A
Anonymous
Mar 09, 2026
Rating: 4/5
Good Value
Works well for my CNC router. Just ensure you have precise alignment as it is a rigid coupling.
Description
This rigid coupling connects motor and drive shafts for engraving machines requiring precise alignment. Constructed from 45# steel, the one-piece split hub design utilizes a clamping mechanism to transmit high torque without backlash. Ensure shaft surfaces are clean and dry before tightening the clamping screws to maintain optimal performance.
Reviews
Attributes
| Brand | - |
| Category | Industrial Small Parts / Connectors and Fasteners |
| Origin | - |
| Material | 45# Carbon Steel |
| Surface Finish | Black Oxide Coating |
| Coupling Type | Rigid Clamping |
| Structure | One-Piece Split-Shell |
| Max Torque Capacity | 50 N·m |
| Outer Diameter | 50 mm |
| Overall Length | 60 mm |
| Bore Diameter Range | 10mm - 20mm (Selectable) |
| Item Weight | 350 grams |
| Package Contents | 1 x Coupling, Screws Included |
5 reviews
A
Anonymous
Feb 22, 2026
Rating: 5/5
Excellent Rigidity
Used this on my laser engraver setup. Zero backlash noticed during operation. Very satisfied with the build quality.
A
Anonymous
Feb 19, 2026
Rating: 5/5
Robust Construction
Handling high torque without any issues so far. The black oxide finish helps with corrosion resistance.
A
Anonymous
Feb 14, 2026
Rating: 5/5
High Quality Steel
Feels very solid. Machining marks are clean and the clamping mechanism is strong. Great for precision work.
A
Anonymous
Feb 05, 2026
Rating: 5/5
Perfect Fit
Matched my motor shaft perfectly. Easy to install with the provided screws. No vibration issues.
5 FAQ
Q: Are the clamping screws included?
A: Yes, all necessary hardware is included in the package.
Q: What is the maximum RPM rating?
A: It is balanced for up to 4000 RPM depending on the specific bore size selected.
Q: Can I get a keyway added?
A: Custom keyways are available upon request before shipping. Please contact us.
Q: Is this suitable for stepper motors?
A: Yes, it is commonly used for NEMA stepper motor connections in engraving applications.
Q: Does this allow for angular misalignment?
A: No, this is a rigid coupling requiring precise alignment between shafts.
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