Attributes

Brand	-
Category	Standard Parts, Components & Industrial Consumables / Couplings
Origin	-
Material	High-Grade Aluminum Alloy
Coupling Type	Spider Jaw (Star) Coupling
Application	CNC Machine Tools & Lead Screws
Shaft Compatibility	Motor to Ball Screw Connection
Flex Element	Polyurethane Spider Insert
Torque Capacity	High Torsional Stiffness
Misalignment Compensation	Angular, Parallel, and Axial
Surface Finish	Anodized Black
Operating Temperature	-30°C to +80°C
Brand	Xingda CFC

6 reviews

Anonymous

Mar 29, 2026

Rating: 5/5

Reliable industrial component

We use these in our workshop for various motor connectors. They are durable and handle the torque requirements of our stepper motors perfectly. The star coupling design effectively dampens shock loads.

Anonymous

Mar 27, 2026

Rating: 4/5

Good quality, accurate sizing

Ordered this for a lead screw transmission setup. The bore sizes were exactly as specified. It runs smoothly at high RPMs. Only giving 4 stars because the shipping took a bit longer than expected, but the product itself is excellent.

Anonymous

Mar 18, 2026

Rating: 5/5

Great value for money

Compared to other brands, this Xingda coupling offers superior build quality at a reasonable price. The anodized finish looks professional and seems resistant to corrosion. Highly recommended for DIY CNC builds.

Anonymous

Mar 16, 2026

Rating: 4/5

Solid performance

Installed on a lathe conversion project. It transmits power efficiently with minimal backlash. The set screws hold tight even after weeks of continuous operation. A very reliable mechanical link.

Anonymous

Mar 03, 2026

Rating: 5/5

Perfect fit for my CNC retrofit

This coupling replaced an old worn-out part on my milling machine. The aluminum construction feels solid, and the spider insert provides just enough flexibility to handle minor misalignments without vibration. Installation was straightforward.

Anonymous

Mar 01, 2026

Rating: 5/5

Exceeded expectations

I was worried about compatibility with my specific motor shaft, but the tolerances are spot on. The coupling absorbs vibrations well, resulting in smoother surface finishes on my machined parts.

5 FAQ

Q: How do I properly tighten the set screws to prevent slipping?

A: Clean the shaft and bore thoroughly, apply a drop of thread locker to the set screws, and tighten them alternately to the specified torque using a hex key. Ensure one screw rests on the flat of the shaft if present.

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

A: Yes, the unit typically comes assembled with the orange or black polyurethane spider insert already in place, ready for installation.

Q: Can this be used for high-temperature environments near ovens?

A: While the aluminum body handles heat well, the polyurethane spider insert has a temperature limit of approximately 80°C. For higher temperatures, a different elastomer material would be required.

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

A: For standard sizes in this series, the maximum safe operating speed is generally around 4000-5000 RPM, depending on the specific bore diameter and balance grade.

Q: Are custom bore sizes available if my shafts are non-standard?

A: Standard listings feature common metric and imperial sizes. For non-standard bores, please contact our sales team directly to discuss custom machining options.

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