The TJ-POB clutch and brake assembly uses a pen design for power input and output.
 
The clutch rotor and the brake are attached to the same rotor to form an output shaft with input xia a bearing cam, When the clutch is energized, motion is transmitted to the input shaft. When power to the clutch is cut off teh output shaft and the bearing cam are seperated. When the brake is energized the output shaft stops turning.

 This unit is suitable for starting, stoping and positioning and for high frequency starts and holding.