The Posidyne Clutch Brake, which can provide years of service with no adjustment and no maintenance required, is now available in a piggyback design for areas where an inline clutch brake is not suitable because of space constraints. The clutch brakes are designed to provide start/stop indexing for high-cycle, severe-duty applications in which high reliability is critical and downtime costly. Allowing the motor to run continuously provides high-cycle capability up to 300 cycles/min, improves efficiency, eliminates in-rush current, reduces cyclic inertia by not cycling the motor armature, and reduces maintenance costs. The basic Posidyne is designed as a foot-mounted clutch brake in an enclosed cast-iron housing with input and output shafts. The Posidyne 1.5 is a lightweight C-Face model with a quill input shaft and standard output shaft, and the Posidyne X Class is a value-engineered C-Face unit with quill input and standard output shaft. All consist of a clutch stack and brake made up of alternating friction discs connected to the output shaft, drive plates connected to the input shaft or housing, and a centrally located air or hydraulically actuated piston to exert pressure on either the clutch stack or brake stack.