FYH with square block bearing cylindrical hole (with set screw)...use bearing UC2 (X, 3) series UCF2 (X, 3) normal product, L3 triple seal product, C, D (FC, FD) with steel cover or Cast iron cover 1) Tapered hole (with fasteners)...use bearing UK2 (X, 3) series UKF2 (X, 3) normal product, L3 triple seal product, C, D (FC, FD) with steel plate cover or cast iron Cover 1) Bearing with block which is composed of ball bearing for assembly and bearing housing with square seat. It is suitable for installation on vertical surfaces such as machine sides. When installing the bearing housing to the machine body, use 4 bolts. FYH square housing bearing with boss cylindrical hole (with set screw)…use bearing UC3 series UCFS3 normal product, L3 triple seal product, C, D with cast iron cover tapered hole (with fastener)…use bearing UK3 series UKFS3 Ordinary product, L3 triple seal product, C, D with cast iron cover. It is a bearing with a block composed of a ball bearing for assembly and a bearing box with a square seat and a boss on the mounting surface. When installing the bearing housing on the machine body, first insert the boss into the mounting hole on the machine body, and then use 4 bolts. The bearing housing can be mounted in the correct position by fitting the boss into the mounting hole on the machine body. Main applications: Rotating drums, rotating rollers, applications requiring high installation accuracy, etc. FYH stainless steel series bearing cylindrical hole with boss square seat (with set screw) ...... Use bearing UC2S6 series UCSF2 H1S6C, D with stainless steel plate cover. The material of the bearing and bearing housing is stainless steel, which is a square block bearing with a boss with excellent water resistance and corrosion resistance. Compared with the general UCF series, it is more conducive to miniaturization of the machine due to the thin-walled design. When installing the bearing housing to the machine body, use 4 bolts. Main use: food machinery, agricultural machinery.