Attributes

Brand	-
Category	Standard Parts, Components & Industrial Consumables / Couplings
Origin	-
Model Number	GR38-XL-STAR
Coupling Type	Clamping Star-Shaped
Material	High-Grade Carbon Steel
Shaft Diameter	38mm
Max Torque Capacity	450 Nm
Operating Temperature	-30°C to +120°C
Surface Treatment	Black Oxide Finish
Application	Air Compressors, Industrial Pumps
Precision Grade	High Precision (H7)
Customization	Non-Standard Sizes Available

6 reviews

Anonymous

Mar 26, 2026

Rating: 5/5

Perfect fit for our compressor upgrade

We replaced our old coupling with this GR38 model and the difference in vibration damping is noticeable immediately. The clamping mechanism is robust and easy to install without needing special tools.

Anonymous

Mar 25, 2026

Rating: 5/5

High precision as advertised

Alignment was spot on. We are running this at high RPMs in a testing facility and it has held up perfectly for three months straight with no signs of wear or loosening.

Anonymous

Mar 19, 2026

Rating: 5/5

Reliable performance

This is our third purchase of this specific coupling type. They consistently perform well under continuous load. Highly recommend for anyone maintaining older compressor units.

Anonymous

Mar 14, 2026

Rating: 4/5

Solid build quality

The carbon steel feels very durable. Installation took about 20 minutes. I deducted one star only because the instruction manual was a bit vague on torque specifications, but standard engineering practices applied fine.

Anonymous

Mar 06, 2026

Rating: 4/5

Good value for money

Compared to other brands, this offers better pricing for the same specs. The finish is clean and there were no burrs on the edges. Shipping was faster than expected.

Anonymous

Mar 01, 2026

Rating: 5/5

Great for heavy duty applications

Bought this for a large industrial air compressor. The high torque capacity is exactly what we needed. The star-shaped design absorbs shocks well, protecting the motor shaft.

5 FAQ

Q: Is this compatible with stainless steel shafts?

A: Yes, the clamping mechanism works effectively on stainless steel shafts provided the shaft diameter matches the 38mm specification and the surface is clean.

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

A: Absolutely. The star-shaped spider is a separate component that can be replaced without removing the metal hubs from the shafts.

Q: What is the lead time for non-standard bore sizes?

A: Custom boring typically adds 5-7 business days to the standard shipping time. Please contact our sales team with your specific requirements before ordering.

Q: Does this coupling require lubrication during installation?

A: No, the GR38 clamping coupling is designed to be installed dry. Applying grease to the clamping surfaces may reduce the holding friction.

Q: Can this handle misalignment between shafts?

A: Yes, the star-shaped elastic element allows for small amounts of angular, parallel, and axial misalignment, though we recommend keeping alignment within 0.5mm for optimal lifespan.

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