Description
Reviews
| Brand | - |
| Category | Industrial Small Parts / Connectors and Fasteners |
| Origin | - |
| Material | Aluminum Alloy 6061 |
| Surface Treatment | Black Anodized |
| Outer Diameter | 19 mm |
| Total Length | 25 mm |
| Motor Shaft Bore | 5 mm |
| Lead Screw Bore | 8 mm |
| Static Torque Capacity | 5 N.m |
| Weight | 35 grams |
| Set Screw Specification | M3 Hex Socket |
| Package Includes | 1 x Rigid Coupling, 2 x Set Screws |
Anonymous
Apr 17, 2026
Rating: 5/5
Exactly as described
Dimensions match the listing perfectly. Great rigid coupling for applications where flexibility is not needed.
Anonymous
Apr 02, 2026
Rating: 5/5
Solid build quality
Very sturdy aluminum construction. The anodizing looks nice and protects against corrosion. Highly recommend for DIY projects.
Anonymous
Mar 16, 2026
Rating: 4/5
Good value but tight fit
Works well for the price. The bore was slightly tight on my 8mm screw but smoothed out after installation. Good torque transmission.
Anonymous
Feb 14, 2026
Rating: 5/5
Perfect fit for my CNC router
This coupling fits perfectly between my NEMA 17 motor and the lead screw. The machining quality is excellent and there is no play.
Anonymous
Feb 08, 2026
Rating: 5/5
Easy to install
Installation was straightforward with the included set screws. No vibration issues since installing this on my engraver.
Q: Are the set screws included in the package?
A: Yes, two M3 set screws are included with the coupling.
Q: Is this coupling flexible or rigid?
A: This is a rigid coupling designed for precise alignment without backlash.
Q: Can this handle high RPM speeds?
A: It is rated for typical CNC engraving speeds. Ensure shafts are well-aligned to prevent vibration at high RPM.
Q: What size hex key is needed for the set screws?
A: You will need a 2mm hex key to tighten the M3 set screws.
Q: Does this fit a NEMA 17 motor shaft?
A: Yes, the 5mm bore is standard for most NEMA 17 motor shafts.
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