JNS 20mm standard type cam follower with hex socket on both ends and cylindrical outer ring . 20mm stud diameter x 52mm outside diameter x 24mm width x M20X1.5 thread size. Equivalent to INA KR52X. 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