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, UKFC, UKPH, UKPAUKHA, UKFB, UKFA, UKC, UKPP, UKPF, UKPFLNA, NAP, NAF, NAFL, NAT, NAFC, NAPH, NAPANAHA, NAFB, NAFA, NAC, NAPP, NAPF, NAPFLSA, SAP, SAF, SAFL, SAT, SAFC, SAPH, SAPASAC, SALP, SALF, SAFD, SAPP, SAPF, SAPFLSB, SBP, SBF, SBFL, SBT, SBFC, SBPH, SBPA, SBC, SBLP, SBLF, SBFD, SBPP, SBPF, SBPFL