The Kop-Flex MAX-C WB hybrid coupling is a new solution for managing torsional vibration in high-performance drivetrains powered by synchronous motors, variable-frequency drives and diesel engines, or those driving reciprocating machinery or handling shock loads. Developed by the Kop-Flex unit of Emerson's Power Transmission Solutions business, the design combines a maintenance-free, non-lubricated MAX-C resilient coupling half with a lightweight diaphragm, disc or high-performance gear coupling half, depending on the application. The hybrid design matches the advantages of a low-cost, lightweight flexible coupling half for the driven shaft, with the vibration-damping of a MAX-C coupling half on the motor end. The maintenance-free MAX-C dampens high drivetrain torque loads, while the overall hybrid design reduces weight, cost and inertia, eliminating the need for oversized and costlier drivetrain components. Various designs of the engineered hybrid coupling are capable of transmitting up to 56,000,000 lb-in (6383 kN-m) torque. The MAX-C WB is ideal for use in drivetrains for ID/FD fans, torque converters, marine gears, drill rigs, crushers, kiln drives, mill pinions, ship thrusters, centrifugal compressors and feed rolls.