uxcell 3mm to 3mm Shaft Coupling 25mm Length 18mm Diameter Stepper Motor Coupler Aluminum Alloy Joint Connector for 3D Printer CNC Machine DIY Encoder

$ 7.49

Score By Feature

Based on 75 ratings

Customer service

9.13

Value for money

8.94

Giftable

9.05

Packaging

8.98

OveReview Final Score

How Our Score Is Calculated

Product Description

By entering your model number, you can make sure that this fits.

Usage of the shaft: 3mm to 3mm / 0. 12 to 0. 12 inch

Aluminum alloy; Dimensions: 25x18mm/ 0. 98x0. (L*D) 71 inch

Set screws (Coiling Clamping) are one of the features of this product. The main color is silver tone.

The motor and driving components are less stressed when the coupling shaft is flexible.

Shaft couplers are commonly used in the encoding of small CNC machines and the Z shaft coupling of 3D printers, which makes debugging easier.

Questions & Answers

Is there a limit to the number of revolutions these can make? I'm making a custom automated grinder and will need these to connect the motors to the grinding wheels. ?

The flex in these couplings is quite high. They're a soft alloy, so they're not a good fit for your project!

Is it compatible with a 6mm threaded rod and a 6mm motor shaft?

Yes, as long as the threads' outside diameter is 6mm. Please keep in mind that two grains on the coupler, once tightened on the threaded shaft, will exert a significant amount of pressure on the threads, potentially damaging them.

Is there a limit to the number of revolutions these can make? I'm making a custom automated grinder and will need these to connect the motors to the grinding wheels. ?

I'm not sure, but I wouldn't use them for high-rpm applications.

Is there a hex head spanner included?

No, you must use a hex spanner of your own.

Selected User Reviews For uxcell 3mm to 3mm Shaft Coupling 25mm Length 18mm Diameter Stepper Motor Coupler Aluminum Alloy Joint Connector for 3D Printer CNC Machine DIY Encoder

I purchased the 10x10mm size to connect a 425oz-capacity water bottle

3/5

in the stairwell I purchased the 10x10mm size to connect a 425oz-capacity water bottle. After an hour of use, the stepper motor in my CNC machine failed. It might work for low-torque motors, but be aware that it isn't very powerful. It's only 18mm in diameter, compared to the 20mm diameter of the original. Most cnc couplings have a diameter of 25mm. This is more suited to a 3D printer than a CNC machine.

Isla Goodwin

| Sep 11, 2021

Well- made to order and extremely adaptable It appears to be in good working order

5/5

I've attached a photo of the coupler being bent because it's unclear from the description how flexible these couplers are.

Khaleesi Bennet

| Dec 10, 2021

The video appears to be of good quality

4/5

With one exception, this works very well. It is swaying excessively. It's possible that this is my application. Everything else appears to be of acceptable quality.

Pedro Bonner

| Jun 26, 2021

The cheapest price and the quickest delivery

5/5

cheapest price and quickest delivery.

Aila Kelly

| Sep 19, 2021

It Works

5/5

My lulzbot mini was able to be restarted as a result of this. The original part was sheared because the axis was binding; I've already run the printer for 5 hours and it's working perfectly.