Cam followers, also known as track followers, are specialized types of bearings designed to follow the contour of a cam track or profile. They are commonly used in various applications where linear motion or tracking motion is required, such as in cam mechanisms, conveyor systems, and industrial machinery.

To get the most out of cam followers, engineers should know the different variations and factors that affect performance and operational life.

Here are some key points about cam follower bearings:

• Construction: Cam followers consist of a stud or shaft, a roller, and a needle bearing or ball bearing housed within a thick outer ring. The outer ring has a crowned or cylindrical shape, allowing it to make contact with the cam track.
• Types: There are three types of cam followers: standard stud, heavy stud and yoke. Stud types are mounted cantilever-style in a support housing. Heavy stud versions are for heavy loads, shock loading and applications requiring minimal deflection. Except for the stud diameter and end plate design, standard and heavy stud versions are virtually identical.
• Cam Track: The cam track can have various shapes, such as circular, oval, or complex contours, depending on the application requirements. As the cam follower moves along the track, it experiences radial and axial loads.
• Load Capacity: Cam followers are designed to handle high radial loads and moderate axial loads. They are suitable for applications with intermittent or cyclical loading.
• Lubrication: Proper lubrication is crucial for the smooth operation and longevity of cam follower bearings. Lubrication also helps reduce friction and wear between the roller and the cam track.
• Sealing: Cam followers may come with seals or shields to protect the bearing from contaminants and retain lubrication.
• Cam Follower vs. Needle Roller Bearing: While cam followers are designed to follow a specific cam track, needle roller bearings are standard bearings that can handle radial loads but do not have the cam following capability.

When selecting a cam follower bearing for a particular application, it's essential to consider factors such as load requirements, speed, operating conditions, and environmental factors. Proper maintenance, including regular lubrication and inspection, will help ensure optimal performance and extend the life of cam follower bearings.