A cam follower, also known as a track follower, is a specialized type of roller or needle bearing designed to follow cam lobe profiles. Cam followers come in a vast array of different configurations, however the most defining characteristic is how the cam follower mounts to its mating part; stud style cam followers use a stud while the yoke style has a hole through the middle. Specifications Roller diameter: 0.5000 in Thread size: 1/4-28 Roller width: 0.3750 in Radial dynamic load capacity: 680 lbs Stud diameter: 0.2500 in Radial static load capacity: 600 lbs Stud length: 0.6250 in Maximum rpm: 11500 rpm Roller shape: Flat Lubrication hole location: Stud Side Roller material: Chrome Steel Finish/coating: Black Oxide Bearing element: Needle Rollers Stud type: Heavy Stud Closure type: Sealed Head type: Hex