Attributes

Brand	-
Category	Standard Parts, Components & Industrial Consumables / Couplings
Origin	-
Material	High-Grade Aluminum Alloy
Coupling Type	Star Jaw (Spider) Coupling
Insert Material	Polyurethane Elastic Spider
Torque Capacity	High Torque Transmission
Misalignment Compensation	Angular, Parallel, and Axial
Surface Finish	Black Anodized
Application	Servo Motors and Lead Screws
Operating Temperature	-30°C to +80°C
Backlash	Zero Backlash Design
Maintenance	Maintenance Free Operation

6 reviews

Anonymous

Mar 24, 2026

Rating: 5/5

Great value for money

Compared to brand name equivalents, this offers the same performance at a fraction of the cost. No issues with balance or runout at high RPMs.

Anonymous

Mar 23, 2026

Rating: 4/5

Good quality, fast shipping

The build quality is excellent for the price. I used it to connect a leadscrew to a stepper motor. It runs smoothly and quietly. Took off one star because the set screws could be slightly longer.

Anonymous

Mar 14, 2026

Rating: 5/5

Exactly as described

Needed a replacement for a worn-out coupling on my lathe encoder. This unit matched the specifications perfectly and restored precision to my machine immediately.

Anonymous

Mar 11, 2026

Rating: 4/5

Solid mechanical part

Very sturdy coupling. The elastic spider element absorbs shocks well during rapid direction changes. Installation was straightforward with standard hex keys.

Anonymous

Mar 09, 2026

Rating: 5/5

Perfect for my CNC upgrade

This coupling fits perfectly on my NEMA 23 servo motor setup. The aluminum construction feels very solid and the spider insert provides just enough flexibility to handle minor misalignments without vibration.

Anonymous

Mar 06, 2026

Rating: 5/5

Robust and reliable

I have installed these on three different axes of my 3D printer conversion. They handle high torque loads without slipping. The anodized finish also looks professional.

5 FAQ

Q: What are the available bore sizes for this coupling?

A: This specific listing is for a fixed bore size, but we offer custom boring services. Please contact us with your shaft diameter requirements before ordering.

Q: Does this come with set screws included?

A: Yes, the coupling comes pre-installed with high-strength steel set screws and includes an Allen key for installation.

Q: Can this coupling be used in outdoor environments?

A: While the aluminum alloy is anodized for corrosion resistance, prolonged exposure to rain or harsh chemicals is not recommended. It is best suited for indoor industrial or hobbyist applications.

Q: What is the maximum RPM rating for this model?

A: For the standard aluminum star coupling, the maximum safe operating speed is typically around 4000 RPM, depending on the specific bore size and balance grade.

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

A: Yes, the polyurethane spider insert is designed to be replaceable. You can purchase spare inserts separately in our store under the 'Coupling Parts' category.

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