Attributes

Brand	-
Category	Standard Parts, Components & Industrial Consumables / Couplings
Origin	-
Material	45# Steel / Stainless Steel
Coupling Type	Single/Double Diaphragm
Application	Servo Motor & Stepper Motor
Torque Range	High Precision Transmission
Misalignment Compensation	Angular, Parallel, and Axial
Surface Treatment	Black Oxide or Natural Finish
Operating Temperature	-20°C to +80°C
Backlash	Zero Backlash Design
Mounting Style	Clamp Screw Type
Compatibility	Standard NEMA Motor Flanges

6 reviews

Anonymous

Mar 31, 2026

Rating: 5/5

Perfect for my CNC retrofit

These couplings fit perfectly on my servo motors. The build quality is solid, and there is absolutely no play in the connection. Highly recommended for precision machinery.

Anonymous

Mar 26, 2026

Rating: 5/5

Robust construction

Very heavy-duty feeling despite being flexible. The 45 steel material feels premium. It handles the torque of my 750W motor without any issues.

Anonymous

Mar 18, 2026

Rating: 5/5

Great for robotics projects

Used these for a custom robotic arm joint. The zero backlash is critical for my application, and these deliver. Very satisfied with the precision.

Anonymous

Mar 16, 2026

Rating: 5/5

Excellent vibration damping

I replaced my old rigid couplers with these double diaphragm ones, and the vibration noise has decreased significantly. My machine runs much smoother now.

Anonymous

Mar 04, 2026

Rating: 4/5

Works as described

Does exactly what it is supposed to do. The alignment tolerance is forgiving which made installation easier than expected. Would buy again.

Anonymous

Mar 03, 2026

Rating: 4/5

Good value, fast shipping

The stainless steel finish looks great and seems durable. Installation was straightforward with the clamp screws. One screw was slightly tight, but overall a good purchase.

5 FAQ

Q: Do I need to lubricate the diaphragm?

A: No, the metal diaphragm design is maintenance-free and does not require any lubrication during its operational life.

Q: What is the maximum RPM these couplings can handle?

A: These couplings are designed for high-speed applications and can typically handle up to 10,000 RPM depending on the specific bore size and balance.

Q: Are the set screws included in the package?

A: Yes, all necessary clamp screws and Allen keys required for installation are included with each coupling unit.

Q: Can this accommodate a 10mm to 14mm shaft connection?

A: We offer various bore combinations. Please check the specific SKU selection menu to choose the 10mm-14mm configuration, as they are made to order for specific sizes.

Q: Is the stainless steel version more corrosion resistant than the 45 steel?

A: Yes, the stainless steel (SJM/ZJM) models offer superior corrosion resistance and are recommended for humid or harsh environments compared to the standard 45 steel.

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