A
Anonymous
Apr 12, 2026
Rating: 4/5
Good value for money
Works well but instructions could be more detailed. The coupling itself is top notch.
Description
This is a flexible shaft coupling designed to connect servo motors to driven equipment while compensating for misalignment. Constructed from 45# steel or stainless steel, it utilizes a single or double diaphragm design to transmit torque with high precision and zero backlash. The assembly incorporates a shrink disc mechanism for secure, keyless mounting onto shafts without the need for set screws. Regularly inspect the diaphragm elements for signs of fatigue or deformation to ensure optimal performance and prevent mechanical failure.
Reviews
Attributes
| Brand | - |
| Category | Industrial Small Parts / Connectors and Fasteners |
| Origin | - |
| Material | 45# Carbon Steel |
| Surface Treatment | Black Oxide Coating |
| Coupling Type | Single-Disc Flexible |
| Rated Torque | 50 N·m |
| Maximum Speed | 10,000 RPM |
| Bore Diameter Range | 5mm to 20mm |
| Operating Temperature | -20°C to 80°C |
| Backlash Level | Zero Backlash |
| Net Weight | 150 grams |
| Country of Origin | China |
5 reviews
A
Anonymous
Mar 25, 2026
Rating: 5/5
Solid Build Quality
The steel feels very durable and the black oxide finish looks professional. Highly recommend.
A
Anonymous
Jan 29, 2026
Rating: 5/5
High Speed Performance
Running at 8000 RPM with no issues. Very stable connection for my application.
A
Anonymous
Jan 28, 2026
Rating: 5/5
Excellent Precision
Used this for a CNC router build and the fit was perfect. No vibration noticed at high speeds.
A
Anonymous
Jan 19, 2026
Rating: 5/5
Perfect Fit
Matched my servo motor shaft exactly. Zero backlash as advertised.
5 FAQ
Q: Can I get a 10mm bore size specifically?
A: Yes, please select the 10mm option from the variant menu or contact us for custom sizing.
Q: What size set screws are included in the package?
A: The package includes M3 set screws suitable for securing the coupling to the shaft.
Q: What is the maximum angular misalignment tolerance?
A: The coupling can accommodate up to 1 degree of angular misalignment safely.
Q: Is this compatible with NEMA 23 stepper motors?
A: Yes, it is compatible provided the shaft diameter matches the bore size selected.
Q: Does this coupling require regular lubrication?
A: No, the single-disc design is maintenance-free and does not require lubrication.
![[M2-M20] Stainless Steel Spring Washer](https://www.gosteppe.com/cache/medium/product/16306/legacy-main-ef3d2dba3bde669d48e6cca2.webp)
![Xiankan Yunshu [Danran] Ceramic Brush Washer - Hand-Painted Elegant Lily Design under Glaze for Calligraphy Supplies](https://www.gosteppe.com/cache/small/product/269142/legacy-main-f8acbab3a83eee11ff108718.webp)
![[Single Pack] Handwoven Bird Nest Drop Net Cotton Rope Crochet Fruit Mesh Bag Storage Organizer](https://www.gosteppe.com/cache/small/product/269122/legacy-main-636b79526345e5fcd94b7ff1.webp)
