	OSM Technology Co.,Ltd.
UPC	701056591893
Part Number	23HS22-2804S-PG47
Item Weight	3.74 pounds
Package Dimensions	7.95 x 4.37 x 3.86 inches
Item model number	23HS22-2804S-PG47
Is Discontinued By Manufacturer	No
Size	Nema23
Item Package Quantity	1
Batteries Included?	No
Batteries Required?	No

STEPPERONLINE 47:1 Planetary Gearbox Nema 23 Stepper Motor 2.8A for DIY CNC Mill Lathe Router

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