Is there an adapter available to fit the 11mm input shaft of a 20:1 speed reducer nmrv030?

They are researching it here, where the motor is sold. Wish I had an answer, but at least I'm not THAT guy.

How many RPMs will the motor run before the torque drops in half?

The torque is highest at a slow 10 RPM. The torque drops linearly at the RPM increase. It starts to skip pulses because of low torque at about 200 RPM. I had to add a 100 tooth to 36 tooth xml timing pulleys to increase the torque.

Where can I get a gear that works with this 10mm shaft? Most of those I've seen are in standard, not metric units.

I've had luck finding pulleys on EBay. I'm not sure about gears but it would be worth a shot if you haven't already looked. Also you could buy something to fit on a 3/8in shaft and drill it out to 10mm.

What is the maximum power output in Watts? I’m sure it’s higher than the 3W they have listed.

Hello, The power is calculated as: P = V *I* # of coils active, or equivalently P = I^2*R* # of coils active For instance, if only one coil is active, P=4.2^2*0.9*1 = 15.87 watts If two coils are active, such as when the motor is holding a position, then the power doubles, which comes down to 31.75 watts. Hope this helps, Hector

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

STEPPERONLINE High Torque Nema 23 CNC Stepper Motor 114mm 425oz.in/3Nm CNC Mill Lathe Router

STEPPERONLINE High Torque Nema 23 CNC Stepper Motor 114mm 425oz.in/3Nm CNC Mill Lathe Router

Product ID: 349948954

Details

Brand
STEPPERONLINE
Horsepower
3 Watts
Model name
23HS45-4204S
Speed
1000 RPM
Voltage
36 Volts (DC)

📏1.8° step angle for precision

🔌4.2A rated current for robust power

⚙️3Nm (425oz.in) torque powerhouse

Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.

1279 kr

Duties & taxes included

In stock

Sold byAmazon DenmarkDelivered 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 Denmark.

Secure transaction

Description

⚡ Power your precision projects with torque that won’t quit!

COMPACT YET MIGHTY - NEMA 23 frame with a sleek 114mm length fits seamlessly into your CNC mill, lathe, or router setup without compromise.
PRECISION ENGINEERING - Experience ultra-smooth motion with a fine 1.8° step angle delivering 200 steps per revolution for flawless accuracy.
ROBUST ELECTRICAL SPECS - High 4.2A rated current and low 0.9Ω resistance ensure efficient, reliable power delivery under heavy loads.
READY FOR SERIOUS BUILDS - 4-wire bipolar design and durable alloy steel construction built to last and perform in demanding environments.
UNMATCHED TORQUE PERFORMANCE - Dominate your CNC projects with a massive 3Nm holding torque that powers through the toughest tasks.

The STEPPERONLINE High Torque Nema 23 CNC Stepper Motor delivers an impressive 3Nm (425oz.in) holding torque with a precise 1.8° step angle, powered by a robust 4.2A rated current. Its compact 57x57mm frame and 114mm length make it ideal for CNC mills, lathes, and routers requiring reliable, high-performance motion control. Built with durable alloy steel and designed for bipolar 4-wire operation, this motor is engineered for professionals demanding precision and power in their automation projects.

Specifications

ASIN	B00PNEPW4C
ASIN	B00PNEPW4C
Brand Name	STEPPERONLINE
Customer Reviews	4.8 4.8 out of 5 stars (412)
Customer reviews	4.8 4.8 out of 5 stars (412)
Date First Available	20 April 2015
Horsepower	3 Watts
Is Discontinued By Manufacturer	No
Item Dimensions W x H	5.7W x 5.7H centimeters
Item Weight	3.69 Pounds
Item model number	23HS45-4204S
Manufacturer	STEPPERONLINE
Manufacturer	STEPPERONLINE
Material Type	Alloy Steel Metal Copper Aluminum
Model	23HS45-4204S
Model Name	23HS45-4204S
Part Number	FBA_23HS45-4204S
Product Dimensions	5.7 x 11.3 x 5.7 cm; 1.67 kg
Speed	1000 RPM
UPC	701056340255 715624558850
Voltage	36 Volts (DC)

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

1 month ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.

1279 kr

Duties & taxes included

In stock

Sold byAmazon DenmarkDelivered 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 Denmark.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Farhan Q.

The delivery time was excellent, and the packaging was secure.

2 months ago

Khalid Z.

Great experience from order to delivery. Highly recommended!

1 week ago

View all Trustpilot reviews