Image

Damping coupling

March 1, 2010
Arcusaflex® couplings from Ringfeder Power Transmission USA Corp., Westwood, N.J., are used on machines powered by diesel engines and strong pumps, which run less smoothly than electric motors

Arcusaflex® couplings from Ringfeder Power Transmission USA Corp., Westwood, N.J., are used on machines powered by diesel engines and strong pumps, which run less smoothly than electric motors. These soft couplings isolate driven systems from their less-than-steady power sources — particularly helpful where cardan shafts connect the two. Why? Cardan shafts allow shaft displacement and longer distances between driving and driven components, but their torsional flexibility can allow resonant excitation.

As explained by Sarah McChesney, chief engineer at Ringfeder, most isolators (including the Arcusaflex®) don't prevent vibration generation: “Instead, these devices dampen vibration and lower natural machine frequency to below lowest operating speed.” Of course, the other approach to lowering natural frequency is to add mass: “We've helped designers applying reciprocating compressors with tuning by both isolation and mass,” explains McChesney, “because these machines have terrible vibration. Often, a vibrating engine powers the compressor, which compounds the vibration issue with its own excitation. In fact, depending on system specifics, these compressors can only be applied successfully with both isolating couplings and increased mass.”

Ringfeder Corp.
(888) 746-4333
www.ringfeder.com

Sponsored Recommendations

June 27, 2025
Ensure workplace safety and compliance with our comprehensive Lockout/Tagout (LOTO) Safety Training course. Learn critical procedures to prevent serious injuries.
June 27, 2025
Join our expert webinar to discover essential safety control measures and best practices for engineering a truly safe and compliant industrial environment.
June 25, 2025
An innovative aircraft with electric drives combines the best of both worlds. The cross between drone and helicopter could mean significantly faster and more efficient air emergency...
June 25, 2025
Effective when other materials fail, ceramics are particularly suitable for applications requiring wear and chemical resistance, sliding characteristics or biocompatibility. Discover...

Voice your opinion!

To join the conversation, and become an exclusive member of Machine Design, create an account today!