These units consist of a double-sealed single row deep groove bearing, and cast iron(or other material) housing in various configurations.Models: UC, UCP, UCF, UCFL, UCT, UCFC, UCPH, UCPAUCHA, UCFB, UCFA, UCC, UCPP, UCPF, UCPFLUK, UKP, UKF, UKFL, UKT