what is the shaft length?

I`m not 100% sure but should be round 19mm

Is this a bipolar stepper?

Yes, you will a good stepper driver to run them

what maximum temperature could this stepper reach without causing damage to the stepper?

I do not know I have had them hot enough that you did not want to put your hands on them for every long and they are still running

Hi guys, i have two questions: what is the rpm of this motor and can i use that in a robot?

I mean, steppers in general don’t have a high rpm. Possibly gear it to fit your needs? You set the rpm via the stepper and controller. You can use anything for everything. How well it works, and if it’s logical, is up to you. If not, a regular dc motor and encoder would work better. Good results require hard work and trial and error. Good luck!

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Nema 23 Stepper Motor 2.8A 1.9Nm (269oz.in) 76mm Length with 8mm Shaft for CNC Mill Lathe Route

Product ID: 161394065

Details

Brand
Material
Copper
Product Dimensions
2.5"W x 3"H
Speed
1.9 rpm
Voltage
36 volts

📏76mm compact length

🔩8mm precision shaft

⚙️1.9Nm torque power

¥14785

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Description

⚡ Power your precision projects with torque that means business!

HEAVY DUTY BUILD - Solid 8mm shaft and copper windings guarantee durability and consistent performance under load.
COMPACT COMPATIBLE - Sleek 76mm length fits seamlessly into tight CNC mill, lathe, and router setups.
PRECISION POWERHOUSE - Delivers a robust 1.9Nm (269oz.in) torque for smooth, high-torque CNC operations.
ENGINEERED FOR ACCURACY - 1.8° step angle with 5% step accuracy ensures ultra-precise positioning every time.
OPTIMIZED VOLTAGE RANGE - Designed for 24-50VDC with 2.8A rated current, perfect for advanced stepper motor drivers.

The Nema 23 Stepper Motor by HobbyUnlimited is a high-torque, precision-engineered motor featuring 1.9Nm holding torque, a compact 76mm frame, and an 8mm shaft. Ideal for CNC mills, lathes, and routers, it supports 24-50VDC operation with a 2.8A current rating, delivering reliable, accurate motion control for professional-grade machining.

Specifications

ASIN	B07Y81FF3V
Best Sellers Rank	#125,894 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #37 in 3D Printer Motors #167 in Electrical Motor Controls
Brand Name	HobbyUnlimited
Customer Reviews	4.7 4.7 out of 5 stars (102)
Item Dimensions W x H	2.5"W x 3"H
Item Weight	1.03 kg
Manufacturer	HobbyUnlimited
Material Type	Copper
Speed	1.9 rpm
Voltage	36 volts

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¥14785

Duties & taxes included

In stock

Sold byAmazon JapanDelivered 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 Japan.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

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