A long-time Torsion Control Products customer faced a heavy challenge while producing one of the largest mining vehicles in the world: a 400-ton, gear-driven haul truck. The truck required 3000-plus horsepower. To achieve this, it used a 12-cylinder engine bolted to a TCP coupling that was connected to the crank nose of another 12-cylinder engine. However, under these extreme operating conditions, the standard coupling design only lasted 250 hours.
“In mining equipment as well as in construction machines, agricultural vehicles etc., couplings need to cope with ever more unusual installation spaces,” says Dr. Peter Jaschke, Business Development Manager for TCP. “The couplings must be adaptable to all possible conditions, such as narrow spaces in which heat accumulates and cannot dissipate due to the seals. Or they must be able to bridge large distances to other drivetrain components that cannot be installed near the coupling or engine.”
With their unique torsional characteristics, TCP spring couplings are especially suited to modern diesel engines that produce lower emissions and more power in smaller packages at lower operating speeds. They run reliably and attenuate drivetrain vibration even in the roughest of applications. With their Smart Damping system, the spring couplings can be tuned to supply damping only when needed and to isolate resonance when damping is detrimental. This reduces torsional spikes at startup, shutdown and transient events, which increases the coupling’s lifespan.