THK Co., Ltd. CFN 8R-A Cam Follower Stud Type

The THK CFN 8R-A Cam Follower is a stud-type cam follower bearing with integrated thrust ball bearings, designed to support radial loads while reducing friction and wear caused by incidental thrust loads. It belongs to the CFN-R-A series and features a spherical outer ring for improved alignment and a hexagon socket stud-head configuration for convenient installation. Key specs include an 8 mm stud diameter with M8×1.25 thread, outer diameter 19 mm, outer ring width 11 mm, inner width 12 mm, overall length 32 mm, thread length 10 mm, and ratings of 4.17 kN dynamic and 4.65 kN static; lubrication is grease-lubricated with an optional dedicated grease nipple available, and the bearing is made from high-carbon bearing steel. Common applications include packaging equipment, industrial automation systems, machine tools, material handling equipment, indexing mechanisms, and other cam mechanisms, guide rollers, conveyors, and automated machinery, where the integrated thrust bearings help prevent wear on the stud shoulder under axial thrust loads.