Now more than ever, manufacturing companies are examining what steps need to be taken to ensure improvements to machine reliability by predicting system failures and minimizing downtime.

The complete product news section from the June 2009 issue of Power Transmission Engineering.

Much has been argued about the “buy American” clause included in the American Recovery and Reinvestment Act of 2009.

For many years bellows couplings have been near the top of the list of flexible coupling choices for high-performance motion systems. Their high torsional stiffness, low moment of inertia and minimal restoring forces under misalignment make them a preferred choice for maintaining tight control over the load.

Part I of this article appeared in the October 2008 issue. It provided an overview and general classifi cations of power transmission couplings, along with selection and performance criteria for rigid couplings and misalignment-compensating couplings. Part II continues the discussion with selection and performance criteria for torsionally flexible and combination-purpose couplings.

Power transmission couplings are widely used for modifi cation of stiff ness and damping in power transmission systems, both in torsion and in other directions (misalignment compensation).

KD-Rig Puts Accelerating Developments International in Limelight