The journal bearing friction apparatus is used to determine the coefficient of friction of different materials. Material bearing carrying assembly can be mounted on the shaft. The shaft can be balance with the hanger on one side and the rotating screw on the other side. While balancing the assembly the hanger has to be position at zero point of the scald arm. Then the upper arm is connected to the lower load carrying arm via circular aluminum wires.
Then the motor is started so that the frictional force can be applied to the scaled arm. The scaled arm can be balanced by moving the hanger on the either side or by changing the load in the hanger.