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Home / Couplings / Diaphragm Step Coupling, Aluminum Alloy Elastic Single/Double Diaphragm Flange Coupling for Servo Motors

Attributes

Brand -
Category Standard Parts, Components & Industrial Consumables / Couplings
Origin -
Material High-Strength Aluminum Alloy
Coupling Type Single/Double Diaphragm
Application Servo Motors and Stepper Motors
Torque Capacity High Torsional Rigidity
Misalignment Compensation Angular, Parallel, and Axial
Surface Treatment Black Anodized Finish
Operating Temperature -20°C to +80°C
Backlash Zero Backlash Design
Mounting Style Clamping Screw Type
Package Contents 1 x Coupling, Mounting Screws, Manual

6 reviews

A

Anonymous

Mar 28, 2026

Rating: 4/5

Great value, fast shipping

Works exactly as described. The double diaphragm design handles the misalignment in my setup very well. Only giving 4 stars because the instructions were a bit sparse, but installation was intuitive.

A

Anonymous

Mar 21, 2026

Rating: 5/5

Zero backlash confirmed

I tested this extensively on a high-precision application. There is absolutely no noticeable backlash, which is critical for my positioning system. Highly recommended for servo applications.

A

Anonymous

Mar 14, 2026

Rating: 5/5

Exceeded expectations

For the price, you cannot beat the quality. It rivals much more expensive brands I have used in the past. The elastic diaphragm absorbs shocks effectively.

A

Anonymous

Mar 14, 2026

Rating: 5/5

Perfect for my CNC upgrade

The build quality is exceptional. The aluminum feels solid and the machining is precise. Installed it on my servo motor without any issues, and the vibration has decreased significantly.

A

Anonymous

Mar 10, 2026

Rating: 5/5

Robust and reliable

We use these in our automated assembly line. They have been running 24/7 for three months with no signs of wear. The clamping mechanism holds tight under high torque.

A

Anonymous

Mar 01, 2026

Rating: 4/5

Good fitment

The bore sizes matched my shafts perfectly. The anodized finish looks professional. It took a little effort to align initially, but once set, it runs smoothly.

5 FAQ

Q: Can this be used in a vacuum environment?

A: Standard anodized aluminum is generally not suitable for high-vacuum environments due to outgassing. Please contact us directly if you require a specialized version for vacuum applications.

Q: What is the maximum RPM this coupling can handle?

A: Depending on the specific model size, these couplings can typically handle speeds up to 10,000 RPM. Please check the detailed specification sheet for the exact model you are interested in.

Q: Does this coupling come in different bore sizes?

A: Yes, we offer various bore size combinations. Please select your specific inner diameter requirements from the dropdown menu when ordering.

Q: Is the single diaphragm version better than the double?

A: The single diaphragm allows for slightly more angular misalignment, while the double diaphragm offers better parallel misalignment compensation and higher torsional stiffness. Choose based on your specific alignment needs.

Q: Are the mounting screws included in the package?

A: Yes, all necessary clamping screws and an Allen key for installation are included in the box.

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