Attributes

Brand	-
Category	Standard Parts, Components & Industrial Consumables / Couplings
Origin	-
Material	High-Grade Aluminum Alloy
Coupling Type	Diaphragm Elastic Spider
Configuration	Single/Double Diaphragm
Application	Servo Motor & Stepper Motor
Keyway Feature	Included with Keyway Slot
Torque Capacity	High Torsional Rigidity
Misalignment Compensation	Angular, Parallel, and Axial
Surface Finish	Anodized for Corrosion Resistance
Operating Temperature	-20°C to +80°C
Compatibility	Standard NEMA Motor Shafts

6 reviews

Anonymous

Mar 23, 2026

Rating: 5/5

Excellent vibration damping

The elastic spider element does a fantastic job of dampening vibrations. My machine runs much smoother now compared to the old rigid coupling.

Anonymous

Mar 21, 2026

Rating: 5/5

Reliable industrial component

We use these in our small assembly line prototypes. They are reliable, easy to install, and the price point is very competitive for aluminum alloy.

Anonymous

Mar 17, 2026

Rating: 5/5

Perfect fit for my CNC upgrade

The build quality is exceptional. The aluminum feels solid and the keyway fits perfectly on my servo motor shaft. Zero backlash observed during testing.

Anonymous

Mar 15, 2026

Rating: 4/5

Great value, minor finish issue

Works exactly as described for my 3D printer extruder. There was a tiny scratch on the outer rim, but it doesn't affect performance at all.

Anonymous

Mar 12, 2026

Rating: 4/5

Good product, fast shipping

The coupling arrived well-packaged. Dimensions were accurate according to the spec sheet. Would recommend checking your shaft diameter carefully before ordering.

Anonymous

Mar 03, 2026

Rating: 5/5

Precise and durable

Installed this on a robotic arm joint. The precision is top-notch and it handles the repeated start-stop cycles without any wear signs so far.

5 FAQ

Q: Is the spider element replaceable if it wears out?

A: Yes, the elastic spider insert is designed to be replaceable. You can purchase spare spiders separately without replacing the entire metal hub.

Q: What is the maximum RPM this coupler can handle safely?

A: For standard sizes, this aluminum alloy diaphragm coupling is rated up to 4000 RPM. Please consult the specific size chart for higher speed applications.

Q: What tolerance class are the bore holes machined to?

A: The bore holes are machined to H7 tolerance class, ensuring a precise fit for standard motor shafts.

Q: Can I use this outdoors in a humid environment?

A: The anodized finish provides good corrosion resistance, but for prolonged outdoor exposure in high humidity, we recommend additional protective coating or regular maintenance.

Q: Does this coupling come with the keys for the keyway?

A: Yes, the package includes the necessary keys matched to the keyway slot size specified in your order.

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