Attributes

Brand	-
Category	Standard Parts, Components & Industrial Consumables / Couplings
Origin	-
Material	High-Grade Aluminum Alloy
Coupling Type	Spider Jaw / Star Flexible
Shaft Bore Range	5mm to 20mm
Elastic Element	Polyurethane Spider Insert
Max Torque Capacity	15 Nm
Max Rotational Speed	4000 RPM
Operating Temperature	-30°C to +80°C
Surface Finish	Black Anodized
Misalignment Compensation	Angular, Parallel, and Axial
Application	CNC Lathe, Servo Motors, Ball Screws

6 reviews

Anonymous

Mar 19, 2026

Rating: 5/5

Smooth operation

Noticed a significant reduction in noise after installing this elastic star joint. The flexibility compensates well for minor misalignments in my ball screw setup. Highly recommended for DIY CNC builders.

Anonymous

Mar 18, 2026

Rating: 5/5

Reliable industrial component

We use these in several prototype machines. The anodized finish holds up well against coolants, and the polyurethane spider shows no signs of wear after months of continuous operation.

Anonymous

Mar 14, 2026

Rating: 5/5

Perfect fit for my CNC retrofit

This coupling replaced a worn-out part on my lathe servo motor. The aluminum construction is solid, and the spider insert provides excellent vibration damping. Installation was straightforward with the set screws.

Anonymous

Mar 14, 2026

Rating: 4/5

Solid value

Does exactly what it is supposed to do. Connects the motor to the lead screw securely. The price point is very competitive compared to local suppliers.

Anonymous

Mar 07, 2026

Rating: 4/5

Good quality, accurate sizing

The bore sizes were exactly as described. It handles the torque of my NEMA 23 motor without any slip. Only giving 4 stars because the included hex key was a bit flimsy, but the product itself is great.

Anonymous

Mar 07, 2026

Rating: 5/5

Fast shipping and great product

Arrived quickly and well-packaged. The coupling feels robust and the machining precision is evident. No runout issues detected during testing.

5 FAQ

Q: What is the maximum angular misalignment this coupling can handle?

A: This spider coupling can typically accommodate an angular misalignment of up to 1 degree, depending on the specific bore size and load conditions.

Q: Is the material resistant to common cutting oils?

A: Yes, the high-grade aluminum alloy with black anodizing offers good resistance to most standard cutting oils and coolants used in CNC environments.

Q: Can I use this with a stepper motor that has a 6.35mm shaft?

A: Absolutely. This model supports bore sizes ranging from 5mm to 20mm, so a 6.35mm (1/4 inch) shaft fits perfectly within the specified range.

Q: How do I remove the spider insert if I need to replace it later?

A: You can gently pry the spider insert out using a flat-head screwdriver or by tapping the hub lightly. Replacement spiders are available separately if needed in the future.

Q: Does this come with the orange polyurethane spider insert pre-installed?

A: Yes, the coupling comes fully assembled with the elastic polyurethane spider insert already in place, ready for immediate installation.

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