Attributes

Brand	-
Category	Standard Parts, Components & Industrial Consumables / Couplings
Origin	-
Material	High-Grade Aluminum Alloy
Surface Treatment	Black Anodized Finish
Coupling Type	Rigid Flange Coupling
Shaft Compatibility	Smooth Guide Shafts (6mm - 20mm)
Hardness Rating	HRC 45-50
Origin	Taiwan (C-KINGNM Series)
Precision Grade	High-Precision Machined
Mounting Style	Flange Mount with Set Screws
Application	Motor to Shaft Support Connection
Package Contents	1x Coupling, 4x Mounting Screws, 2x Set Screws

6 reviews

Anonymous

Mar 30, 2026

Rating: 5/5

Perfect fit for my CNC upgrade

The machining quality on this C-KINGNM coupling is outstanding. It fits my 12mm smooth shaft perfectly with zero runout. The black anodizing looks professional and seems durable.

Anonymous

Mar 28, 2026

Rating: 5/5

High precision as advertised

I needed a high-hardness coupling for a high-torque application, and this delivers. No flex under load and the flange alignment is spot on. Highly recommended for serious builds.

Anonymous

Mar 26, 2026

Rating: 4/5

Good product, fast shipping

Works exactly as described for connecting my stepper motor to the lead screw. The finish is nice, though I wish it came with a hex key included. Otherwise, no complaints.

Anonymous

Mar 19, 2026

Rating: 5/5

Sturdy and reliable

Replaced a plastic coupling with this metal one and the difference in print quality on my machine is night and day. Zero backlash and very smooth operation.

Anonymous

Mar 14, 2026

Rating: 5/5

Excellent value for Taiwanese quality

You can tell this is genuine Taiwan manufacturing. The tolerances are much tighter than generic alternatives I've tried. Smooth installation and great performance.

Anonymous

Mar 06, 2026

Rating: 4/5

Solid construction, slightly tight screws

Very rigid and well-made. The only minor issue was that the set screws were a bit difficult to tighten initially, but once secured, the connection is rock solid. Great for motor support.

5 FAQ

Q: Does this coupling work with a 10mm smooth shaft?

A: Yes, this model supports smooth shafts ranging from 6mm to 20mm. Please ensure you select the correct bore size variant when ordering.

Q: Can I return this if the bore size is wrong?

A: Absolutely. As long as the item is unused and in original packaging, we accept returns or exchanges for incorrect sizing within 30 days of purchase.

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

A: While specific torque values depend on the shaft diameter and mounting method, this high-hardness alloy is designed for medium to high-torque motor applications typical in CNC and automation setups.

Q: Are the mounting holes standard metric spacing?

A: Yes, the flange mounting holes follow standard metric spacing conventions compatible with most NEMA motors and linear rail supports.

Q: Is this suitable for outdoor use?

A: The black anodized finish provides good corrosion resistance, but for prolonged outdoor exposure, we recommend applying an additional protective coating or housing.

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