A
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.
Description
D15L20 Aluminum Alloy Elastic Coupling Winding Lead Screw Motor Coupling Encoder Bore 2/3/4/5/6*
Reviews
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
A
Anonymous
Mar 15, 2026
Rating: 5/5
Excellent precision part
Used this for a custom CNC build. No vibration issues at high speeds.
A
Anonymous
Mar 10, 2026
Rating: 5/5
Reliable coupling
Bought the 5mm bore version. Matches specs exactly. Great value for the price.
A
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.
A
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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