Attributes

Brand	-
Category	Standard Parts, Components & Industrial Consumables / Couplings
Origin	-
Material	Cast Iron Hub, Nylon Sleeve, 45# Steel Gear
Type	Internal Gear Flexible Coupling
Model Series	NL1 through NL9
Application	Motor to Oil Pump Shaft Connection
Flexibility	High torsional flexibility with vibration damping
Max Torque Range	Varies by model (NL1: Low torque to NL9: High torque)
Operating Temperature	-20°C to +80°C (Nylon dependent)
Misalignment Compensation	Angular, Parallel, and Axial
Surface Treatment	Black Oxide or Phosphating on Metal Parts
Maintenance	Lubrication-free operation for nylon sleeve models

6 reviews

Anonymous

Mar 31, 2026

Rating: 5/5

Great replacement part

Needed a specific size for an older pump model. The NL series covered our needs perfectly. The flexible nature helps protect the motor bearings from shock loads.

Anonymous

Mar 29, 2026

Rating: 5/5

Perfect fit for our hydraulic pumps

We ordered the NL5 series for connecting our electric motors to oil pumps. The fit was precise, and the nylon sleeve absorbed the vibration perfectly. Installation was straightforward.

Anonymous

Mar 20, 2026

Rating: 4/5

Good quality, fast shipping

The cast iron hubs feel very robust. I deducted one star only because the documentation was a bit sparse, but the product itself works exactly as described for our machinery.

Anonymous

Mar 19, 2026

Rating: 4/5

Solid industrial component

Does exactly what it is supposed to do. The 45# steel gears engage smoothly. Just make sure you order the correct bore size for your shaft.

Anonymous

Mar 12, 2026

Rating: 5/5

Durable and reliable

Been running these couplings for six months now in a high-cycle environment. No signs of wear on the nylon sleeve yet. Great value for the price.

Anonymous

Mar 08, 2026

Rating: 5/5

Excellent vibration damping

Replaced an old rigid coupling with this NL3 flexible type. The noise level in the workshop dropped significantly. Highly recommend for any motor-pump setup.

5 FAQ

Q: What is the maximum misalignment this can handle?

A: Generally, the NL series can compensate for angular misalignment up to 1 degree, parallel misalignment up to 0.5mm, and axial displacement depending on the specific model number (NL1-NL9).

Q: Can I use this in an outdoor environment?

A: Yes, the cast iron and steel components are treated for corrosion resistance. However, prolonged exposure to direct UV sunlight may degrade the nylon sleeve over time; we recommend a protective cover for long-term outdoor use.

Q: Does this coupling require regular lubrication?

A: The nylon sleeve versions are designed to be maintenance-free and do not require lubrication. However, if you have a specific grease-lubricated gear variant, please check the specific model datasheet.

Q: Are custom bore sizes available?

A: Standard models come with common bore sizes. For non-standard bores or keyway specifications, please contact our sales team directly for customization options.

Q: What happens if the nylon sleeve wears out?

A: The nylon sleeve is a replaceable wear part. You do not need to replace the entire coupling; simply order a replacement sleeve compatible with your NL model number.

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