Housing unit that positions and retains a shaft-mounted bearing through a four-bolt flanged mounting, with a centring spigot allowing accurate alignment during installation. The cast iron housing carries an inner ring secured by grub screws, giving a bore diameter of 25.0 mm and an overall width of 27.0 mm. Net mass is 0.71 kg, and the basic dynamic load rating reaches 14900.0 N. The grub screw fixation in the inner ring provides a positive lock of the shaft, suited for applications where the shaft must not slip axially or rotationally within the bore. P seals protect the inner bearing from contamination, extending the interval between relubrication. The centring spigot on the flange face supports precise mounting alignment, which is relevant where housing position must be repeatable across installations.