Attributes

Brand	-
Category	Standard Parts, Components & Industrial Consumables / Couplings
Origin	-
Material	High-Grade Aluminum Alloy
Coupling Type	Three-Section Diaphragm
Compatibility	Stepper and Servo Motors
Torque Capacity	High Torque Transmission
Flexibility	Flexible Joint Design
Precision	Zero Backlash Performance
Surface Finish	Anodized Black Coating
Application	CNC Machines and Robotics
Durability	Wear-Resistant Construction
Manufacturer	YWA Direct Supply

6 reviews

Anonymous

Mar 25, 2026

Rating: 4/5

Great value, solid build

The aluminum alloy feels very sturdy. I used it for a small robotic arm project. It handles the torque well without any flex issues. Only giving 4 stars because the set screws could be slightly longer, but overall a great product.

Anonymous

Mar 24, 2026

Rating: 4/5

Good quality control

The machining on the bore and keyway is very clean. No burrs to clean up before installation. It's a bit pricier than generic options, but the quality difference is obvious.

Anonymous

Mar 13, 2026

Rating: 5/5

Solved my vibration problem

My previous coupling was causing resonance at certain speeds. Switching to this flexible diaphragm joint completely eliminated the noise and vibration. Very happy with the performance.

Anonymous

Mar 12, 2026

Rating: 5/5

Reliable and precise

Used this to connect a NEMA 23 motor to a lead screw. The rigidity is impressive, and it maintains position accuracy beautifully. Shipping from YWA was fast too.

Anonymous

Mar 11, 2026

Rating: 5/5

Excellent for servo applications

I needed a coupling that could handle high speeds and slight misalignment. This three-section design works perfectly. No vibration issues even at higher RPMs. Will buy again for future projects.

Anonymous

Mar 04, 2026

Rating: 5/5

Perfect fit for my CNC router

This diaphragm coupling replaced an old bellows type on my stepper motor setup. The installation was straightforward, and the zero backlash is noticeable in the finish quality of my cuts. Highly recommended for precision work.

5 FAQ

Q: What is the maximum allowable parallel misalignment for this model?

A: For standard sizes, the maximum parallel misalignment is typically around 0.2mm, but please check the specific datasheet for your chosen bore size for exact tolerances.

Q: Is custom boring available if my shaft sizes are non-standard?

A: We primarily stock standard metric and imperial bore sizes. For custom bores, please contact our sales team directly to discuss minimum order quantities and lead times.

Q: Can this be used in an environment with occasional oil exposure?

A: Yes, the anodized aluminum alloy provides good resistance to oils and coolants commonly found in machine shop environments.

Q: Does this coupling come with set screws included?

A: Yes, each coupling comes with a full set of high-strength socket head cap screws for secure mounting.

Q: How does the three-section design compare to a single diaphragm?

A: The three-section design offers greater flexibility and better compensation for angular and parallel misalignment while maintaining high torsional stiffness compared to single diaphragm models.

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