Cylindrical hole with square seat bearing (with stop screw) uses bearing UC2 (X, 3) series UCF2 (X, 3) ordinary product, L3 triple seal product, C, D (FC, FD) with steel plate cover or cast iron cover 1) Tapered holes (with fasteners) use bearings UK2 (X, 3) series UKF2 (X, 3) ordinary products, L3 triple seal products, C, D (FC, FD) with steel plate cover or cast iron cover 1) A seated bearing combined with a ball bearing for components and a bearing box with a square seat. Suitable for installation on vertical surfaces such as the side of the machine. When installing the bearing box to the machine body, use 4 bolts. Cylindrical hole (with stop screw) of the square seat bearing with boss uses bearing UC3 series UCFS3 ordinary product, L3 triple seal ring product, C, D tapered hole with cast iron cover (with fasteners) uses bearing UK3 series UKFS3 ordinary product, L3 triple-sealed product, C, D with cast iron cover. A block bearing is a combination of a component ball bearing and a bearing box with a square seat and a boss on the mounting surface. When installing the bearing box on the machine body, first insert the boss part into the mounting hole on the machine body, and then use 4 bolts. By inserting the boss portion into the mounting hole on the machine body, the bearing box can be installed in the correct position. Main applications: rotating drums, rotating rollers, applications requiring high installation accuracy, etc. Stainless steel series with boss square seat bearing cylindrical hole (with stop screw) uses bearing UC2S6 series UCSF2 H1S6C, D with stainless steel plate cover. Stainless steel is used for the material of the bearing and the bearing housing. It is a square seat bearing with a boss with excellent water resistance and corrosion resistance. Compared with the general UCF series, due to the thin-wall design, it is more conducive to miniaturization of the machine. When installing the bearing box to the machine body, use 4 bolts. Main uses: food machinery, agricultural machinery.