Which Coupling Is Best for Compressor Drive Applications?

Compressor drives present coupling specification challenges that go beyond the standard pump or fan application. The torque character of the driven load — smooth for centrifugal and screw types, highly pulsating for reciprocating types — creates torsional excitation...

Is Shaft Alignment Necessary Before Installing a Coupling?

Shaft alignment before coupling installation is not a recommendation — it is a mechanical necessity for any motor-driven drivetrain that is expected to achieve rated service life. The question of whether alignment is necessary has the same answer regardless of...

What Is a Snake Spring Coupling and When Is It Used?

The snake spring coupling — also known as a grid coupling or spring grid coupling — is a coupling type that has been in continuous industrial use for over a century, and for good reason. Its sinusoidal steel spring element provides a combination of shock absorption,...

How to Specify a Coupling for OEM Equipment

Specifying a shaft coupling for OEM equipment involves a set of considerations that differ from maintenance replacement or one-off project coupling selection. The OEM engineer must select a coupling that is correctly rated for the product’s full operating range,...

Can a Flexible Coupling Reduce Vibration in Existing Plant?

Reducing vibration in existing rotating machinery is one of the most common challenges in industrial maintenance engineering — and one where the correct coupling change, combined with shaft alignment, consistently delivers measurable results without major plant...