Types of Universal Joints

Ball and Trunnion Universal Joint:


• It consists of ball head fastened to the end of propeller shaft through which a pin is pressed

• Two steel balls fit over the ends of the pin

• The ball retain the roller bearing between them and U shaped channel in the body

• The centering bottoms and the bottom spring helps to properly center the pin 

• The universal joints and propeller shaft assembly is bolted to a companion flange with the 

  gasket and grease cover between them

• The rotary motion is carried out through the pin and balls 

• The balls can move back and forth in the channel of the body to compensate for varying 

  angle of drive

• The balls act as slip joints by slipping into or out of the channels