JNS 8mm standard type cam follower with screwdriver slot head and crowned outer ring . 8mm stud diameter x 19mm outside diameter x 11mm width x M8X1.25 thread size. Equivalent to INA KR19, IKO CF8R, NTN KR19, McGill MCFR-19 . The Cam Followers is a highly rigid bearing, which consist of needle rollers between a shaft and a thick outer ring. The thick outer ring is capable of bearing both large radial load and impact load while keeping direct contact with the guiding surface