According to follower movement

The motions of the follower are distinguished from each other by dwells they have. A dwell is the zero displacement or the absence of motion of the follower during the motion of cam.

This type of cam is of three types: -

1. Rise-Return-Rise: - In this, there is alternate rise and return of the follower with no period for dwells. Its use is very limited in industries. It has linear angular displacement.

2. Dwell-Rise-Return-Dwell: - In such type of cam there is rise and return of the follower after a dwell. It is more efficient and more used than R-R-R cam.

3. Dwell-Rise-Dwell-Return-Dwell: - It is the most widely used type of cam. The dwelling of the cam is followed by rise and dwell and subsequently by return and dwell.