Attributes

Brand	-
Category	Standard Parts, Components & Industrial Consumables / Couplings
Origin	-
Material	High-Grade Aluminum Alloy
Coupling Type	Single/Double Diaphragm
Application	Lead Screw, Lathe Motor, CNC Machinery
Connection Style	Step and Keyway
Flexibility	Elastic Compensation for Misalignment
Torque Capacity	High Precision Transmission
Surface Finish	Anodized Black
Operating Temperature	-20°C to 80°C
Maintenance	Maintenance-Free Operation
Compatibility	Suitable for Servo and Stepper Motors

6 reviews

Anonymous

Mar 29, 2026

Rating: 5/5

Reliable for industrial use

We bought several for our workshop lathes. The elastic property absorbs shocks well, protecting the motor bearings. Highly recommended.

Anonymous

Mar 27, 2026

Rating: 4/5

Solid build quality

The anodized finish looks professional and resists oil well. It was slightly tighter than expected on the shaft, but a little polishing fixed it.

Anonymous

Mar 25, 2026

Rating: 5/5

Excellent precision component

Used this for a high-speed application. No wobble, no heat buildup after hours of running. The step design makes mounting very secure.

Anonymous

Mar 17, 2026

Rating: 5/5

Solved my vibration issues

My old rigid coupling was causing too much noise. This diaphragm coupling is quiet and smooth. Great value for the price.

Anonymous

Mar 06, 2026

Rating: 5/5

Perfect fit for my CNC lathe

The keyway alignment was spot on. Installed it on my lead screw setup and the vibration is completely gone. Very sturdy aluminum construction.

Anonymous

Mar 04, 2026

Rating: 4/5

Good quality, fast shipping

Works well for my motor coupling. The double diaphragm design handles the slight misalignment perfectly. Only wish it came with installation instructions.

5 FAQ

Q: Is the keyway standard sized?

A: Yes, the keyway follows standard industrial dimensions corresponding to the shaft diameter selected. This ensures compatibility with off-the-shelf motors and screws.

Q: Does this coupling come in different bore sizes?

A: Yes, we offer various bore sizes to match different motor shafts and lead screws. Please check the specific variant options or contact us for custom sizing.

Q: Do I need special tools to install this?

A: No special tools are required. Standard hex keys and a torque wrench for tightening the set screws are sufficient for proper installation.

Q: What is the maximum angular misalignment this can compensate for?

A: The single diaphragm version typically compensates for up to 1 degree, while the double diaphragm version can handle up to 2 degrees of angular misalignment.

Q: Can this handle high RPM applications?

A: Absolutely. The aluminum alloy diaphragm design is balanced for high-speed rotation, making it suitable for most servo and stepper motor applications up to standard industrial limits.

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