Attributes

Brand	-
Category	Standard Parts, Components & Industrial Consumables / Couplings
Origin	-
Material	High-Grade Aluminum Alloy
Shaft Diameter Range	20mm - 40mm
Coupling Type	Rigid Clamping
Application	Engraving Machine Leadscrew
Torque Capacity	High-Torque Transmission
Surface Finish	Anodized Black
Mounting Method	Set Screw Clamping
Precision Grade	CNC Machined Tolerance
Weight	185g
Package Includes	1x Coupling, 4x Set Screws

6 reviews

Anonymous

Mar 27, 2026

Rating: 5/5

Reliable component

Been running this for three months without any issues. Highly recommended for hobbyist engraving setups.

Anonymous

Mar 20, 2026

Rating: 4/5

Works as advertised

Fits the 30mm shaft snugly. It is truly rigid, so ensure your motor and leadscrew alignment is perfect before tightening.

Anonymous

Mar 18, 2026

Rating: 5/5

Excellent torque transmission

No slippage under heavy load. My engraving depth consistency has improved significantly since installing this rigid coupling.

Anonymous

Mar 18, 2026

Rating: 5/5

Perfect fit for my CNC upgrade

This coupling replaced a worn-out part on my engraving machine perfectly. The clamping mechanism is very secure and there is zero backlash now.

Anonymous

Mar 09, 2026

Rating: 4/5

Solid build quality

The aluminum feels robust and the machining is precise. Installation was straightforward, though I recommend using thread locker on the screws.

Anonymous

Mar 02, 2026

Rating: 5/5

Great value for money

Compared to other brands, this offers the same performance at a better price. The anodized finish looks professional too.

5 FAQ

Q: Do I need special tools to install this?

A: No special tools are required; a standard hex key (Allen wrench) sized for the set screws is sufficient for installation.

Q: What is the maximum RPM rating for this coupling?

A: While specific RPM depends on your balance and alignment, this aluminum alloy coupling is generally rated for up to 4000 RPM in standard engraving applications.

Q: Does this come with the set screws needed for installation?

A: Yes, the package includes four high-strength set screws suitable for immediate installation.

Q: Is this flexible or completely rigid?

A: This is a rigid clamping coupling designed to provide a solid connection with no flexibility, ideal for precision engraving applications.

Q: Can this be used for a 25mm shaft?

A: Absolutely, this coupling supports shaft diameters ranging from 20mm to 40mm, so 25mm is well within the specification.

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