This bearing housing accommodates axial adjustment along a rail, allowing the unit to be repositioned for belt or chain tensioning. The cast iron housing carries a radial insert ball bearing with a 25.0 mm bore, secured to the shaft by grub screws in the inner ring. Overall height is 89.0 mm, net mass 0.846 kg, and the basic dynamic load rating is 14900.0 N. RSR seals on both sides of the insert bearing keep out dust and moisture while retaining grease within the bearing. The grub screw fixation permits quick mounting and removal without press fits, and the take-up design supports sliding adjustment within the housing slots for setting tension. This configuration suits applications where periodic repositioning of the shaft along its axis is required, with lubrication maintained through the sealed insert bearing.