Attributes

Brand	-
Category	Industrial Small Parts / Connectors and Fasteners
Origin	-
Material	Aluminum Alloy
Outer Diameter	15 mm
Total Length	20 mm
Available Bore Sizes	2/3/4/5/6 mm
Static Torque Capacity	30 N·cm
Maximum Speed	10,000 rpm
Surface Treatment	Black Anodized
Coupling Style	Flexible Spiral Beam
Unit Weight	8 grams
Typical Use	CNC, 3D Printer, Robotics

5 reviews

Anonymous

Apr 09, 2026

Rating: 3/5

Works but tight fit

The 4mm bore was very tight on my shaft. Had to sand slightly. Otherwise okay.

Anonymous

Mar 15, 2026

Rating: 5/5

Excellent precision part

Used this for a custom CNC build. No vibration issues at high speeds.

Anonymous

Mar 10, 2026

Rating: 5/5

Reliable coupling

Bought the 5mm bore version. Matches specs exactly. Great value for the price.

Anonymous

Feb 17, 2026

Rating: 5/5

Perfect for my 3D Printer

Fits perfectly on the Z-axis motor. Very rigid yet flexible enough to handle misalignment.

Anonymous

Feb 16, 2026

Rating: 4/5

Good quality component

Solid build quality. Took a bit of effort to tighten the set screws but holds well.

5 FAQ

Q: Do you ship internationally?

A: Yes, we ship worldwide via standard courier services.

Q: Is this suitable for high torque loads?

A: It is designed for light to moderate torque typical in positioning systems.

Q: What is the tolerance for the bore?

A: The bore tolerance is typically H7 for a secure fit.

Q: Does this come with set screws?

A: Yes, two set screws are included per coupling.

Q: Can I use this for a NEMA 17 motor?

A: Yes, it is commonly used with NEMA 17 motors having 5mm shafts.

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